Owners Manual

ManualsBrandsDell ManualsComputer HardwarePowerVault MD3200

Dell PowerVault MD3200

and MD3220 Storage Arrays

Owner’s Manual

Regulatory Model: E03J Series and E04J Series

Regulatory Type: E03J001 and E04J001

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Summary of content (272 pages)

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book.book Page 2 Tuesday, June 18, 2013 2:53 PM Notes, Cautions, and Warnings NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. ____________________ © 2013 Dell Inc.
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book.book Page 3 Tuesday, June 18, 2013 2:53 PM Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . About This Document . . . . . . . . . . . . . . . . . . Inside the box of the Dell PowerVault MD3200 Series Storage Array. . . . . . . . . . . . . . . 20 . . . . . . . . . . . 20 . . . . . . . . . . . . . 20 Other Information you May Need 2 . . . . . . . . . . . . Planning: About Your Storage Array . Overview . 20 . . . 23 . . . . . . . . . . . . . . . . . . . . . . . .
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book.book Page 4 Tuesday, June 18, 2013 2:53 PM RAID Controller Module Connectors and Features . . . . . . . . . . . . . . . . . . . . . . . RAID Controller Module—Additional Features . Battery Backup Unit . . . . 34 . . . . . . . . . . . . . . . . 34 Storage Array Thermal Shutdown System Password Reset . . . . . . . . . 35 . . . . . . . . . . . . . . 35 . . . . . . . . . . . . . 36 . . . . . . . . . . . . . . . . . . 36 Cache Functions and Features . Cache Mirroring. Write-Back Cache . .
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book.book Page 5 Tuesday, June 18, 2013 2:53 PM Cycle Time . . . . . . . . . . . . . . . . . . . . . Virtual Disk Operations Limit Disk Group Operations. 44 . . . . . . . . . . . . 45 . . . . . . . . . . . . . . . . . 45 RAID Level Migration . . . . . . . . . . . . . . . . Segment Size Migration . . . . . . . . . . . . . . Virtual Disk Capacity Expansion Disk Group Expansion 45 45 . . . . . . . . . . 46 . . . . . . . . . . . . . . . 46 . . . . . . . . . . . 47 . . . . . . . . . . . .
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book.book Page 6 Tuesday, June 18, 2013 2:53 PM 5 Configuration: Overview User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Array Management Window . . . . . . . . . . . . 63 Configuration: About Your Storage Array . . . . . . . . . . . . . . . . . . . . . 65 Out-of-Band and In-Band Management . Storage Arrays . . . . . . . . 65 . . . . . . . . . . . . . . . . . . . . . . 66 Adding Storage Arrays . . . . . . . . . . . . . . .
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book.book Page 7 Tuesday, June 18, 2013 2:53 PM Setting the Storage Array RAID Controller Module Clocks . . . . . . . . . . . . . . . 7 Configuration: Event Monitor . . . . 82 . . . . . . . . . 83 Enabling or Disabling the Event Monitor . . . . . . . . 84 . . . . . . . . . . . . . . . . . . . . . . 84 . . . . . . . . . . . . . . . . . . . . . . . . 84 Windows Linux 8 Configuration: About Your Host . . . . . . . . 85 Configuring Host Access . . . . . . . . . . . . . . . .
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book.book Page 8 Tuesday, June 18, 2013 2:53 PM Creating Disk Groups . . . . . . . . . . . . . . . . Locating a Disk Group . . . . . . . . . . . . . . . 98 Creating Virtual Disks . . . . . . . . . . . . . . . . 98 Changing the Virtual Disk Modification Priority . . . . . . . . . . . . . . . Changing the Virtual Disk Cache Settings Changing the I/O Type. 101 . . . . . . . . . . 103 . . . . . . . . . . . . . . 104 Choosing an Appropriate Physical Disk Type .
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book.book Page 9 Tuesday, June 18, 2013 2:53 PM Changing the RAID Controller Module Ownership of a Disk Group . . . . . . . Changing the RAID Level of a Disk Group . . . . 124 . . . . . . . . . . . . . . . . . . 126 Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group . . . . 127 . . . . . . . 129 . . . . . . . . . . . . . . . . . . 130 Changing the RAID Level of a Disk Group . Storage Partitioning . 124 . . . . .
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book.book Page 10 Tuesday, June 18, 2013 2:53 PM Common Reasons for Scheduling a Snapshot Virtual Disk . . . . . . . . Guidelines for Creating Snapshot Schedules . . . . . . . . 140 . . . . . . . . . . . . . . 141 Enabling and Disabling Snapshot Schedules . . . . . . . . . . . . . . . . . . . . . Creating a Snapshot Virtual Disk Using the Simple Path . . . . . . . . . . . . . About the Simple Path . . . . . . . 142 . . . . . . . . . . . . . .
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book.book Page 11 Tuesday, June 18, 2013 2:53 PM Resuming a Snapshot Rollback . . . . . . . . . . 160 Canceling a Snapshot Rollback . . . . . . . . . . 161 11 Configuration: Premium Feature— Virtual Disk Copy . . . . . . . . . . . . . . Types of Virtual Disk Copies . . . . . 163 . . . . . . . . . . . . . . 164 Offline Copy . . . . . . . . . . . . . . . . . . . . . 164 Online Copy . . . . . . . . . . . . . . . . . . . . . 165 Creating a Virtual Disk Copy for an MSCS Shared Disk . . . . . .
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book.book Page 12 Tuesday, June 18, 2013 2:53 PM Recopying a Virtual Disk . . . . . . . . . . . . . . . . Preparing Host Servers to Recopy a Virtual Disk . . . . . . . . . . . . . . . 174 Re-Copying a Virtual Disk . . . . . . . . . . . . . 175 . . . . . . . . . . . . . . . . . 176 Removing Copy Pairs. 12 Configuration: Premium Feature— Upgrading to HighPerformance-Tier . . . . . . . . . . . . . . . . . 177 . . . . . . . 179 . . . . . . . . . . . . . . . . . . . . . . .
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book.book Page 13 Tuesday, June 18, 2013 2:53 PM Downloading Physical Disk Firmware Downloading MD1200 Series Expansion Module EMM Firmware . . . . . . . . . . . . . . . . . . . . . 197 . . . . . . . . 198 . . . . . . . . . 198 Self-Monitoring Analysis and Reporting Technology (SMART) . . . . . . . . . . Media Errors and Unreadable Sectors 195 . . . . . . . . . 15 Management: Installing Array Components . . . . . . . . . . . . . . . . . . . . . 201 Recommended Tools . . . . . . . . . . . . .
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book.book Page 14 Tuesday, June 18, 2013 2:53 PM RAID Controller Module Backup Battery Unit . . . . . 214 . . . . . 214 . . . . . . 215 . . . . . . . . . . 216 Removing the RAID Controller Module Backup Battery Unit . . . . . . . . . . Installing the RAID Controller Module Backup Battery Unit . . . . . . . . . Power Supply/Cooling Fan Module Removing a Power Supply/Cooling Fan Module . . . . . . . . . . . . . . . . . . . . 216 . . . . . . . . 217 . . . . . . . . . . . . . . . . . . . . .
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book.book Page 15 Tuesday, June 18, 2013 2:53 PM Device Health Conditions . . . . . . . . . . . . . . . . Storage Array Support Data . . . . . . . . . . . . . . . 232 . . . . 233 . . . . . . . . . . . 234 . . . . . . . . . . . . . . . . . . . . . . . . 234 Automatically Collect the Support Bundle Data Collecting the Physical Disk Data . Event Log . 229 Recovery Guru . . . . . . . . . . . . . . . . . . . . . . Storage Array Profile . . . . . . . . . . . . . . . . . .
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book.book Page 16 Tuesday, June 18, 2013 2:53 PM 19 Troubleshooting: Your Array . . . . . . . . . 253 Safety First—For you and Your Array . . . . . . . . . 253 . . . 253 . . . . . . . 253 . . . . . . . . 253 Troubleshooting Storage Array Startup Failure . Troubleshooting Loss of Communication Troubleshooting External Connections Troubleshooting Power Supply/Cooling Fan Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 . . . . . . . .
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book.book Page 17 Tuesday, June 18, 2013 2:53 PM 20 Getting Help . . . . . . . . . . . . . . . . . . . . . . Locating Your System Service Tag Contacting Dell . . . . . . . . . . . 265 . . . . . . . . . . . . . . . . . . . . . 265 Documentation Feedback Index 265 266 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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book.book Page 19 Tuesday, June 18, 2013 2:53 PM 1 Introduction NOTE: Unless specified, MD3200 Series represents Dell PowerVault MD3200 and Dell PowerVault MD3220 Storage Arrays. WARNING: See the Safety, Environmental, and Regulatory Information document for important safety information before following any procedures listed in this document. About This Document This guide familiarizes you with the functions of the Dell PowerVault MD3200 Series storage array.
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book.book Page 21 Tuesday, June 18, 2013 2:53 PM • The Getting Started Guide provides an overview of setting up and cabling your storage array. • The Deployment Guide provides installation and configuration instructions for both software and hardware. • The Storage Manager CLI Guide provides information about using the command line interface (CLI). • Resource media contains all system management tools.
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book.book Page 23 Tuesday, June 18, 2013 2:53 PM 2 Planning: About Your Storage Array Overview The MD3200 Series storage array is designed for high availability, offering redundant access to data storage. It features support for both single and dual RAID controller configuration. The Dell PowerVault MD3200 Series storage array provides 6.0-Gbps SAS connectivity to the host server and enables access for up to eight nonredundant servers or four redundant servers.
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book.book Page 24 Tuesday, June 18, 2013 2:53 PM Hardware Features Front-Panel Features and Indicators Figure 2-1. Front-Panel Features and Indicators—Dell PowerVault MD3200 1 2 3 4 5 6 Figure 2-2.
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book.book Page 25 Tuesday, June 18, 2013 2:53 PM Figure 2-3. Front-Bezel Features and Indicators 1 2 3 Item Indicator, Button, or Connector 1 Enclosure status LED Icon Description The enclosure status LED lights when the enclosure power is on. Lights blue during normal operation. Blinks blue when a host server is identifying the enclosure or when the system identification button is pressed. Lights amber as enclosure boots or is reset.
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book.book Page 26 Tuesday, June 18, 2013 2:53 PM Item Indicator, Button, or Connector Icon Description 3 Split mode LED This LED must be unlit as the split mode function is not supported by the MD3200 Series Storage Arrays. 4 System identification button The system identification button on the front control panel can be used to locate a particular enclosure within a rack.
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book.book Page 27 Tuesday, June 18, 2013 2:53 PM Back Panel Features and Indicators Figure 2-4.
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book.book Page 28 Tuesday, June 18, 2013 2:53 PM Hard-Drive Indicator Patterns Figure 2-5.
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book.book Page 29 Tuesday, June 18, 2013 2:53 PM Drive-Status Indicator Pattern Condition Off The physical disk is: • not yet discovered by the host server • is spun down for removal • not supported for the RAID controller module or is not in the physical disk slot NOTE: The drive status indicator remains off until all hard drives are initialized after system power is turned on. Drives are not ready for insertion or removal during this time.
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book.book Page 30 Tuesday, June 18, 2013 2:53 PM Power Indicator Codes and Features Figure 2-6. Power Indicator Codes and Feature 1 2 3 4 5 Item LED Type 1 DC power Icon Description The LED lights green when the DC output voltage is within the limit. If this LED is off, it indicates that the DC output voltage are not within the limit. 2 Power supply/cooling fan fault The LED lights amber when the DC output voltage is not within the limit or a fault with the fan is detected.
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book.book Page 31 Tuesday, June 18, 2013 2:53 PM 3 Planning: RAID Controller Modules RAID Controller Modules The RAID controller modules provide high-performance, advanced virtual disk configuration, and fault-tolerant disk subsystem management. Each RAID controller module contains 2 GB or 4 GB of mirrored cache for high availability and is protected by a battery powered cache offload mechanism. NOTE: The 4 GB mirrored cache is an optional feature.
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book.book Page 32 Tuesday, June 18, 2013 2:53 PM RAID Controller Module Connectors and Features Figure 3-1. MD3200 Series SAS RAID Controller Module 1 8 2 9 3 10 11 4 5 12 13 14 15 16 17 6 18 19 7 20 21 Item Component Function 1 SAS OUT port Provides SAS connection for cabling to a downchain expansion enclosure. 2 SAS IN port 0 Provides host-to-controller SAS connection. 3 SAS IN port 1 Provides host-to-controller SAS connection.
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book.book Page 33 Tuesday, June 18, 2013 2:53 PM Item Component Function 9 Controller power Lights green when controller power is on. LED Off when controller is not powered. 10 SAS IN 0 port link/fault LED Lights green when all four links are connected. Lights amber when one to 3 links are disconnected. Off when all links in the port are disconnected or cable is disconnected. 11 Controller fault LED Lights amber when controller fault detected.
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book.book Page 34 Tuesday, June 18, 2013 2:53 PM Item Component Function 18 SAS IN 3 port link/fault LED Lights green when all four links are connected. Lights amber when one to 3 links are disconnected. Off when all links in the port are disconnected or cable is disconnected. 19 Management port speed LED Lights green when ethernet connection is operating at 1000 Mbps. Lights amber when ethernet connection is operating at 100 Mbps.
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book.book Page 35 Tuesday, June 18, 2013 2:53 PM Storage Array Thermal Shutdown The system automatically shuts down when system temperature exceeds the safe threshold. The battery backup unit protects against data loss by providing power to offload cache to non-volatile memory in the event of power loss. It is not necessary to shut down any MD1200 Series expansion enclosures attached to the storage array when thermal shutdown occurs.
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book.book Page 36 Tuesday, June 18, 2013 2:53 PM Cache Functions and Features Cache Mirroring Cache mirroring function copies accepted host-write data from the primary controller to the partner controller. This action ensures that host-write data is safely mirrored to the partner controller before successful completion status is returned to the host. If a controller fails, the surviving controller safely retains all mirrored data. Cache mirroring is enabled by default.
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book.book Page 37 Tuesday, June 18, 2013 2:53 PM 4 Planning: MD3200 Series Storage Array Terms and Concepts This chapter explains the terms and concepts used for configuration and operation of the MD3200 Series storage arrays. Physical Disks, Virtual Disks, and Disk Groups Physical disks in your storage array provide the physical storage capacity for your data.
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book.book Page 38 Tuesday, June 18, 2013 2:53 PM Physical Disks Only Dell supported 6.0-Gbps SAS physical disks are supported in the storage array. If the storage array detects unsupported physical disks, it marks the disk as unsupported and the physical disk becomes unavailable for all operations. NOTE: The MD3200 Series storage array must contain at least two physical disks for proper operation. This is necessary because the physical disks are used to store configuration information.
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book.book Page 39 Tuesday, June 18, 2013 2:53 PM Table 4-1. RAID Controller Physical Disk States (continued) Status Mode Description Physical Disk Status LED Pending Failure Assigned, Unassigned, Hot Spare in use, or Hot Spare standby A Self-Monitoring Analysis and Reporting Technology (SMART) error is detected on the physical disk in the indicated slot.
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book.book Page 40 Tuesday, June 18, 2013 2:53 PM 3 Provide host server access. 4 Create mappings to associate the virtual disks with the host servers. NOTE: Host server access must be created before mapping virtual disks. Disk groups are always created in the unconfigured capacity of a storage array. Unconfigured capacity is the available physical disk space not already assigned in the storage array. Virtual disks are created within the free capacity of a disk group.
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book.book Page 41 Tuesday, June 18, 2013 2:53 PM Using multiple physical disks has the following advantages over using a single physical disk: • Placing data on multiple physical disks (striping) allows input/output (I/O) operations to occur simultaneously and improve performance. • Storing redundant data on multiple physical disks using mirroring or parity supports reconstruction of lost data if an error occurs, even if that error is the failure of a physical disk.
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book.book Page 42 Tuesday, June 18, 2013 2:53 PM RAID 1 RAID 1 uses disk mirroring so that data written to one physical disk is simultaneously written to another physical disk. This RAID level offers fast performance, the best data availability, and the highest disk overhead. RAID 1 is recommended for small databases or other applications that do not require large capacity. RAID 1 provides full data redundancy. For example accounting, payroll, or financial applications.
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book.book Page 43 Tuesday, June 18, 2013 2:53 PM Segment Size Disk striping enables data to be written across multiple physical disks. Disk striping enhances performance because striped disks are accessed simultaneously. The segment size or stripe element size specifies the size of data in a stripe written to a single disk. The MD3200 Series array supports stripe element sizes of 8 KB, 16 KB, 32 KB, 64 KB, 128 KB, 256 KB, and 512 KB. The default stripe element size is 128 KB.
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book.book Page 44 Tuesday, June 18, 2013 2:53 PM Consistency Check A consistency check verifies the correctness of data in a redundant array (RAID levels 1, 5, 6, and 10). For example, in a system with parity, checking consistency involves computing the data on one physical disk and comparing the results to the contents of the parity physical disk. A consistency check is similar to a background initialization.
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book.book Page 45 Tuesday, June 18, 2013 2:53 PM Virtual Disk Operations Limit The maximum number of active, concurrent virtual disk processes per RAID controller module installed in the storage array is four.
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book.book Page 46 Tuesday, June 18, 2013 2:53 PM Dynamic segment size migration enables the segment size of a given virtual disk to be changed. A default segment size is set when the virtual disk is created, based on such factors as the RAID level and expected usage. You can change the default value (128 KB) if segment size usage does not match your needs.
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book.book Page 47 Tuesday, June 18, 2013 2:53 PM Disk Group Defragmentation Defragmenting consolidates the free capacity in the disk group into one contiguous area. Defragmentation does not change the way in which the data is stored on the virtual disks. Disk Group Operations Limit The maximum number of active, concurrent disk group processes per installed RAID controller module is one.
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book.book Page 48 Tuesday, June 18, 2013 2:53 PM • Segment size migration • Disk group expansion • Disk group defragmentation The priority of each of these operations can be changed to address performance requirements of the environment in which the operations are to be executed. NOTE: Setting a high priority level impacts storage array performance. It is not advisable to set priority levels at the maximum level.
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book.book Page 49 Tuesday, June 18, 2013 2:53 PM the MD3200 Series storage array does not recognize the migrating metadata and that data is lost. In this case, the MD3200 Series storage array initializes the physical disks and marks them as unconfigured capacity. NOTE: Only disk groups and associated virtual disks with all member physical disks present can be migrated from one storage array to another.
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book.book Page 50 Tuesday, June 18, 2013 2:53 PM • Migrating virtual disks to a storage array with no existing physical disks— Turn off the destination storage array, when migrating disk groups or a complete set of physical disks from a storage array to another storage array that has no existing physical disks. After the destination storage array is turned on and has successfully recognized the newly migrated physical disks, migration operations can continue.
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book.book Page 51 Tuesday, June 18, 2013 2:53 PM Host Server-to-Virtual Disk Mapping The host server attached to a storage array accesses various virtual disks on the storage array through its host ports. Specific virtual disk-to-LUN mappings to an individual host server can be defined. In addition, the host server can be part of a host group that shares access to one or more virtual disks. You can manually configure a host server-to-virtual disk mapping.
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book.book Page 52 Tuesday, June 18, 2013 2:53 PM online and user-accessible. When the backup is completed, the snapshot virtual disk is no longer needed. You can create up to four snapshots per virtual disk. Snapshots are used to recover previous versions of files that have changed since the snapshot was taken. Snapshots are implemented using a copy-onwrite algorithm, which makes a backup copy of data the instant an error occurs.
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book.book Page 53 Tuesday, June 18, 2013 2:53 PM Virtual Disk Copy Virtual disk copy is a premium feature to: • Back up data • Copy data from disk groups that use smaller-capacity physical disks to disk groups using greater capacity physical disks • Restore snapshot virtual disk data to the source virtual disk. Virtual disk copy generates a full copy of data from the source virtual disk to the target virtual disk in a storage array and can be performed either online or offline.
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book.book Page 54 Tuesday, June 18, 2013 2:53 PM Virtual Disk Recovery You can use the Edit host server-to-virtual disk mappings feature to recover data from the backup virtual disk. This functionality enables you to unmap the original source virtual disk from its host server, then map the backup virtual disk to the same host server. Ensure that you record the LUN used to provide access to the source virtual disk.
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book.book Page 55 Tuesday, June 18, 2013 2:53 PM The multi-path software identifies the existence of multiple paths to a virtual disk and establishes a preferred path to that disk. If any component in the preferred path fails, the multi-path software automatically re-routes I/O requests to the alternate path so that the storage array continues to operate without interruption. NOTE: Multi-path software available on the MD3200 Series resource media.
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book.book Page 56 Tuesday, June 18, 2013 2:53 PM Ownership can later be modified to balance workload according to actual usage. If virtual disk ownership is not manually balanced, it is possible for one controller to have the majority of the work, while the other controller is idle. Limit the number of virtual disks in a disk group. If multiple virtual disks are in a disk group, consider: • The impact each virtual disk has on other virtual disks in the same disk group.
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book.book Page 57 Tuesday, June 18, 2013 2:53 PM • Least path weight with subset (Windows operating systems only)—The least queue depth with subset policy is also known as the least I/Os or least requests policy. This policy routes the next I/O request to a data path that has the least outstanding I/O requests queued. For this policy, an I/O request is simply a command in the queue. The type of command or the number of blocks that are associated with the command are not considered.
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book.book Page 58 Tuesday, June 18, 2013 2:53 PM 4 Click Settings. a Select the items that you want to monitor. You can monitor: • RAID controller modules • Virtual disks • Storage array totals NOTE: By default, all items are selected. b In Polling interval, select how often you want to update the performance statistics. NOTE: For an accurate elapsed time, do not use the Set RAID Controller Module Clocks option while using the Performance Monitor.
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book.book Page 59 Tuesday, June 18, 2013 2:53 PM 12 Click Save. The Performance Monitor data provides information about how your storage array is performing. The data is presented in eight columns, which are described in this table. Use this data to make performance tuning decisions for your storage array. Table 4-3. Performance Monitor Table Description Column Headings Description Devices Controller, virtual disk or storage array total. Total IOs Cumulative IO’s per second from last start time.
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book.book Page 61 Tuesday, June 18, 2013 2:53 PM Configuration: Overview 5 Dell PowerVault Modular Disk Storage Manager (MDSM) online help contains information on the how to use the MDSM application to perform the configuration and management tasks described in this document. You can access online help by selecting Help located at the top right corner of MDSM interface. For information on installing the MDSM, see the MD3200 and MD3220 Storage Array’s Deployment Guide at dell.com/support/manuals.
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book.book Page 62 Tuesday, June 18, 2013 2:53 PM Enterprise Management Window The EMW provides high-level management of storage arrays. When you start MDSM, the EMW is displayed. The EMW has these tabs: • Devices tab—Provides information about the storage arrays. • Setup tab—Presents the initial setup tasks that guide you through adding storage arrays and configuring alerts.
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book.book Page 63 Tuesday, June 18, 2013 2:53 PM Inheriting the System Settings Use the Inherit System Settings option to import the operating system theme settings into the MDSM. Importing system theme settings affects features like font type, font size, color, and contrast in the MDSM. 1 Open the Inherit System Settings window in one of these ways: • Select Tools Inherit System Settings. • Select the Setup tab and click Inherit System Settings. 2 Select Inherit system settings for color and font.
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book.book Page 64 Tuesday, June 18, 2013 2:53 PM • Physical tab—You can view the organization of the storage array by RAID controller modules, physical disks, and other hardware components. • Mappings tab—You can define the hosts, host groups, and host ports. You can change the mappings to grant virtual disk access to host groups and hosts and create storage partitions. • Setup tab—You can complete the initial setup tasks to configure the storage array.
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book.book Page 65 Tuesday, June 18, 2013 2:53 PM 6 Configuration: About Your Storage Array Out-of-Band and In-Band Management You can manage a storage array in two ways: • Out-of-band management • In-band management Out-of-Band Management Using the out-of-band management method, data is separate from commands and events. Data travels through the host-to-controller interface, while commands and events travel through the management port Ethernet cables.
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book.book Page 66 Tuesday, June 18, 2013 2:53 PM In-Band Management Using in-band management, commands, events, and data travel through the host-to-controller interface. Unlike out-of-band management, commands and events are mixed with data. NOTE: For detailed information on setting up in-band and out-of-band management see the Deployment Guide. When you add storage arrays by using this management method, you need to specify only the host name or IP address of the host.
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book.book Page 67 Tuesday, June 18, 2013 2:53 PM NOTE: For Linux, set the default gateway so that broadcast packets are sent to 255.255.255.0. For Red Hat Enterprise Linux, if no gateway exists on the network, set the default gateway to the IP address of the NIC. NOTE: MDSM uses TCP/UDP port 2463 for communication to the MD Storage Array.
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book.book Page 68 Tuesday, June 18, 2013 2:53 PM NOTE: The host agent must be restarted before in-band management communication can be established. See "Starting or Restarting the Host Context Agent Software" on page 251. 3 Click Add. 4 Use one of these methods to name a storage array: • In the EMW, select the Setup tab, and select Name/Rename Storage Arrays. • In the AMW, select the Setup tab, and select Rename Storage Array.
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book.book Page 69 Tuesday, June 18, 2013 2:53 PM • Save Configuration—Save the configuration parameters in a file that you can use to restore the configuration, or reuse the configuration on another storage array. For more information, see the PowerVault Modular Disk Storage Manager online help topics.
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book.book Page 70 Tuesday, June 18, 2013 2:53 PM A confirmation message is displayed. 4 Click OK. Naming or Renaming Storage Arrays Each storage array must be assigned a unique up to 30-character alphanumeric name. A name can consist of letters, numbers, and the special characters underscore (_), dash (–), and pound sign (#). No other special characters are allowed. To rename a selected storage array: 1 Perform one of these actions: • In the AMW Setup tab, select Rename Storage Array.
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book.book Page 71 Tuesday, June 18, 2013 2:53 PM Setting a Password You can configure each storage array with a password to protect it from unauthorized access. MDSM prompts for the password when an attempt is made to change the storage array configuration, such as, when a virtual disk is created or deleted. View operations do not change the storage array configuration and do not require a password. You can create a new password or change an existing password.
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book.book Page 72 Tuesday, June 18, 2013 2:53 PM Password Guidelines Follow these guidelines when you create a password: • Use secure passwords for your storage array. A password must be easy for you to remember but difficult for others to determine. Consider using numbers or special characters in the place of letters, such as a 1 in the place of the letter I, or the at sign (@) in the place of the letter a. • For increased protection, use a long password with at least 15 alphanumeric characters.
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book.book Page 73 Tuesday, June 18, 2013 2:53 PM Adding/Editing a Comment to an Existing Storage Array A descriptive comment, with an applicable storage array name, is a helpful identification tool. You can add or edit a comment for a storage array in the EMW only. To add or edit a comment: 1 In the EMW, select the Devices tab and select the relevant managed storage array. 2 Select Edit Comment. The Edit Comment dialog is displayed. 3 Type a 60-character comment. 4 Click OK.
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book.book Page 74 Tuesday, June 18, 2013 2:53 PM Enabling Premium Features You can enable premium features on the storage array. To enable the premium features, you must obtain a feature key file specific to the premium feature that you want to enable from your storage supplier. To enable premium features: 1 From the toolbar in AMW, select Storage Array Premium Features. The Premium Features and Feature Pack Information window is displayed. 2 Select the relevant premium feature, and click Enable.
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book.book Page 75 Tuesday, June 18, 2013 2:53 PM Changing the Cache Settings on the Storage Array To change the storage array cache settings: 1 In the AMW, select Storage Array Change Cache Settings. The Change Cache Settings window is displayed. 2 Select or enter the percentage of unwritten data in the cache to trigger a cache flush in Start flushing. 3 Select or enter the percentage of unwritten data in the cache to stop a cache flush in progress in Stop flushing.
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book.book Page 76 Tuesday, June 18, 2013 2:53 PM To change the enclosure order in the Physical pane: 1 In the AMW, select Storage Array Change Enclosure Order. 2 From the enclosures list, select the enclosure you want to move and click either Up or Down to move the enclosure to the new position. 3 Click OK. If you have set a password for the selected storage array, the Enter Password dialog is displayed. 4 Type the current password for the storage array. 5 Click OK.
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book.book Page 77 Tuesday, June 18, 2013 2:53 PM Configuring E-mail Alerts For more information on configuring alert notifications, see "Configuring Alert Notifications" on page 76. To configure e-mail alerts: 1 Open the Configure Alerts dialog by performing one of these actions: • In the Tree view or the Table view on the Devices tab in the EMW, select a node, and then select Edit Configure Alerts. Go to step 3. • In the Setup tab in the EMW, select Configure Alerts. Go to step 2.
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book.book Page 78 Tuesday, June 18, 2013 2:53 PM 6 To include the contact information of the sender in the e-mail alert, select Include contact information with the alerts, and type the contact information. NOTE: Including the contact information in the e-mail alert is optional. 7 Select the e-mail tab to configure the e-mail destinations. • Adding an e-mail address—In e-mail address, type the e-mail address, and click Add.
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book.book Page 79 Tuesday, June 18, 2013 2:53 PM An alert icon is displayed next to each node in the Tree view where an alert is set. To ensure that the e-mail is sent successfully: • You must provide a SMTP mail server name and an e-mail sender address for the e-mail addresses to work. • The e-mail addresses that you had previously configured are displayed in the Configured e-mail addresses area. • You must use fully qualified e-mail addresses, for example, name@mycompany.com.
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book.book Page 80 Tuesday, June 18, 2013 2:53 PM • Adding an SNMP address—In Community name, type the community name. In Trap destination, type the trap destination, and click Add. NOTE: The community name is an American Standard Code for Information Interchange (ASCII) string that identifies a known set of network management stations and is set by the network administrator. The default community name is the string “public”.
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book.book Page 81 Tuesday, June 18, 2013 2:53 PM Battery Settings A smart battery backup unit (BBU) can perform a learn cycle. The smart BBU module includes the battery, a battery gas gauge, and a battery charger. The learn cycle calibrates the smart battery gas gauge so that it provides a measurement of the charge of the battery module. A learn cycle can only start when the battery is fully charged.
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book.book Page 82 Tuesday, June 18, 2013 2:53 PM Setting the Storage Array RAID Controller Module Clocks You can use the Synchronize RAID Controller Module Clocks option to synchronize the storage array RAID controller module clocks with the storage management station. This option makes sure that the event timestamps written by the RAID controller modules to the Event Log match the event timestamps written to host log files. The RAID controller modules remain available during synchronization.
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book.book Page 83 Tuesday, June 18, 2013 2:53 PM Configuration: Event Monitor 7 An event monitor is provided with Dell PowerVault Modular Disk Storage Manager (MDSM). The event monitor runs continuously in the background and monitors activity on the managed storage arrays. If the event monitor detects any critical problems, it can notify a host or remote system using email, Simple Network Management Protocol (SNMP) trap messages, or both.
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book.book Page 84 Tuesday, June 18, 2013 2:53 PM Enabling or Disabling the Event Monitor You can enable or disable the event monitor at any time. Disable the event monitor if you do not want the system to send alert notifications. If you are running the event monitor on multiple systems, disabling the event monitor on all but one system prevents the sending of duplicate messages.
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book.book Page 85 Tuesday, June 18, 2013 2:53 PM Configuration: About Your Host 8 Configuring Host Access Modular Disk Storage Manager (MDSM) software is comprised of multiple modules. One of these modules is the Host Context Agent. The host context agent is installed as part of the MDSM installation and runs continuously in the background.
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book.book Page 86 Tuesday, June 18, 2013 2:53 PM • Change the host port identifier alias or user label. • Move or associate a host port identifier to a different host. • Replace a host port identifier with a new host port identifier. • Manually activate an inactive host port so that the port can gain access to host specific or host group specific LUN mappings. • Change the host port type to another type. • Move a host from one host group to another host group.
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book.book Page 87 Tuesday, June 18, 2013 2:53 PM • Select the Mappings tab. Right-click the root node (storage array name), Default Group node, or Host Group node in the Topology pane to which you want to add the host, and select Define Host from the pop-up menu. The Specify Host Name window is displayed. 3 In Host name, enter an up to 30 character alphanumeric name. 4 Select the relevant option in Do you plan to use the storage partitions in the this storage array? and click Next.
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book.book Page 88 Tuesday, June 18, 2013 2:53 PM The Preview window is displayed. 11 Click Finish. Removing Host Access To remove host access: 1 In the AMW, select the Mappings tab, select the host node in the Topology pane. 2 Perform one of these actions: • Select Mappings Remove. • Right-click the host node and select Remove from the pop-up menu. The Remove confirmation dialog is displayed. 3 Type yes. 4 Click OK.
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book.book Page 89 Tuesday, June 18, 2013 2:53 PM • Right-click the storage array or the Default Group, and select Define Host Group from the pop-up menu. 4 Type the name of the new host group in Enter new host group name. 5 Select the appropriate hosts in the Select hosts to add area. 6 Click Add. NOTE: To remove hosts, select the hosts in the Hosts in group area, and click Remove. 7 Click OK. The host group is added to the storage array.
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book.book Page 90 Tuesday, June 18, 2013 2:53 PM 4 Click Yes. The host is moved to the selected host group with the following mappings: • The host retains the specific virtual disk mappings assigned to it. • The host inherits the virtual disk mappings assigned to the host group to which it is moved. • The host loses the virtual disk mappings assigned to the host group from which it was moved.
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book.book Page 91 Tuesday, June 18, 2013 2:53 PM • Changing a host type MDSM automatically detects these changes for any host running the host agent software. Starting or Stopping the Host Context Agent The host context agent discovers the host topology and starts and stops with the host. The topology discovered by the host context agent can be viewed by clicking Configure Host Access (Automatic) in the Configure tab in the MDSM.
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book.book Page 92 Tuesday, June 18, 2013 2:53 PM 3 If the host context agent is running, click Action Stop, then wait approximately 5 seconds. 4 Click Action Start. I/O Data Path Protection You can have multiple host-to-array connections for a host. Ensure that you select all the connections to the array when configuring host access to the storage array. NOTE: See the Deployment Guide for more information on cabling configurations.
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book.book Page 93 Tuesday, June 18, 2013 2:53 PM Managing Host Port Identifiers You can manage the host port identifiers that are added to the storage array. You can: • Add—Add or associate a new host port identifier to a particular host. • Edit—Change the host port identifier alias or user label. You can move (associate) the host port identifier to a new host. • Replace—Replace a particular host port identifier with another host port identifier.
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book.book Page 94 Tuesday, June 18, 2013 2:53 PM 5 Select the method to add a host port identifier to the host. You can select: • Add by selecting a know unassociated host port identifier—Select the appropriate host port identifier from the existing list of Known unassociated host port identifiers. • Add by creating a new host port identifier—In New host port identifier, enter the name of the new host port identifier. 6 In User label, enter up to 30 character alphanumeric name.
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book.book Page 95 Tuesday, June 18, 2013 2:53 PM Configuration: Disk Groups and Virtual Disks 9 Creating Disk Groups and Virtual Disks Disk groups are created in the unconfigured capacity of a storage array, and virtual disks are created in the free capacity of a disk group. The maximum number of physical disks supported in a disk group is 30. The hosts attached to the storage array read and write data to the virtual disks.
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book.book Page 96 Tuesday, June 18, 2013 2:53 PM A disk group must be organized according to its related tasks and subtasks. For example, if you create a disk group for the Accounting Department, you can create virtual disks that match the different types of accounting transactions performed in the department: Accounts Receivable (AR), Accounts Payable (AP), internal billing, and so forth. In this scenario, the AR and AP virtual disks probably need more capacity than the internal billing virtual disk.
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book.book Page 97 Tuesday, June 18, 2013 2:53 PM 3 Type the name of the disk group (up to 30 characters) in Disk group name. 4 Select the appropriate Physical Disk selection choices, you can select: • Automatic, see step 6 • Manual, see step 9 5 Click Next. 6 For Automatic configuration, The RAID Level and Capacity window is displayed. 7 Select the appropriate RAID level in Select RAID level. You can select RAID levels 0, 1/10, 6, and 5.
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book.book Page 98 Tuesday, June 18, 2013 2:53 PM Locating a Disk Group You can physically locate and identify all of the physical disks that comprise a selected disk group. An LED blinks on each physical disk in the disk group. To locate a disk group: 1 In the AMW, select the Logical tab. 2 Select the appropriate disk group and from the toolbar select Disk Group Blink. The LEDs for the selected disk group blink. 3 After locating the disk group, click OK. The LEDs stop blinking.
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book.book Page 99 Tuesday, June 18, 2013 2:53 PM NOTE: Ensure that you create disk groups before creating virtual disks. To create virtual disks: 1 Choose one of these methods to start the Create Virtual Disk Wizard: • To create a virtual disk from unconfigured capacity in the storage array—On the Logical tab, select an Unconfigured Capacity node, and select Virtual Disk Create. Alternatively, you can right-click the Unconfigured Capacity node, and select Create Virtual Disk from the pop-up menu.
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book.book Page 100 Tuesday, June 18, 2013 2:53 PM 5 In Advanced virtual disk parameters, you can select: • Use recommended settings. • Customize settings. 6 Click Next. 7 In the Customize Advanced Virtual Disk Parameters window, select the appropriate Virtual Disk I/O characteristics type. You can select: • File system (typical) • Database • Multimedia • Custom NOTE: If you select Custom, you must select an appropriate segment size.
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book.book Page 101 Tuesday, June 18, 2013 2:53 PM To change the virtual disk modification priority: 1 In the AMW, select the Logical tab. 2 Select a virtual disk. 3 In the toolbar, select Virtual Disk Change Modification Priority. The Change Modification Priority window is displayed. 4 Select one or more virtual disks. To select nonadjacent virtual disks, press click. To select adjacent virtual disks, press click. To select all of the available virtual disks, click Select All.
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book.book Page 102 Tuesday, June 18, 2013 2:53 PM To change the virtual disk cache settings: 1 In the AMW, select the Logical tab and select a virtual disk 2 In the toolbar, select Virtual Disk Change Cache Settings. The Change Cache Settings window is displayed. 3 Select one or more virtual disks. To select nonadjacent virtual disks, press click. To select adjacent virtual disks, press click. To select all of the available virtual disks, click Select All.
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book.book Page 103 Tuesday, June 18, 2013 2:53 PM 5 Click OK. A message prompts you to confirm the change in the virtual disk modification priority. 6 Click Yes. 7 Click OK. Changing the Segment Size of a Virtual Disk You can change the segment size on a selected virtual disk. During this operation, I/O performance is affected, but your data remains available. Guidelines to proceed with changing the segment size: • You cannot cancel this operation after it starts.
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book.book Page 104 Tuesday, June 18, 2013 2:53 PM To change the segment size of a virtual disk: 1 In the AMW, select the Logical tab and select a virtual disk. 2 Select Virtual Disk Change Segment Size. 3 Select the required segment size. A message prompts you to confirm the selected segment size. 4 Click Yes. The segment size modification operation begins. The virtual disk icon in the Logical pane shows an Operation in Progress status while the operation is taking place.
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book.book Page 105 Tuesday, June 18, 2013 2:53 PM To change the I/O type: 1 Select from these virtual disk I/O characteristic types, based on your application needs: • File system (typical) • Database • Multimedia • Custom The corresponding dynamic cache read prefetch setting and segment size values that are typically well suited for the selected virtual disk I/O characteristic type are populated in the Dynamic cache read prefetch field and the Segment size field.
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book.book Page 106 Tuesday, June 18, 2013 2:53 PM Physical Disk Security with Self Encrypting Disk Self encrypting disk (SED) technology prevents unauthorized access to the data on a physical disk that is physically removed from the storage array. The storage array has a security key. Self encrypting disks provide access to data only through an array that has the correct security key. The self encrypting disk or a security capable physical disk encrypts data during writes and decrypts data during reads.
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book.book Page 107 Tuesday, June 18, 2013 2:53 PM Table 9-1 shows how to interpret the security status of a disk group. Table 9-1. Interpreting Security Status of a Disk Group Secure Security Capable - Yes Security Capable - No Yes The disk group is composed of all Not applicable. Only SED SED physical disks and is in a physical disks can be in a Secure Secure state. state.
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book.book Page 108 Tuesday, June 18, 2013 2:53 PM The Create a secure disk group option is displayed in the Create Disk Group Wizard - Disk Group Name and Physical Disk Selection dialog. The Create a secure disk group option is active only when these conditions are met: • A security key is installed in the storage array. • At least one security capable physical disk is installed in the storage array. • All of the physical disks that you selected on the Physical tab are security capable physical disks.
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book.book Page 109 Tuesday, June 18, 2013 2:53 PM To create a security key: 1 In the AMW toolbar, select Storage ArrayPhysical Disk Security Create Security Key. The Create Security Key window is displayed. 2 Enter a string that becomes part of the secure key identifier, in Security key identifier. You can enter up to 189 alphanumeric characters without spaces, punctuation, or symbols. Additional characters is generated automatically and is appended to the end of the string that you enter.
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book.book Page 110 Tuesday, June 18, 2013 2:53 PM After you have created a security key, you can create secure disk groups from security capable physical disks. Creating a secure disk group makes the physical disks in the disk group security-enabled. Security-enabled physical disks enter Security Locked status whenever power is re-applied. They can be unlocked only by a RAID controller module that supplies the correct key during physical disk initialization.
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book.book Page 111 Tuesday, June 18, 2013 2:53 PM 3 In Secure key identifier, enter a string that becomes part of the secure key identifier. You may leave the text box blank, or enter up to 189 alphanumeric characters without white space, punctuation, or symbols. Additional characters are generated automatically. 4 Edit the default path by adding a file name to the end of the path or click Browse, navigate to the required folder and enter the name of the file.
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book.book Page 112 Tuesday, June 18, 2013 2:53 PM To save the security key for the storage array: 1 In the AMW toolbar, select Storage ArrayPhysical Disk Security Save Security Key File. The Save Security Key File - Enter Pass Phrase window is displayed. 2 Edit the default path by adding a file name to the end of the path or click Browse, navigate to the required folder and enter the name of the file. 3 In Pass phrase, enter a string for the pass phrase.
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book.book Page 113 Tuesday, June 18, 2013 2:53 PM the appropriate security key must also be imported to the new storage array. Otherwise, the data on the security enabled physical disks that were moved is inaccessible. For more information on validating the security key, see the PowerVault Modular Disk Storage Manager online help topics. Unlocking Secure Physical Disks You can export a security-enabled disk group to move the associated physical disks to a different storage array.
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book.book Page 114 Tuesday, June 18, 2013 2:53 PM Configuring Hot Spare Physical Disks Guidelines to configure host spare physical disks: • You can use only unassigned physical disks with Optimal status as hot spare physical disks. • You can unassign only hot spare physical disks with Optimal, or Standby status. You cannot unassign a hot spare physical disk that has the In Use status. A hot spare physical disk has the In Use status when it is in the process of taking over for a failed physical disk.
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book.book Page 115 Tuesday, June 18, 2013 2:53 PM • Right-click the physical disk and select Hot Spare Coverage from the pop-up menu. The Hot Spare Physical Disk Options window is displayed. 4 Select the appropriate option, you can select: • View/change current hot spare coverage—to review hot spare coverage and to assign or unassign hot spare physical disks, if necessary. See step 5.
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book.book Page 116 Tuesday, June 18, 2013 2:53 PM A hot spare is an idle, powered-on, stand-by physical disk ready for immediate use in case of disk failure. If a hot spare is defined in an enclosure in which a redundant virtual disk experiences a physical disk failure, a rebuild of the degraded virtual disk is automatically initiated by the RAID controller modules.
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book.book Page 117 Tuesday, June 18, 2013 2:53 PM If there are secure disk groups and security capable disk groups in the storage array, the hot spare physical disk must match the security capability of the disk group. For example, a non-security capable physical disk cannot be used as a hot spare for a secure disk group. NOTE: For a security capable disk group, security capable hot spare physical disks are preferred.
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book.book Page 118 Tuesday, June 18, 2013 2:53 PM attempts to choose physical disks that provide enclosure loss protection. If you choose to create a disk group by using the Manual method, you must use the criteria specified in Table 9-2. Table 9-2. Criteria for Enclosure Loss Protection RAID Level Criteria for Enclosure Loss Protection RAID level 5 Ensure that all the physical disks in the disk group are located in or RAID level different expansion enclosures.
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book.book Page 119 Tuesday, June 18, 2013 2:53 PM Host-to-Virtual Disk Mapping After you create virtual disks, you must map them to the host(s) connected to the array. Guidelines to configure host-to-virtual disk mapping: • Each virtual disk in the storage array can be mapped to only one host or host group. • Host-to-virtual disk mappings are shared between controllers in the storage array. • A unique LUN must be used by a host group or host to access a virtual disk.
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book.book Page 120 Tuesday, June 18, 2013 2:53 PM 1 In the AMW, select the Mappings tab. 2 In the Topology pane, select: • Default Group • Undefined mappings node • Individual defined mapping • Host group • Host 3 In the toolbar, select Mappings Define Additional Mapping. The Define Additional Mapping window is displayed. 4 In Host group or host, select the appropriate host group or host. All defined hosts, host groups, and the default group are displayed in the list.
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book.book Page 121 Tuesday, June 18, 2013 2:53 PM Modifying and Removing Host-to-Virtual Disk Mapping You can modify or remove a host-to-virtual disk mapping for several reasons, such as an incorrect mapping or reconfiguration of the storage array. Modifying or removing a host-to-virtual disk mapping applies to both hosts and host groups.
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book.book Page 122 Tuesday, June 18, 2013 2:53 PM 8 Restart the host applications. Changing Controller Ownership of the Virtual Disk If the host has a single data-path to the MD storage array, the virtual disk must be owned by the controller to which the host is connected. You must configure this storage array before you start I/O operations and after the virtual disk is created. You can change the RAID controller module ownership of a standard virtual disk or a snapshot repository virtual disk.
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book.book Page 123 Tuesday, June 18, 2013 2:53 PM 3 Perform one of these actions: • Select Mappings Remove. • Right-click the virtual disk, and select Remove Mapping from the pop-up menu. 4 Click Yes to remove the mapping. Changing the RAID Controller Module Ownership of a Disk Group You can change the RAID controller module ownership of a a disk group. You can change the RAID controller module ownership of a standard virtual disk or a snapshot repository virtual disk.
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book.book Page 124 Tuesday, June 18, 2013 2:53 PM The ownership of the disk group is changed. I/O to the disk group is now directed through this I/O path. You are finished with this procedure. NOTE: The disk group may not use the new I/O path until the multi-path driver reconfigures and recognizes the new path. This action usually takes less than 5 minutes.
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book.book Page 125 Tuesday, June 18, 2013 2:53 PM Note the virtual disk that you want to delete from the mapping. For example, the following information may be displayed: mpath6 (3600a0b80000fb6e50000000e487b02f5) dm-10 DELL, MD32xx [size=1.
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book.book Page 126 Tuesday, June 18, 2013 2:53 PM 7 If a new LUN is mapped or volume capacity is changed, run the following command: # rescan_dm_devs 8 Use the multipath -ll command to verify that: • If a new LUN is mapped, the new LUN is detected and given a multipathing device node • If you increased volume capacity, the new capacity is displayed. Restricted Mappings Many hosts are able to map up to 256 logical unit numbers (LUNs) (0 to 255) per storage partition.
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book.book Page 127 Tuesday, June 18, 2013 2:53 PM Mappings area. If additional mappings are defined for one of these Unidentified Mappings, the Define Additional Mapping dialog shows the LUN list, and the Add button is unavailable. • Do not configure dual mappings on a Windows host. • If there is a host with a restricted host type that is part of a specific storage partition, all of the hosts in that storage partition are limited to the maximum number of LUNs allowed by the restricted host type.
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book.book Page 128 Tuesday, June 18, 2013 2:53 PM source virtual disk. When the virtual disk copy is completed or is stopped, ownership of the target virtual disk is restored to its preferred RAID controller module. If ownership of the source virtual disk is changed during the virtual disk copy, ownership of the target virtual disk is also changed. Under certain operating system environments, it may be necessary to reconfigure the multipath driver before an I/O path can be used.
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book.book Page 129 Tuesday, June 18, 2013 2:53 PM c Select Disk Group Change Ownership/Preferred Path. Alternatively, you can right-click the disk group and select Change Ownership/Preferred Path from the pop-up menu. d Select the RAID controller module. CAUTION: Possible loss of data access– Changing ownership at the disk group level causes every virtual disk in that disk group to transfer to the other RAID controller module and use the new I/O path.
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book.book Page 130 Tuesday, June 18, 2013 2:53 PM 3 Select Disk Group Change RAID Level. 4 Select the RAID level (RAID level 0, RAID level 1, RAID level 5, or RAID level 6). The currently selected option is designated with a dot. 5 Click Yes. The RAID level operation begins. Storage Partitioning A storage partition is a logical entity consisting of one or more virtual disks that can be accessed by a single host or shared among hosts that are part of a host group.
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book.book Page 131 Tuesday, June 18, 2013 2:53 PM Storage partitioning is unavailable when: • No valid host groups or hosts exist in the Topology pane on the Mappings tab. • No host ports are defined for the host being included in the storage partition. • All mappings are defined. NOTE: You can include a secondary virtual disk in a storage partition.
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book.book Page 132 Tuesday, June 18, 2013 2:53 PM NOTE: If the RAID level of the disk group is RAID level 5, or RAID level 6, and the expansion enclosure has enclosure loss protection, Display only physical disks that ensures enclosure loss protection is displayed and is selected by default. 4 in the Available physical disks area, select physical disks up to the allowed maximum number of physical disks.
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book.book Page 133 Tuesday, June 18, 2013 2:53 PM Using Unconfigured Capacity You can increase the capacity of a standard virtual disk or a snapshot repository virtual disk using the unconfigured capacity when no free capacity exists on a disk group. An increase is achieved by adding unconfigured capacity, in the form of unassigned physical disks to the disk group of the standard virtual disk or the snapshot repository virtual disk. See "Disk Group Expansion" on page 131.
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book.book Page 134 Tuesday, June 18, 2013 2:53 PM • Remote mirror pairs • Mirror repositories Exporting a Disk Group On the source storage array: 1 Save the storage array configuration. 2 Stop all I/O and unmount or disconnect the file systems on the virtual disks in the disk group. 3 Back up the data on the virtual disks in the disk group. 4 Locate the disk group and label the physical disks. 5 Place the disk group offline. 6 Obtain blank physical disk modules or new physical disks.
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book.book Page 135 Tuesday, June 18, 2013 2:53 PM On the target storage array: 1 Insert the exported physical disks into the available physical disk slots. 2 Review the Import Report for an overview of the disk group that you are importing. 3 Check for non-importable components. 4 Confirm that you want to proceed with the import procedure. NOTE: Some settings cannot be imported during the import disk group procedure.
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book.book Page 136 Tuesday, June 18, 2013 2:53 PM Storage Array Media Scan The media scan is a background operation that examines virtual disks to verify that data is accessible. The process finds media errors before normal read and write activity is disrupted and reports errors to the event log. NOTE: You cannot enable background media scans on a virtual disk comprised of Solid State Disks (SSDs).
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book.book Page 137 Tuesday, June 18, 2013 2:53 PM The media scan duration specifies the number of days for which the media scan runs on the selected virtual disks. 5 To disable media scans on an individual virtual disk, select the virtual disk in the Select virtual disks to scan area, and deselect Scan selected virtual disks. 6 To enable media scans on an individual virtual disk, select the virtual disk in the Select virtual disks to scan area, and select Scan selected virtual disks.
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book.
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book.book Page 139 Tuesday, June 18, 2013 2:53 PM 10 Configuration: Premium Feature— Snapshot Virtual Disks NOTE: If you ordered this feature, you received a Premium Feature Activation card shipped in the same box as your Dell PowerVault MD storage array. Follow the directions on the card to obtain a key file and to enable the feature. NOTE: The snapshot feature allows up to 16 snapshots per LUN and 256 per array to be present at the same time.
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book.book Page 140 Tuesday, June 18, 2013 2:53 PM repository uses less disk space than a full physical copy, because the only data blocks that are stored in the snapshot repository virtual disk are those that have changed since the time of the snapshot. When you create a snapshot virtual disk, specify its location, capacity, schedule, and other parameters. You can disable or delete the snapshot virtual disk when it is not required.
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book.book Page 141 Tuesday, June 18, 2013 2:53 PM Friday, at a time between the end of the work day and 11PM. Do not select an end date. Apply the same schedule to the second virtual disk, then map the two snapshot virtual disks to your backup host server and perform your regular backup procedures. Remember to unmap the two resulting snapshot virtual disks before the next scheduled snapshot begins.
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book.book Page 142 Tuesday, June 18, 2013 2:53 PM Enabling and Disabling Snapshot Schedules A scheduled snapshot operation can be temporarily suspended by disabling the schedule. When a schedule is disabled, the schedule timer continues to run but any scheduled snapshot operation do not occur. Scheduled Snapshot Icons Scheduled snapshots are displayed in the AMW using the following icons. Icon Description The schedule is enabled. Scheduled snapshots occurs. The schedule is disabled.
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book.book Page 143 Tuesday, June 18, 2013 2:53 PM About the Simple Path Using the simple path, you can specify: • Snapshot Virtual Disk Name—A user-specified name that helps you associate the snapshot virtual disk to its corresponding snapshot repository virtual disk and source virtual disk. • Snapshot Repository Virtual Disk Name—A user-specified name that helps you associate the snapshot repository virtual disk to its corresponding snapshot virtual disk and source virtual disk.
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book.book Page 144 Tuesday, June 18, 2013 2:53 PM NOTE: Mapping the snapshot virtual disk to the node that does not own the source virtual disk before the Snapshot enabling process is completed can result in the operating system mis-identifying the snapshot virtual disk. This, in turn, can result in data loss on the source virtual disk or an inaccessible snapshot.
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book.book Page 145 Tuesday, June 18, 2013 2:53 PM 2 In the AMW, select the Logical tab and select a valid source virtual disk. 3 Select Virtual Disk Snapshot Create. Alternatively, you can rightclick the source virtual disk and select Create Snapshot Virtual Disk from the pop-up menu. The Create Snapshot Virtual Disk Wizard - Introduction dialog is displayed. 4 Select Simple (Recommended) and click Next. The Specify Snapshot Schedule window is displayed.
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book.book Page 146 Tuesday, June 18, 2013 2:53 PM 13 To associate the mapping between the storage array name and the virtual disk name, run the host-based SMdevices utility. NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation.
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book.book Page 147 Tuesday, June 18, 2013 2:53 PM – Dell recommends placing the snapshot repository virtual disk within the disk group of the source virtual disk. This ensures that if drives associated with the disk group are moved to another storage array, all the virtual disks associated with the snapshot virtual disk remain in the same group.
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book.book Page 148 Tuesday, June 18, 2013 2:53 PM The destination of a snapshot repository virtual disk is determined based on the free capacity available in the disk group. A snapshot repository virtual disk requires a minimum 8 MB of free capacity. You can choose your preferred creation path—simple or advanced—if the disk group of the source virtual disk has the required amount of free space.
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book.book Page 149 Tuesday, June 18, 2013 2:53 PM 2 Using your Windows system, flush the cache to the source. At the host prompt, type SMrepassist -f and press . For more information, see "SMrepassist Utility" on page 247. 3 Remove the drive letter(s) of the source in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the Snapshot.
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book.book Page 150 Tuesday, June 18, 2013 2:53 PM 3 Select Virtual Disk Snapshot Create. Alternatively, you can rightclick the source virtual disk and select Create Snapshot Virtual Disk from the pop-up menu. The Create Snapshot Virtual Disk Wizard - Introduction dialog is displayed. 4 Select Advanced, and click Next. The Specify Names window is displayed. 5 Enter the Snapshot visual disk name and the Snapshot repository virtual disk name and click Next. The Allocate Capacity window is displayed.
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book.book Page 151 Tuesday, June 18, 2013 2:53 PM 12 Click OK. 13 In the Mappings tab, assign mappings between the snapshot virtual disk and the host that accesses the snapshot virtual disk. 14 To register the snapshot virtual disk with the host operating system, run the host-based hot_add utility. 15 To associate the mapping between the storage array name and the virtual disk name, run the host-based SMdevices utility.
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book.book Page 152 Tuesday, June 18, 2013 2:53 PM • The next available sequence number is based on the number of existing snapshots of a source virtual disk. If you delete a snapshot virtual disk, its sequence number becomes available again. • You must choose a unique name for the snapshot virtual disk and the snapshot repository virtual disks, or an error message is displayed. • Names are limited to 30 characters.
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book.book Page 153 Tuesday, June 18, 2013 2:53 PM NOTE: You can add a maximum of two physical disks at one time to increase snapshot repository virtual disk capacity. To expand the snapshot repository virtual disk from MDSM: 1 In the AMW, select the Logical tab. 2 Select the snapshot repository virtual disk for which you want to increase the capacity. 3 Select Virtual Disk Increase Capacity. NOTE: If no free capacity or unconfigured capacity is available, the Increase Capacity option is disabled.
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book.book Page 154 Tuesday, June 18, 2013 2:53 PM 7 If unassigned physical disks are not available, do you have empty slots in the expansion enclosures? • Yes, there are empty slots—Insert new physical disks by using the information in the initial setup guide for your expansion enclosure. Go to step 9. • No, there are no empty slots—Install another expansion enclosure and additional physical disks.
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book.book Page 155 Tuesday, June 18, 2013 2:53 PM A new Free Capacity node is created and shown in the Logical tab if these conditions exist: • A Free Capacity node did not exist prior to the addition of capacity. • Not all of the capacity that is added is used to increase the capacity of the snapshot repository virtual disk.
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book.book Page 156 Tuesday, June 18, 2013 2:53 PM Preparing Host Servers to Re-create a Snapshot Virtual Disk NOTE: Before you create a new snapshot of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk and snapshot virtual disk to ensure that you capture an accurate snapshot of the source virtual disk. Close all applications, including Windows Internet Explorer, to make sure all I/O activity has stopped.
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book.book Page 157 Tuesday, June 18, 2013 2:53 PM Re-creating Snapshot Virtual Disks You can re-create a snapshot virtual disk that you have previously disabled. CAUTION: Possible loss of data redundancy – If the snapshot virtual disk is in Optimal status, it is first disabled prior to being re-created. This action invalidates the current snapshot.
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book.book Page 158 Tuesday, June 18, 2013 2:53 PM The associated snapshot repository virtual disk must have sufficient capacity to process the rollback operation and the write operations from the host. At most, the snapshot repository virtual disk may need twice the size of the base disk, plus additional metadata space equaling approximately 1/1000th (that is, 0.1%) of the Base volume capacity.
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book.book Page 159 Tuesday, June 18, 2013 2:53 PM If an error occurs during the rollback, the operation is paused and the base virtual disk and snapshot virtual disk displays Needs Attention icons. The RAID controller module also logs the event to the Major Event Log (MEL). Follow the Recovery Guru procedure to correct the error and repeat the rollback operation.
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book.book Page 160 Tuesday, June 18, 2013 2:53 PM 2 Choose one: • Select the snapshot virtual disk, and select Virtual Disk Snapshot Rollback. • Right-click the snapshot virtual disk and select Rollback. The Confirm Rollback Snapshot Virtual Disk dialog is displayed. 3 In the Select rollback priority area, use the slider bar to set rollback priority. NOTE: If priority is set at the lowest rate, normal data write activity is highest priority and the rollback operation takes longer to complete.
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book.book Page 161 Tuesday, June 18, 2013 2:53 PM Canceling a Snapshot Rollback WARNING: Risk of data loss: If you cancel a snapshot rollback in progress, the base virtual disk may remain in an unusable state and the snapshot virtual disk is displayed as failed in the MD storage management software. Therefore, do not cancel a snapshot rollback unless reliable recovery options exist for restoring the content of the base virtual disk. 1 In the array management window, select the Logical tab.
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book.book Page 163 Tuesday, June 18, 2013 2:53 PM 11 Configuration: Premium Feature— Virtual Disk Copy NOTE: A virtual disk copy overwrites data on the target virtual disk. Before starting a virtual disk copy, ensure that you no longer need the data or back up the data on the target virtual disk. NOTE: If you ordered this feature, you received a Premium Feature Activation card that shipped in the same box as your Dell PowerVault MD storage array.
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book.book Page 164 Tuesday, June 18, 2013 2:53 PM Reasons to use virtual disk copy include: • Copying data for improved access—As your storage requirements for a virtual disk change, you can use a virtual disk copy to copy data to a virtual disk in a disk group that uses drives with larger capacity within the same storage array. Copying data for larger access capacity enables you to move data to greater capacity physical disks (for example, 61 GB to 146 GB).
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book.book Page 165 Tuesday, June 18, 2013 2:53 PM formatted with a journaling file system, any attempt to issue a read request to the source virtual disk may be rejected by the storage array RAID controller modules and result in an error message. Make sure that the Read-Only attribute for the target virtual disk is disabled after the virtual disk copy is complete to prevent error messages from being displayed.
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book.book Page 166 Tuesday, June 18, 2013 2:53 PM Creating a Virtual Disk Copy for an MSCS Shared Disk To create a virtual disk copy for a Microsoft Cluster Server (MSCS) shared disk, create a snapshot of the virtual disk, and then use the snapshot virtual disk as the source for the virtual disk copy.
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book.book Page 167 Tuesday, June 18, 2013 2:53 PM • To enable Read-Only permission, select Change Target Virtual Disk Permissions Enable Read-Only. NOTE: Write requests to the target virtual disk are rejected when the ReadOnly permission is enabled on the target virtual disk. • To disable Read-Only permission, select Change Target Virtual Disk Permissions Disable Read-Only.
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book.book Page 168 Tuesday, June 18, 2013 2:53 PM Creating a Virtual Disk Copy CAUTION: Possible loss of data – Source virtual disks that are participating in a virtual disk copy are available for read I/O activity only while a virtual disk copy has a status of In Progress or Pending. Write requests are allowed after the virtual disk copy has completed.
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book.book Page 169 Tuesday, June 18, 2013 2:53 PM Virtual Disk Copy and Modification Operations If a modification operation is running on a source virtual disk or a target virtual disk, and the virtual disk copy has a status of In Progress, Pending, or Failed, the virtual disk copy does not take place. If a modification operation is running on a source virtual disk or a target virtual disk after a virtual disk copy is created, the modification operation must complete before the virtual disk copy can start.
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book.book Page 170 Tuesday, June 18, 2013 2:53 PM Preferred RAID Controller Module Ownership During a virtual disk copy, the same RAID controller module must own both the source virtual disk and the target virtual disk. If both virtual disks do not have the same preferred RAID controller module when the virtual disk copy starts, the ownership of the target virtual disk is automatically transferred to the preferred RAID controller module of the source virtual disk.
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book.book Page 171 Tuesday, June 18, 2013 2:53 PM Copying the Virtual Disk You can create a virtual disk copy by using the Create Copy Wizard. CAUTION: Possible loss of data access – A virtual disk copy overwrites data on the target virtual disk. A virtual disk copy automatically makes the target virtual disk read-only to hosts. You may want to keep this attribute enabled to preserve the data on the target virtual disk.
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book.book Page 172 Tuesday, June 18, 2013 2:53 PM 7 In the Select target virtual disk area, select the appropriate virtual disk 8 In the Select copy priority area, select the relevant copy priority and click Next. The Confirmation window displays the summary of your selections. 9 Type yes and click Finish. NOTE: Operation in Progress icons are displayed on the source virtual disk and the target virtual disk while the virtual disk copy has a status of In Progress or Pending.
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book.book Page 173 Tuesday, June 18, 2013 2:53 PM Setting Copy Priority You can use the Copy Manager to select the rate at which a virtual disk copy completes for a selected copy pair. You can change the copy priority for a copy pair at any of these times: • Before the virtual disk copy begins • While the virtual disk copy has a status of In Progress • When you re-create a virtual disk copy To set copy priority: 1 In the AMW, select Virtual Disk Copy Manager. The Copy Manager window is displayed.
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book.book Page 174 Tuesday, June 18, 2013 2:53 PM To stop a virtual disk copy, complete the following steps: 1 In the AMW, select Virtual Disk Copy Manager. The Copy Manager window is displayed. 2 Select the copy pair in the table. 3 Select Copy Stop. 4 Click Yes. Recopying a Virtual Disk You can recopy a virtual disk when you have stopped a virtual disk copy and you want to start it again or when a virtual disk copy has failed.
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book.book Page 175 Tuesday, June 18, 2013 2:53 PM 3 To ensure that the virtual disk is in Optimal or Disabled status, select the Summary tab, then click Disk Groups & Virtual Disks. 4 Remove the drive letter(s) of the source and (if mounted) virtual disk in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the virtual disk. If this is not done, the copy operation reports that it has completed successfully, but the copied data is not is not updated properly.
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book.book Page 176 Tuesday, June 18, 2013 2:53 PM 4 Select the copy pair in the table. 5 Select Copy Re-Copy. The Re-Copy window is displayed. 6 Set the copy priority. NOTE: There are 5 copy priority rates available: lowest, low, medium, high, and highest. If the copy priority is set at the lowest rate, I/O activity is prioritized, and the virtual disk copy takes longer.
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book.book Page 177 Tuesday, June 18, 2013 2:53 PM 12 Configuration: Premium Feature— Upgrading to High-PerformanceTier The High Performance Tier premium feature on a MD3200 Series array increases the performance of the system beyond that of a MD3200 Series array operating at the standard performance level. If this feature is ordered, a Premium Feature Activation card is placed in the box with the storage array.
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book.book Page 179 Tuesday, June 18, 2013 2:53 PM 13 Configuration: Device Mapper Multipath for Linux Overview The MD3200 Series storage array uses a Linux operating system software framework, known as Device Mapper (DM), to enable multipath capabilities on Linux Host Servers. The DM multipath functionality is provided by a combination of drivers and utilities. This chapter describes how to use those utilities to complete the process of enabling MD3200 Series storage array on a Linux system.
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book.book Page 180 Tuesday, June 18, 2013 2:53 PM Using DM Multipathing Devices NOTE: Using or modifying any nodes other than the multipathing device nodes can result in array or file system problems, including loss of communication with the array and corruption of the file system. Avoid accessing any device other than the multipathing device.
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book.book Page 181 Tuesday, June 18, 2013 2:53 PM Device Mapper Configuration Steps To complete the DM multipathing configuration and make the storage available to the Linux host server: 1 Scan for virtual disks. See "Scan for Newly Added Virtual Disks" on page 181. 2 Display the multipath device topology. See "Display the Multipath Device Topology Using the Multipath Command" on page 181. 3 Create a partition on a multipath device node.
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book.book Page 182 Tuesday, June 18, 2013 2:53 PM # multipath –ll The output must be similar to this example, which shows the output for one mapped virtual disk. mpath1 (3600a0b80005ab177000017544a8d6b92) dm-0 DELL, MD32xx [size=5.
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book.book Page 183 Tuesday, June 18, 2013 2:53 PM DELL is the vendor of the device MD3200 is the model of the device Sdx is the physical path to the owning controller for the device Sdcl is the physical path to the non-owning controller for the device Create a New fdisk Partition on a Multipath Device Node The fdisk command allows you to create partition space for a file system on the newly scanned and mapped virtual disks that are presented to Device Mapper.
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book.book Page 184 Tuesday, June 18, 2013 2:53 PM On SLES 11.x hosts, a partition node has the format /dev/mapper/mpath-part, where is letter(s) assigned to the multipathing device and is the partition number. On SLES 10.3 hosts, a partition node has the format /dev/mapper/mpath_part, where is the letter(s) assigned to the multipathing device and is the partition number.
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book.book Page 185 Tuesday, June 18, 2013 2:53 PM 2 Edit the /etc/multipath.conf file as follows: blacklist { wwid drive_wwid … } or blacklist { device { vendor vendor_string model model_string }; NOTE: RedHat version 6.0 and 6.1 users must rebuild the initramfs root file image to include the updated configuration file by running the #dracut -force command. 3 Reboot the host.
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book.book Page 186 Tuesday, June 18, 2013 2:53 PM Table 13-1. Device Mapper Commands Command Descriptions multipath -h Prints usage information multipath -ll Displays the current multipath topology using all available information (sysfs, the device mapper, path checkers, and so on) multipath Re-aggregates multipathing device with simplified output. multipath -f Flushes out Device Mapper for the specified multipathing device.
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book.book Page 187 Tuesday, June 18, 2013 2:53 PM Limitations and Known Issues • In certain error conditions with the no_path_retry or the queue_if_no_path feature is set, applications may hang. To overcome these conditions the you must enter the following command for each affected multipath device: dmsetup message [device] 0 "fail_if_no_path" where [device] is the multipath device name (for example.
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book.book Page 188 Tuesday, June 18, 2013 2:53 PM Troubleshooting Question Answer How can I check if multipathd Run the following command is running? /etc/init.d/multipathd status Why does the multipath –ll command output not show any devices? First verify if the devices are discovered or not. The command #cat /proc/scsi/scsi displays all the devices that are already discovered. Then verify the multipath.conf to ensure that it is updated with proper settings. After this, run multipath.
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book.book Page 189 Tuesday, June 18, 2013 2:53 PM 14 Management: Firmware Downloads Downloading RAID Controller and NVSRAM Packages A version number exists for each firmware file. The version number indicates whether the firmware is a major version or a minor version. You can use the Enterprise Management Window (EMW) to download and activate both the major firmware versions and the minor firmware versions.
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book.book Page 190 Tuesday, June 18, 2013 2:53 PM Downloading Both RAID Controller and NVSRAM Firmware NOTE: I/O to the array can continue while you are upgrading RAID controller and NVSRAM firmware. NOTE: Dell recommends that the firmware and NVSRAM be upgraded during a maintenance period when the array is not being used for I/O. NOTE: The RAID enclosure must contain at least two disk drives in order to update the firmware on the controller.
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book.book Page 191 Tuesday, June 18, 2013 2:53 PM 7 Click Transfer. Keep these guidelines in mind: – If the Transfer button is inactive, ensure that you either select an NVSRAM file or deselect the Transfer NVSRAM file with RAID controller module firmware option. – If the file selected is not valid or is not compatible with the current storage array configuration, the File Selection Error dialog is displayed. Click OK to close it, and choose a compatible firmware or NVSRAM file.
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book.book Page 192 Tuesday, June 18, 2013 2:53 PM 12 To locate the directory in which the file to download resides, click Browse in the Select files area. The Select File dialog is displayed. 13 Select the file to download. 14 Click OK. 15 If you want to download the NVSRAM file with the RAID controller module firmware, select Download NVSRAM file with firmware in the Select files area. Attributes of the firmware file is displayed in the Firmware file information area.
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book.book Page 193 Tuesday, June 18, 2013 2:53 PM 2 Select Advanced Maintenance Download RAID Controller Module NVSRAM or Select the Support tab, and click Download Firmware. In Select download task, select Download RAID controller module NVSRAM and click OK. An error message is displayed. Click OK to close it and select a compatible file. 3 To locate the directory in which the file to download resides, click Select File. 4 Select the file to download in the File selection area and click OK.
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book.book Page 194 Tuesday, June 18, 2013 2:53 PM 8 In the Storage array pane, select the storage array for which you want to download the NVSRAM firmware. You can select more than one storage array. NOTE: The Details pane shows the details of only one storage array at a time. If you select more than one storage array in the Storage array pane, the details of the storage arrays are not shown in the Details pane. 9 Click NVSRAM in the Download area.
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book.book Page 195 Tuesday, June 18, 2013 2:53 PM Downloading Physical Disk Firmware CAUTION: When updating physical disk firmware, you must stop all I/O activity to the array to prevent data loss. The physical disk firmware controls various features of the physical disk. The disk array controller (DAC) uses this type of firmware. Physical disk firmware stores information about the system configuration on an area of the physical disk called DACstore.
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book.book Page 196 Tuesday, June 18, 2013 2:53 PM To download Physical Disk Firmware: 1 From the AMW, select Advanced Maintenance Download Physical Disk. The Download Physical Disk - Introduction window is displayed. 2 Click Next. The Download Physical Disk Firmware - Add Packages window is displayed. 3 In the Selected Packages area, click Add. 4 Navigate to the location of the packages and click OK. The selected package is added to the Packages to be transferred area. 5 Click Next.
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book.book Page 197 Tuesday, June 18, 2013 2:53 PM Downloading MD1200 Series Expansion Module EMM Firmware NOTE: Due to a limitation with Linux, expansion enclosure EMM firmware updates must be performed using out-of-band management only. Failure to do so may result in the host server becoming unresponsive, and it may require a reboot. You can transfer a downloadable firmware file to the expansion enclosure EMM in the expansion enclosures attached to the storage array.
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book.book Page 198 Tuesday, June 18, 2013 2:53 PM NOTE: If you click Stop while a firmware download is in progress, the download-in-progress finishes before the operation stops. The status for the remaining expansion enclosures changes to Canceled. 7 Monitor the progress and completion status of the download to the expansion enclosures. The progress and status of each expansion enclosure that is participating in the download is displayed in the Status column of the Select enclosures table.
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book.book Page 199 Tuesday, June 18, 2013 2:53 PM controller encounters an error while accessing a peer disk, it is unable to recover the data and affected sectors are added to the unreadable sector log maintained by the controller. Other conditions under which sectors are added to the unreadable sector log include: • A media error is encountered when trying to access a physical disk that is a member of a non-redundant disk group (RAID 0 or degraded RAID 1, RAID 5 or RAID 10).
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book.book Page 202 Tuesday, June 18, 2013 2:53 PM Front Bezel (Optional) Removing the Front Bezel 1 Using the system key, unlock the front bezel (if locked). 2 Lift up the release latch next to the keylock. 3 Rotate the left end of the bezel away from the front panel. 4 Unhook the right end of the bezel and pull the bezel away from the system. Figure 15-1.
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book.book Page 203 Tuesday, June 18, 2013 2:53 PM Hard Drives SAFETY: Models AMT, E03J, and E04J Models AMT, E03J, and E04J are intended for installation only in restricted access locations as defined in cl 1.2.7.3 of IEC 60950-1:2005. Depending on your configuration, your array either supports up to twenty four 2.5" SAS hard drives or up to twelve 3.5" SAS hard drives in internal drive bays. Hard drives are connected to a backplane through hard-drive carriers and can be configured as hot-swappable.
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book.book Page 204 Tuesday, June 18, 2013 2:53 PM Figure 15-3. Removing and Installing a 2.5" Hard-Drive Blank (MD3220 Only) 1 1 2 hard-drive blank 2 release tab Installing a Hard-Drive Blank 1 If installed, remove the front bezel. See "Removing the Front Bezel" on page 202. 2 Insert the hard-drive blank into the drive bay until the blank is fully seated. 3 Close the handle to lock the blank in place. 4 If applicable, replace the front bezel. See "Installing the Front Bezel" on page 202.
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book.book Page 205 Tuesday, June 18, 2013 2:53 PM 2 From the Modular Disk Storage Manager (MDSM) software, prepare the drive for removal. Wait until the hard-drive indicators on the drive carrier signal that the drive can be removed safely. For more information, see your controller documentation for information about hot-swap drive removal. If the drive is online, the green activity/fault indicator flashes as the drive is powered down. When the drive indicators are off, the drive is ready for removal.
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book.book Page 206 Tuesday, June 18, 2013 2:53 PM Installing a Hard Drive CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 207 Tuesday, June 18, 2013 2:53 PM Removing a Hard Drive From a Hard-Drive Carrier Remove the screws from the slide rails on the hard-drive carrier and separate the hard drive from the carrier. See Figure 15-5 for PowerVault MD3200 and Figure 15-6 for PowerVault MD3220. Figure 15-5. Removing and Installing a Hard Drive Into a 3.
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book.book Page 208 Tuesday, June 18, 2013 2:53 PM Figure 15-6. Removing and Installing a Hard Drive Into a 2.
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book.book Page 209 Tuesday, June 18, 2013 2:53 PM Installing a Hard Drive Into a Hard-Drive Carrier 1 Insert the hard drive into the hard-drive carrier with the connector end of the drive at the back. See Figure 15-5. 2 Align the screw holes on the hard drive with the back set of holes on the hard-drive carrier. When aligned correctly, the back of the hard drive is flush with the back of the hard-drive carrier. 3 Attach the four screws to secure the hard drive to the hard-drive carrier.
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book.book Page 210 Tuesday, June 18, 2013 2:53 PM 5 Connect all the power cables to the array. 6 Turn on the array and the host server. Figure 15-7. Removing and Installing a RAID Controller Module Blank 1 1 release latch 2 RAID controller module blank Installing a RAID Controller Module Blank To install a RAID controller module blank: 1 Align the blank with the RAID controller module bay 2 Insert the blank into the chassis until it clicks into place.
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book.book Page 211 Tuesday, June 18, 2013 2:53 PM Removing a RAID Controller Module CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 212 Tuesday, June 18, 2013 2:53 PM Installing a RAID Controller Module CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 213 Tuesday, June 18, 2013 2:53 PM Figure 15-9. Opening and Closing the RAID Controller Module 1 1 screws (2) 3 indent 2 3 2 RAID controller module Closing the RAID Controller Module CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
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book.book Page 214 Tuesday, June 18, 2013 2:53 PM RAID Controller Module Backup Battery Unit Removing the RAID Controller Module Backup Battery Unit CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
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book.book Page 215 Tuesday, June 18, 2013 2:53 PM Installing the RAID Controller Module Backup Battery Unit CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 216 Tuesday, June 18, 2013 2:53 PM Power Supply/Cooling Fan Module NOTE: Your storage array includes two integrated, hot-swappable power supply/cooling fan modules. The array supports two hot-swappable power supply/cooling fan modules. While the array can operate temporarily with one module, both the modules must be present for proper system cooling. CAUTION: A single power supply/cooling fan module can be removed from a powered-on array for a maximum period of 5 minutes.
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book.book Page 217 Tuesday, June 18, 2013 2:53 PM Figure 15-11. Removing and Installing a Power Supply/Cooling Fan Module 1 2 3 1 release tab 3 power supply handle 2 power supply Installing a Power Supply/Cooling Fan Module CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team.
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book.book Page 218 Tuesday, June 18, 2013 2:53 PM 2 Connect the power cable to the power supply/cooling fan module and plug the cable into a power outlet. 3 Secure the power cable using the strap. See Figure 15-12. Figure 15-12. Securing the Power Cable 1 1 strap CAUTION: When connecting the power cable, secure the cable with the strap.
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book.book Page 219 Tuesday, June 18, 2013 2:53 PM 3 Remove the hard drives from: – slots 0 to 2 in PowerVault MD3200 – slots 0 to 5 in PowerVault MD3220 See "Removing a Hard Drive" on page 204. NOTE: Mark each hard drive with it’s slot position as you remove it. 4 Slide the control panel out of the chassis after: – Pushing the release tab toward the front of the array in PowerVault MD3200. See Figure 15-13. – Pulling the release pin toward the front of the array in PowerVault MD3220.
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book.book Page 220 Tuesday, June 18, 2013 2:53 PM Figure 15-14. Removing and Installing the Control Panel-PowerVault MD3220 2 1 1 control panel 2 release pin Installing the Control Panel 1 Align the control panel with the slot on the array. 2 Slide the control panel into the array until: – The release tab clicks into place in PowerVault MD3200. See Figure 15-13. – The release pin clicks into place in PowerVault MD3220. See Figure 15-14. 3 Replace the hard drives in their respective slots.
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book.book Page 221 Tuesday, June 18, 2013 2:53 PM Backplane CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 222 Tuesday, June 18, 2013 2:53 PM Figure 15-15.
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book.book Page 223 Tuesday, June 18, 2013 2:53 PM Figure 15-16. Removing and Installing the Backplane-PowerVault MD3200 1 2 3 1 screws (5) 3 captive screw 2 backplane Figure 15-17.
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book.book Page 224 Tuesday, June 18, 2013 2:53 PM Installing the Backplane 1 Align the holes on the backplane with the holes on the array. 2 Tighten the captive screw to secure the backplane to the chassis. See Figure 15-16 for PowerVault MD3200 or Figure 15-17 for PowerVault MD3220. 3 Replace the screws that secure the backplane to the chassis. See Figure 15-16 for PowerVault MD3200 or Figure 15-17 for PowerVault MD3220.
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book.book Page 225 Tuesday, June 18, 2013 2:53 PM 16 Management: Firmware Inventory A storage array is made up of many components, which may include RAID controller modules, physical disks, and enclosure management modules (EMMs). Each of these components contains firmware. Some versions of firmware are dependent on other versions of firmware. To capture information about all of the firmware versions in the storage array, view the firmware inventory.
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book.book Page 227 Tuesday, June 18, 2013 2:53 PM 17 Management: System Interfaces Microsoft Services Virtual Disk Service The Microsoft Virtual Disk Service (VDS) is a component of the Windows operating system. The VDS component utilizes third-party vendor specific software modules, known as providers, to access and configure third-party storage resources, such as MD3200i storage arrays.
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book.book Page 228 Tuesday, June 18, 2013 2:53 PM VSS attaches to the service and uses it to coordinate the creation of snapshot virtual disks on the storage array. VSS-initiated snapshot virtual disks can be triggered through backup tools, known as requestors.
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book.book Page 229 Tuesday, June 18, 2013 2:53 PM 18 Troubleshooting: Your Storage Array Software Start-Up Routine Look and listen during the array’s start-up routine for the indications described in Table 18-1. For a description of the front- and back-panel indicators, see "Planning: About Your Storage Array" on page 23. Table 18-1. Start-Up Routine Indications Look/Listen for Action Alert messages. See your storage management documentation.
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book.book Page 230 Tuesday, June 18, 2013 2:53 PM To launch the AMW, perform one of these actions: • On the Devices tab, in either the Tree view or the Table view, double-click a storage array. Alternatively, you can right-click a storage array and select Manage Storage Array from the pop-up menu. • On the Setup tab, select Manage a Storage Array. After the AMW is displayed, select the Physical tab to see the components in the storage array. A component that has a problem is indicated by a status icon.
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book.book Page 231 Tuesday, June 18, 2013 2:53 PM In the Table view, every managed storage array is listed once, regardless of the number of attachments it has in the Tree view. After the storage array is contacted by MDSM, an icon representing its hardware status is displayed. Hardware status can be Optimal, Needs Attention, or Fixing.
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book.book Page 232 Tuesday, June 18, 2013 2:53 PM Table 18-3. Additional Status Icons Status Icon Adding a Storage Array Description The Contacting Storage Array icon is shown in the Tree view and Table view until the current status of each managed storage array is known. The Contacting Storage Array icon is shown in the EMW Status Bar and the AMW Status Bar and the tooltip shows Contacting Storage arrays.
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book.book Page 233 Tuesday, June 18, 2013 2:53 PM 2 Enter a name for the support data file in Specify filename or click Browse to navigate to a previously saved file to overwrite an existing file. The suffix .zip is added automatically to the file if you do not specify a suffix for the file. 3 Enter the Execution summary. 4 Click Start. After all of the support files are gathered, they are archived using the file name that you specified. 5 Click OK.
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book.book Page 234 Tuesday, June 18, 2013 2:53 PM Collecting the Physical Disk Data You can use the Collect Physical Disk Data option to collect log sense data from all the physical disks on your storage array. Log sense data consists of statistical information that is maintained by each of the physical disks in your storage array. Your Technical Support representative can use this information to analyze the performance of your physical disks and for troubleshooting problems that may exist.
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book.book Page 235 Tuesday, June 18, 2013 2:53 PM The event log shows two types of event views: • Summary view—Shows an event summary in a table form. • Detail view—Shows details about a selected event. To view the event log: 1 In the AMW, select Advanced Troubleshooting View Event Log. The Event Log is displayed. By default, the summary view is displayed. 2 To view the details of each selected log entry, select View details.
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book.book Page 236 Tuesday, June 18, 2013 2:53 PM You can detect a problem using the following indicators: • Non-Optimal status icons • Alert notification messages that are sent to the appropriate destinations • Hardware indicator lights The status icons return to Optimal status as problems are resolved. Storage Array Profile The storage array profile provides a description of all of the components and properties of the storage array.
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book.book Page 237 Tuesday, June 18, 2013 2:53 PM 4 To search the storage array profile: a Click . b Type the term that you want to search for in the Find text box. If the term is located on the current tab, the term is highlighted in the storage array profile information. NOTE: The search is limited to the current tab. If you want to search for the term in other tabs, select the tab and click the Find button again. c Click the Find button again to search for additional occurrences of the term.
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book.book Page 238 Tuesday, June 18, 2013 2:53 PM Viewing the Logical Associations You can use the Associated Logical Elements option to view the logical associations among different virtual disks in a storage array. To view the associations for source virtual disks, snapshot virtual disks, and snapshot repository virtual disks: 1 In the AMW, select the Logical tab or in the Topology pane of the Mappings tab. 2 Select View Associated Logical Elements.
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book.book Page 239 Tuesday, June 18, 2013 2:53 PM Finding Nodes You can use the Find option to search for a particular node on the Logical tab, the Physical tab, or the Mappings tab of the AMW. The search may be based on a particular node name, the RAID level, virtual disk capacity, or specific free capacity nodes. The search may be based also on one of these combinations: • The node name and the RAID level • The node name and the virtual disk capacity To find nodes: 1 In the AMW, select View Find.
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book.book Page 240 Tuesday, June 18, 2013 2:53 PM 6 To search for all nodes based on their virtual disk capacity, perform these steps: a Select Find all virtual disks with capacity. b Type the capacity in the GB box. c Specify that the capacity to be matched is less than, equal to, or greater than the capacity entered in the GB box. d Go to step 8.
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book.book Page 241 Tuesday, June 18, 2013 2:53 PM 1 On the Logical tab of the AMW, select one of these virtual disks, and go to the indicated step: • Snapshot virtual disk—Go to step 2. • Snapshot repository virtual disk—Go to step 3. • Source virtual disk—Go to step 4. • Target virtual disk—Go to step 5. 2 Select View Go To Snapshot Virtual Disk. The selection jumps to the associated snapshot virtual disk in the Logical pane. 3 Select View Go To Snapshot Repository Virtual Disk.
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book.book Page 242 Tuesday, June 18, 2013 2:53 PM To recover from an unresponsive storage array: 1 Check the Tree View in the EMW to see if all storage arrays are unresponsive. 2 If any storage arrays are unresponsive, check the storage management station network connection to make sure that it can reach the network. 3 Ensure that the RAID controller modules are installed and that there is power to the storage array. 4 If there a problem with the storage array, correct the problem.
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book.book Page 243 Tuesday, June 18, 2013 2:53 PM 12 For an in-band managed storage array, make sure that the host is network accessible by using the ping command to verify that the host can be reached. Type one of these commands, and press . • ping • ping 13 If the verification successful, see step 14, if not, step 15. 14 Remove the host with the Unresponsive status from the EMW, and select Add Storage Array to add the host again.
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book.book Page 244 Tuesday, June 18, 2013 2:53 PM 22 Determine if there is an excessive amount of network traffic to one or more RAID controller modules. This problem is self-correcting because the EMW software periodically retries to establish communication with the RAID controller modules in the storage array. If the storage array was unresponsive and a subsequent try to connect to the storage array succeeds, the storage array becomes responsive.
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book.book Page 245 Tuesday, June 18, 2013 2:53 PM 4 When you have located the physical disks, click OK. The LEDs stop blinking. If any other blink operations (Blink Disk Group, Blink Storage Array, Blink Physical Disk Ports, or Blink Expansion Enclosure) are currently being invoked from another storage management station, these LEDs also stop blinking. 5 In the rare case that the LEDs on the physical disks do not stop blinking, in the AMW, select Storage Array Blink Stop All Indications.
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book.book Page 246 Tuesday, June 18, 2013 2:53 PM Blink Physical Disk) are currently being invoked from another storage management station, these LEDs also stop blinking. 5 In the rare case that the LEDs on the expansion enclosure do not stop blinking, from the AMW, select Storage Array Blink Stop All Indications. If the LEDs successfully stop blinking, a confirmation message is displayed. 6 Click OK.
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book.book Page 247 Tuesday, June 18, 2013 2:53 PM Clicking Cancel stops the state capture process, and any remaining tests do not complete. Any test information that is generated to that point is saved to the state capture file. NOTE: For more information on troubleshooting and recovering from failures, see the PowerVault Modular Disk Storage Manager online help topics. SMrepassist Utility SMrepassist (replication assistance) is a host-based utility for Windows platforms.
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book.book Page 248 Tuesday, June 18, 2013 2:53 PM Unidentified Devices An unidentified node or device occurs when MDSM cannot access a new storage array. Causes for this error include network connection problems, the storage array is turned off, or the storage array does not exist. NOTE: Before beginning any recovery procedure, make sure that the host context agent software is installed and running.
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book.book Page 249 Tuesday, June 18, 2013 2:53 PM b Make sure that the network can access the host by using the ping command in the following syntax: ping . If the network can access the host, continue to step c. If the network cannot access the host, go to step d. c Remove the host with the unresponsive status from the MDSM, and add that host again. If the host returns to optimal status, you have completed this procedure.
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book.book Page 250 Tuesday, June 18, 2013 2:53 PM c Examine the ethernet cables to make sure that you cannot see any damage and that they are tightly connected. d Make sure that the applicable network configuration tasks are done (for example, the IP addresses are assigned to each controller). 5 Make sure that the controller firmware is compatible with MDSM on your management station. If the controller firmware was upgraded, the MDSM may not have access to the storage array.
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book.book Page 251 Tuesday, June 18, 2013 2:53 PM Starting or Restarting the Host Context Agent Software The host context agent software module is the software component that resides on the server or management station that communicates with the MD3200 Series storage arrays. The SMagent software automatically starts after you reboot the host. Windows To restart the SMagent software in Windows: 1 Click Start Settings Control Panel Administrative Tools Services.
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book.book Page 252 Tuesday, June 18, 2013 2:53 PM After the program completes the startup process, text similar to the following messages is displayed: Modular Disk Storage Manager Agent, Version 90.02.A6.14 Built Wed Feb 03 06:17:50 CST 2010 Copyright (C) 2009-2010 Dell, Inc. All rights reserved.
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book.book Page 253 Tuesday, June 18, 2013 2:53 PM Troubleshooting: Your Array 19 Safety First—For you and Your Array CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
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book.book Page 254 Tuesday, June 18, 2013 2:53 PM Troubleshooting Power Supply/Cooling Fan Module CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 255 Tuesday, June 18, 2013 2:53 PM Troubleshooting Array Cooling Problems CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 256 Tuesday, June 18, 2013 2:53 PM c Reseat the EMM module and wait for 30 seconds. See "Removing an EMM" in the MD1200 and MD1220 Storage Enclosures Hardware Owner's Manual. d Turn on the server. e Check the EMM status LED. f If the LED does not turn Green, replace the EMM. If the problem is not resolved, see "Getting Help" on page 265. • If EMM status LED is blinking amber (5 times per sequence), update the firmware to the latest supported firmware on both the EMMs.
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book.book Page 257 Tuesday, June 18, 2013 2:53 PM • If the array status LED is solid or blinking amber: a In the AMW, select the Summary tab, and click on Storage Array needs attention. Follow the listed procedures in the Recovery Guru(s) and wait for up to 5 minutes to check if the LED has turned blue. See "Recovery Guru" on page 235. b If following the recovery guru procedures does not solve the problem, complete the following procedure to further troubleshoot the array.
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book.book Page 258 Tuesday, June 18, 2013 2:53 PM Troubleshooting Hard Drives CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 259 Tuesday, June 18, 2013 2:53 PM Troubleshooting Array and Expansion Enclosure Connections 1 Verify that the RAID controller module port link status LED and the RAID controller module status LED are solid green for each port that is connected to a cable. If the LEDs are not solid green, see "Planning: RAID Controller Modules" on page 31. 2 Ensure that all the cables are attached correctly according to array mode you selected. 3 Turn off the server, storage array, and expansion enclosures.
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book.book Page 260 Tuesday, June 18, 2013 2:53 PM Troubleshooting a Wet Storage Array CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 261 Tuesday, June 18, 2013 2:53 PM Troubleshooting a Damaged Array CAUTION: Many repairs may only be done by a certified service technician. You must only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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book.book Page 262 Tuesday, June 18, 2013 2:53 PM Invalid Storage Array The RAID controller module is supported only in a Dell-supported storage array. Upon installation in the storage array, the controller performs a set of validation checks. The array status LED is lit with a steady amber color while the RAID controller module completes these initial tests and the controllers are booted successfully. If the RAID controller module detects a non-Dell supported storage array, the controller aborts startup.
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book.book Page 263 Tuesday, June 18, 2013 2:53 PM • Backplane/power supply failure • Two or more temperature sensors are unreadable • Failure to detect or unable to communicate with peer port NOTE: If both RAID controller modules fail simultaneously, the enclosure cannot issue critical or noncritical event alarms for any enclosure component. When the enclosure is under critical condition, its enclosure status LED blinks amber.
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book.book Page 265 Tuesday, June 18, 2013 2:53 PM Getting Help 20 Locating Your System Service Tag Your system is identified by a unique Express Service Code and Service Tag number. The Express Service Code and Service Tag are found on the front of the system by pulling out the information tag. This information is used by Dell to route support calls to the appropriate personnel. Contacting Dell NOTE: Dell provides several online and telephone-based support and service options.
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book.book Page 266 Tuesday, June 18, 2013 2:53 PM Documentation Feedback If you have feedback for this document, write to documentation_feedback@dell.com. Alternatively, you can click on the Feedback link in any of the Dell documentation pages, fill up the form, and click Submit to send your feedback.
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