Dell™ PowerVault™ MD3000 RAID Enclosure Hardware Owner’s Manual w w w. d e l l . c o m | s u p p o r t . d e l l .
Notes, Notices, and Cautions NOTE: A NOTE indicates important information that helps you make better use of your computer. NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death. ____________________ Information in this document is subject to change without notice. © 2007 Dell Inc. All rights reserved.
Contents 1 About Your System . Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Enclosure Features . . . . . . . Modular Disk Storage Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 10 13 14 17 18 . .
Supported RAID Levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 RAID 0 . . . . . . . RAID 1 . . . . . . . RAID 5 . . . . . . . RAID 10 . . . . . . RAID Level Usage . Segment Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 36 36 36 37 37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Hot Spares and Rebuild . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Updating Enclosure Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . RAID Controller Module Firmware Physical Disk Firmware . . . . . . Expansion Enclosure Firmware . . 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing Enclosure Components Recommended Tools . 54 54 54 . . . . . . . . . . . . . . . . . . 55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 . . . . . . . . . . . . . . .
Troubleshooting Enclosure Cooling Problems Troubleshooting a Fan . . . . . . . . . . . . . . . . . 72 . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Troubleshooting SAS Physical Disks . . . . . . . . . . . . . . . . . . . . . . Troubleshooting Enclosure Connections . . . . . . . . . . . . . . . . . . . . Hard Controller Failures and Lockdown Conditions Getting Help . . . . . . . . . . . . . . 74 . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 74 74 75 75 . . . . . . . . . .
About Your System The Dell™ PowerVault™ MD3000 is a 3U rack-mounted external Redundant Array of Independent Disks (RAID) enclosure capable of accommodating up to 15 3.0-Gbps, Serial-Attached SCSI (SAS) disks. The RAID enclosure can be daisy-chained with up to two additional MD1000 expansion units, providing access to a maximum of 45 disks in the entire storage array. Connectivity between the RAID enclosure and the host server is provided by Dell SAS 5/E Host Bus Adapters (HBAs).
• Up to 2 TB (2036 GB) storage on a single virtual disk • Support for up to two PowerVault MD1000 expansion enclosures through SAS Out port connectors on the RAID controller modules NOTE: These numbers represent maximum theoretical performance based on system architecture. Actual performance depends on customer environment and application usage.
• The Getting Started Guide provides an overview of enclosure features, setting up your enclosure, and technical specifications. • Setting Up Your PowerVault MD3000 provides an overview of setting up and cabling your storage array. • The PowerVault MD3000 Installation Guide provides installation and configuration instructions for both software and hardware. • The PowerVault MD Storage Manager CLI Guide provides information about using the command line interface (CLI).
Figure 1-1. LEDs on the Front Bezel 1 2 3 Table 1-1. Front Bezel Indicators Item LED Indicator LED Icon Condition 1 Split mode (green) Because this mode is unused in the system, this LED should always be unlit. 2 Power (green) When lit, at least one power supply is supplying power to the enclosure. 3 Enclosure status (blue/amber) Steady amber: Power is on and enclosure is in reset state. Steady blue: Power is on and enclosure status is OK.
Figure 1-2. Front-Panel Features 1 2 3 4 5 1 enclosure status LED 2 power LED 4 enclosure mode switch (unused) 5 physical disks (15) 3 split mode LED (unused) Table 1-2. Front-Panel Components Component Enclosure status LED (blue/amber) Icon Condition Steady amber: Power is on and enclosure is in reset state. Steady blue: Power is on and enclosure status is OK. Flashing blue: Host server is identifying the enclosure. Flashing amber: Enclosure is in fault state.
Table 1-2. Front-Panel Components (continued) Component Icon Condition Enclosure mode switch Unused in this system. NOTICE: This system does not support user-customizable operating modes. Therefore, the split mode LED and enclosure mode switch are not functional. However, if additional expansion enclosures are daisy chained to your system, the enclosure mode switch on the RAID array enclosure must be in single-mode position. For more information, see "Cabling Your RAID Enclosure" on page 21.
Table 1-3.
RAID Controller Modules The RAID controller modules provide high-performance, advanced virtual disk configuration, and faulttolerant disk subsystem management. Each RAID controller module contains 512 MB of cache that is mirrored with the other controller's cache for high availability and protected by a battery for up to 72 hours.
• One SAS Out port connector • Debug port (Dell support only) For a description of each component on the front panel of the RAID controller module, see Table 1-4. For an explanation of how to connect the enclosure using the RAID controller module ports, see "Cabling Your RAID Enclosure" on page 21. Figure 1-5. RAID Controller Module External Panel (front view) 1 2 3 4 5 6 7 8 9 10 11 12 Table 1-4.
Table 1-4. RAID Controller Module Component Functions (continued) Item Component 8 Icon Function Ethernet Link LED (green) Green: Ethernet connection is active. 9 Ethernet Connector Provide a 10/100 Mbps Ethernet connection for out-of-band management of the enclosure. 10 Ethernet Speed LED (green) Green: Ethernet connection is operating at 100BASE-T. Off: Ethernet connection is not active. Off: Ethernet connection is operating at 10BASE-T or is not active.
Battery Backup Unit Each RAID controller contains a three-cell lithium-ion battery backup unit (BBU) that powers the controller’s cache memory and preserves the cache contents in the event of a power outage of up to 72 hours. The RAID controller firmware performs a test of the BBU at startup and will illuminate the battery fault LED if the battery is not operating within specified ranges, or if the battery is missing. For a description of the battery fault LED, see Table 1-5.
Write-Through Cache Write-through cache is a caching strategy whereby data is written to the physical disk before completion status is returned to the host operating system. Write-through cache is considered more secure than write-back cache, since a power failure is less likely to cause loss of data. The RAID controller automatically switches to write-through if cache mirroring is disabled or if the battery is missing or has a fault condition. Write-through cache results in lower performance.
Table 1-5. Power Supply/Cooling Fan Module LED Indicators Type Color DC power Green Icon Function On: DC output voltages are within specifications. Off: No power or voltages not within specifications. Power supply/cooling fan fault Amber AC power Green On: DC output voltages are not within specifications or one (or both) fans are in fault. Off: No fault condition is present. On: AC input voltage is within specifications. Off: No power or voltages not within specifications.
About Your System
Cabling Your RAID Enclosure This section provides the following information: • Procedures for connecting your RAID enclosure to a host system • A description of redundant, nonredundant, and clustering configurations, including cabling diagrams for each Before You Begin Before connecting your RAID enclosure, ensure that the following are available: • • • The components that shipped with your RAID enclosure, including: – Power cords (2) – SAS interconnect cables – MD3000 Resource CD – Rail kit
Each MD3000 RAID controller module also contains a SAS Out port connector. This port allows you the option to connect the RAID enclosure to an expansion enclosure. Cabling the Enclosure You can cable your enclosure to up to four hosts and up to two expansion enclosures. The configuration that you choose depends on the number of hosts you have, whether you are connecting to a standalone host or a cluster node, and the level of data redundancy that you need.
Figure 2-1. Cabling One Host with Nonredundant Data Paths single-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-2.
Figure 2-3. Cabling a Two-Node Cluster (Single HBA, Nonredundant Data Paths from Each Node) single-HBA host server single-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-4 and Figure 2-5 show redundant, high-availability cabling configurations for one and two hosts. If any one path fails, at least one HBA is still connected to one RAID controller. Figure 2-4.
Figure 2-5. Cabling a Single Host (Single-HBA) Using Redundant Data Paths single-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Dual SAS In-Port Configurations Figure 2-6 through Figure 2-12 show supported nonredundant and redundant cabling configurations to MD3000 RAID controller modules with two SAS In port connectors. Each diagram shows the maximum number of optional expansion enclosures attached.
Figure 2-6. Cabling Up to Four Hosts with Nonredundant Data Paths single-HBA host server single-HBA host server single-HBA host server single-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-7 through Figure 2-10 show redundant, high-availability cabling configurations for one and two hosts. If any one path fails, at least one HBA is still connected to one RAID controller.
Figure 2-7. Cabling a Single Host (Dual HBA with Four Cable Connections) Using Redundant Data Paths dual-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-8.
Figure 2-9. Cabling Two Hosts (with Dual HBAs) Using Redundant Data Paths dual-HBA host server dual-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-10.
Figure 2-11 through Figure 2-12 show redundant, two-node cluster configurations using a single RAID enclosure that is subsequently expanded to two more storage enclosures. Figure 2-11. Cabling a Two-Node Cluster (Single HBA, Redundant Data Paths from Each Node) single-HBA host server single-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure MD1000 Expansion Enclosure MD1000 Expansion Enclosure Figure 2-12.
For a more detailed discussion of redundancy and nonredundancy, as well as alternate path software, see "Hardware Redundancy and Failover" on page 49. Attaching MD1000 Expansion Enclosures One of the features of the MD3000 is the ability to add up to two MD1000 expansion enclosures for additional capacity. This expansion increases the maximum physical disk pool to 45 3.5" SAS physical disks.
d Using the MD Storage Manager, update the MD3000 RAID controller firmware to the latest version available on support.dell.com (Support→ Download Firmware→ Download RAID Controller Module Firmware) and the NVSRAM (Support→ Download Firmware→ Download RAID Controller Module NVSRAM). 4 Stop I/O and turn off all systems: a Stop all I/O activity to the array and turn off affected host systems attached to the MD3000. b Turn off the MD3000. c Turn off any MD1000 enclosures in the affected system.
d Using the MD Storage Manager, update the MD3000 RAID controller firmware (Support→ Download Firmware→ Download RAID Controller Module Firmware) and the NVSRAM (Support→ Download Firmware→ Download RAID Controller Module NVSRAM). 2 Stop I/O and turn off all systems: a Stop all I/O activity to the array and turn off affected host systems attached to the MD3000. b Turn off the MD3000. c Turn off any MD1000 enclosures in the affected system.
Using Your RAID Enclosure This section covers the following information: • Basic concepts of a RAID solution including physical disks, virtual disks, and disk groups • RAID levels supported by MD Storage Manager • Hot spare operations and rebuilds • Media errors and unreadable sectors • RAID operations and features • Advanced RAID features • Hardware redundancy and failover including cabling • Updating enclosure firmware Physical Disks, Virtual Disks, and Disk Groups Physical disks in your R
Physical Disk States The RAID controller module recognizes the physical disk states (mode and status reported in MD Storage Manager) described in Table 3-1. Table 3-1. RAID Controller Physical Disk States Status Mode Description Optimal Unassigned The physical disk in the indicated slot is unused Steady Green and available to be configured. Optimal Assigned The physical disk in the indicated slot is configured as part of a disk group.
Virtual Disks and Disk Groups When configuring a storage array, you would normally proceed in this order: • Organize the physical disks into disk groups. • Create virtual disks within these disk groups. • Determine which hosts you want to grant access to which virtual disks, then create mappings to associate the virtual disks with the hosts. NOTE: Host access must be created prior to mapping virtual disks to them.
Using multiple physical disks has several advantages over using a single physical disk, including: • Placing data on multiple physical disks, called striping, means that input/output (I/O) operations can 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. Each RAID level provides different performance and protection.
RAID Level Usage To ensure best performance, you should select an optimal RAID level when you create a system physical disk.
Global Hot Spares The MD3000 supports global hot spares. A global hot spare can replace a failed physical disk in any virtual disk with a redundant RAID level as long as the capacity of the hot spare is equal to or larger than the size of the configured capacity on the physical disk it replaces, including its metadata. Hot Spare Operation When a physical disk fails, the virtual disk automatically rebuilds using an available hot spare.
RAID Operations and Features This section details the following RAID operations and features supported by your enclosure or RAID controller: • Virtual disk operations • Disk group operations • RAID background operations priority • Virtual disk migration and roaming Virtual Disk Operations Virtual Disk Initialization Every virtual disk must be initialized. Up to four concurrent initializations can occur for the same RAID controller module.
Media Verification Another background task performed on the RAID controller module is media verification of all configured physical disks in a disk group. The RAID controller module uses the Read operation to perform verification on the space configured in virtual disks and the space reserved by the controller for the metadata. Cycle Time The media verification operation runs only on selected disk groups, independent of other disk groups.
Segment Size Migration Segment size refers to the amount of data (in kilobytes) that the RAID controller module writes on a single physical disk in a virtual disk before writing data on the next physical disk. Valid values for the segment size are 8, 16, 32, 64, 128, 256, and 512 KB. Dynamic segment size migration enables the segment size of a given virtual disk to be changed. A default segment size was set when the virtual disk was created, based on such factors as the RAID level and expected usage.
Disk Group Operations Limit The maximum number of active, concurrent disk group processes per controller is one. This limit is applied to the following disk group processes: virtual disk RAID level migration, segment size migration, virtual disk capacity expansion, disk group expansion, and disk group defragmentation. If a redundant controller fails with an existing disk group process, the process on the failed controller is transferred to the peer controller.
When you migrate a physical disk or a disk group from one MD3000 array to another, the MD3000 you migrate to will recognize any data structures and/or metadata you had in place on the migrating MD3000. However, if you are migrating from a non-PV controller, the MD3000 array will not recognize the migrating metadata. In this case, the RAID controller will initialize the physical disks and mark them as unconfigured capacity.
• Enabling premium features before migration — Before migrating disk groups and virtual disks, enable the required premium features on the destination storage array. If a disk group is migrated from a storage array that has a premium feature enabled and the destination array does not have this feature enabled, an Out of Compliance error message can be generated. For specific procedures to correct the error, refer to the Recovery Guru.
• You plan to have all attached hosts share access to all virtual disks on the storage array. When you choose this type of configuration, all of the hosts must have the same operating system and must have special software (such as clustering software) to manage virtual disk sharing and accessibility. If either of the following is true, you must use more than one storage partition: • You want specific hosts to access specific virtual disks in the storage array.
Snapshot Virtual Disks A snapshot is a point-in-time image of a virtual disk. The snapshot provides an image of the virtual disk at the time the snapshot was created. Typically, you create a snapshot so that an application (for example, a backup application) can access the snapshot and read the data while the source virtual disk remains online and user-accessible. When the backup is completed, the snapshot virtual disk is no longer needed.
Volume Shadow-Copy Service The Microsoft Volume Shadow-copy Service (VSS) is a storage management interface for Microsoft Windows Server® 2003. VSS enables your storage array to interact with third-party applications that use the VSS Application Programming Interface. Microsoft VSS is included in the Windows Server 2003 installation. NOTE: A volume is another term for virtual disk. VSS attaches to the service and uses it to coordinate the creation of snapshot virtual disks on the storage array.
Target Virtual Disk — When you start a virtual disk copy, the target virtual disk maintains a copy of the data from the source virtual disk. You can choose whether to use an existing virtual disk or create a new virtual disk as the target virtual disk. If you choose an existing virtual disk as the target, all data on the target is overwritten. A target virtual disk can be a standard virtual disk or the source virtual disk of a failed or disabled snapshot virtual disk.
Hardware Redundancy and Failover This section provides basic information that will help you determine how to connect a host to the RAID controller modules in a RAID enclosure in order to achieve redundancy and failover. NOTE: The best practice for ensuring data access is to avoid a configuration with a single point of failure. A single point of failure is any component or path that is not duplicated (redundant) or whose failure can cause loss of data access.
Paths used by the preferred controller to access either the disks or the host are called the preferred paths; redundant paths are called the alternate paths. If a failure causes the preferred path to become inaccessible, the storage array automatically uses the alternate path to access data. Host Bus Adapters Each cable connection from a host to a RAID controller module is made through an HBA. The HBA is installed in the host and provides an interface to the internal bus of the host.
This cabling topology, when used with alternate path software, ensures a redundant path from the host server to the virtual disks. If the connection from In-0 on the RAID controller to the host port becomes unavailable, the alternative path software will transfer I/O activity on RAID controller module 0 to RAID controller module 1. While RAID controller module 0 is unavailable, the host can access all virtual disks through RAID controller module 1.
Figure 3-3. Two Hosts, each with Two Cable Connections dual-HBA host server dual-HBA host server RAID controller module 0 RAID controller module 1 MD3000 RAID Enclosure This cabling topology, when used with alternate path software, ensures a redundant path from the host to the virtual disks. If any component (HBA, HBA port, cable, RAID controller module port, or RAID controller module) fails, a host can still access the virtual disks through an alternate path.
RAID Controller Failover Modes Failover provides redundant access to the virtual disks owned by either RAID controller module on the storage array. Failover happens automatically (and transparently). As a result, the host(s) never loses access through the preferred controller which owns the virtual disk.
Updating Enclosure Firmware You can use MD Storage Manager to upgrade the firmware for the RAID controller module, the controller NVSRAM, and the physical disks. In a redundant configuration, the RAID controller module firmware can be upgraded with no interruption to data access. RAID Controller Module Firmware The RAID controller module firmware and NVSRAM files are needed to properly use MD Storage Manager and all of its features.
Installing Enclosure Components This section explains how to install the following components: • Front bezel (optional) • Physical disks and disk carriers • RAID controller modules • Battery backup unit • Power supplies • Control panel • Enclosure midplane Recommended Tools The procedures in this section require the use of one or more of the following tools: • #2 Phillips-head screwdriver • Torx T10 driver • Wrist grounding strap, as explained in the safety instructions found in your Prod
Figure 4-1. Installing and Removing the Front Bezel 1 1 bezel lock 2 2 3 release tab/interlocking notch 3 U-shaped handle 4 To replace the bezel, insert the interlocking notch into the U-shaped handle on the side of the front enclosure panel. 5 Snap the left side of the bezel into place in the U-shaped handle on the left side of the enclosure. 6 To lock the bezel, insert the key and turn to the right. Removing and Installing Physical Disks Your enclosure supports up to 15 SAS 3.
CAUTION: Always wear a wrist grounding strap when handling equipment with static-sensitive components. 1 Wait until the LED indicators on the physical disk carrier stop flashing. 2 Squeeze the release mechanism on the front of the physical disk carrier (see Figure 4-2). Figure 4-2. Installing and Removing Physical Disks 1 2 1 carrier release mechanism 2 disk carrier handle 3 Open the physical disk carrier handle by rotating it downward.
CAUTION: Always wear a wrist grounding strap when handling equipment with static-sensitive components. 1 Perform the following steps to install the new physical disk into the carrier: NOTE: Data from virtual disks created on a PERC 5 SAS controller cannot be migrated to an MD3000 or to an MD1000 expansion enclosure connected to an MD3000. a If you are replacing a physical disk in the carrier, remove the four screws that secure the disk to its carrier and remove the disk (see Figure 4-3).
2 With the physical disk carrier handle open, carefully align the channel on the disk carrier guide rail with the appropriate disk slot keying feature on the chassis face plate, and insert the disk (see Figure 4-2). 3 Push the physical disk carrier into the slot until the bottom of the open carrier handle makes contact with the chassis face plate. 4 Rotate the carrier handle to the closed position while continuing to push the carrier into the slot.
Figure 4-4. Removing and Installing a RAID Controller Module 1 1 release tab 2 2 release lever Installing a RAID Controller Module 1 Carefully insert the RAID controller module into the empty module slot. 2 Push the module to the back of the slot until it is firmly seated in the backplane connector (see Figure 4-4). 3 Push the release lever in (towards the enclosure) until the module is retracted into the slot and is secure.
CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the enclosure and protecting against electrostatic discharge. NOTICE: RAID controller modules are hot-pluggable and can be removed and installed without shutting down the enclosure.
5 Disconnect the battery unit from the connector by sliding it towards the back of the controller, then remove it from the controller module. 6 Place the replacement battery unit into the controller module tray and push the battery unit into the connector on the RAID controller circuit board. 7 Tighten the thumbscrew to secure the battery unit to the controller. 8 Reinstall the battery cover. 9 Reinstall the RAID controller module (see "Installing a RAID Controller Module" on page 60).
Figure 4-6. Replacing the Power Supply 4 3 1 1 power supply 4 on/off switch 2 captive screws (2) 2 3 handle CAUTION: The power supply/cooling fan modules are heavy. Use both hands when removing. 3 Grasp the handle on the power supply and carefully pull the module out of the bay (see Figure 4-6). NOTICE: The power-supply handle is provided to ease the task of pulling the module from the bay. Do not use this handle to carry the module.
Removing and Installing the Control Panel The control panel powers the LED indicators on the front panel of the system enclosure. It is connected to the backplane and cannot be removed or replaced unless the system is powered down. CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure.
Figure 4-7. Removing and Replacing the Control Panel 2 1 3 1 faceplate screws (16) 2 control panel 3 thumbscrews 6 Using a Torx T10 driver, remove all 16 screws from the front faceplate of the enclosure as shown in Figure 4-7. 7 Remove the front faceplate from the enclosure and place it on a flat, secure surface. 8 Slide the control panel assembly straight out from its connector on the backplane (see Figure 4-7).
6 Reconnect power cables to the enclosure and power it back on. 7 Power on the host server. Removing and Installing the Midplane CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the enclosure and protecting against electrostatic discharge.
Figure 4-8. Removing and Replacing the Controller/Power Supply Cage 1 2 1 Phillips screws (4) 2 controller/power supply cage 5 Slide the controller/power supply cage out of the enclosure and place it aside. 6 Reaching into the enclosure chassis from the back, carefully disconnect the midplane from the control panel and lift it out of the enclosure (see Figure 4-9). 7 To re-install the midplane, reverse the previous steps.
Figure 4-9.
Troubleshooting Your Enclosure Safety First—For You and Your Enclosure To perform certain procedures in this document, you must work inside the enclosure. While working inside the enclosure, do not attempt to perform service except as explained in this guide and elsewhere in your documentation. CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure.
Troubleshooting a Wet Enclosure Problem • Liquid spilled on the enclosure. • Excessive humidity. Action CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the enclosure and protecting against electrostatic discharge. 1 Turn off the enclosure and disconnect all power.
• RAID controller modules • Enclosure midplane 2 Ensure that all cables are properly connected and that there are no bent pins in the connector. If problems are encountered, see "Getting Help" on page 77. Troubleshooting Power Supplies Problem • Enclosure-status indicators show a problem. • Power-supply fault indicators are lit. Action CAUTION: Only trained service technicians are authorized to remove the enclosure cover and access any of the components inside the enclosure.
Troubleshooting Enclosure Cooling Problems Problem • Systems management software issues a fan-related error message. Action Ensure that none of the following conditions exist: • Ambient temperature is too high. • External airflow is obstructed. • A power supply/cooling fan module has failed. See "Troubleshooting a Fan" on page 72. Troubleshooting a Fan Problem • Enclosure-status indicator is amber. • Systems management software issues a fan-related error message.
NOTICE: This procedure can destroy data stored on the physical disks. Before you continue, back up all files on the disk. Problem • A single physical disk is not seen in MD Storage Manager. Action 1 Remove the physical disk from the enclosure. See "Removing and Installing Physical Disks" on page 56. 2 Inspect the physical disk and midplane connectors for obvious damage. 3 Re-install the physical disk in its original bay. See "Removing and Installing Physical Disks" on page 56.
Troubleshooting Enclosure Connections Problem • Enclosure is not seen by attached host controller. Action • Inspect RAID controller module cables for connectivity problems, such as damaged or disconnected cables and poor connections. For detailed cabling instructions, see "Cabling Your RAID Enclosure" on page 21. Hard Controller Failures and Lockdown Conditions Certain events can cause a RAID controller module to fail and/or shut down.
Critical Conditions The storage array will generate a critical event if the RAID controller module detects a critical condition that could cause immediate failure of the enclosure and/or loss of data.
Troubleshooting Your Enclosure
Getting Help Obtaining Assistance CAUTION: If you need to remove the system cover, first disconnect the power and modem cables from all electrical outlets. 1 Complete the procedures in "Troubleshooting Your Enclosure" on page 69. 2 Review the storage array status in MD Storage Manager and record any information provided. 3 Use Dell's extensive suite of online services available at Dell Support (support.dell.com) for help with installation and troubleshooting procedures.
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Support Service Dell's support service is available 24 hours a day, 7 days a week, to answer your questions about Dell hardware. Our support staff use computer-based diagnostics to provide fast, accurate answers. To contact Dell's support service, see "Before You Call" on page 80 and then see the contact information for your region or go to support.dell.com. Dell Enterprise Training Dell enterprise training is available; see www.dell.com/training for more information.
Returns that are missing any of the preceding requirements will be refused at our receiving dock and returned to you. Before You Call NOTE: Have your Express Service Code ready when you call. The code helps Dell's automated-support telephone system direct your call more efficiently. If possible, turn on your system before you call Dell for technical assistance and call from a telephone at or near the computer.
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Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Chile (Santiago) Website: www.dell.com/cl Country Code: 56 E-mail: la-techsupport@dell.com City Code: 2 Sales and Customer Support China (Xiamen) Technical Support website: support.dell.com.cn Country Code: 86 Technical Support E-mail: support.dell.com.
Country (City) International Access Code Country Code City Code Colombia Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Website: www.dell.com/cl E-mail: la-techsupport@dell.com General Support Costa Rica 01-800-915-4755 Website: www.dell.com/cr E-mail: la-techsupport@dell.com General Support 0800-012-0231 Czech Republic (Prague) Website: support.euro.dell.com International Access Code: 00 E-mail: czech_dell@dell.
Country (City) International Access Code Country Code City Code Ecuador Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Website: www.dell.com/ec E-mail: la-techsupport@dell.com General Support (calling from Quito) General Support (calling from Guayaquil) El Salvador toll-free: 999-119-877-655-3355 toll-free: 1800-999-119-877-6553355 Website: www.dell.com/ec E-mail: la-techsupport@dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers France (Paris) (Montpellier) Website: support.euro.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Greece Website: support.euro.dell.com International Access Code: 00 Technical Support 00800-44 14 95 18 Country Code: 30 Gold Service Technical Support 00800-44 14 00 83 Grenada Switchboard 2108129810 Gold Service Switchboard 2108129811 Sales 2108129800 Fax 2108129812 E-mail: la-techsupport@dell.
Country (City) International Access Code Country Code City Code India Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Website: support.ap.dell.com E-mail: india_support_desktop@dell.com india_support_notebook@dell.com india_support_Server@dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Italy (Milan) Website: support.euro.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Japan (Kawasaki) Website: support.jp.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Korea (Seoul) E-mail: krsupport@dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Malaysia (Penang) Website: support.ap.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Netherlands (Amsterdam) Website: support.euro.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Poland (Warsaw) Website: support.euro.dell.com International Access Code: 011 E-mail: pl_support_tech@dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Singapore (Singapore) NOTE: The phone numbers in this section should be International Access Code: 005 called from within Singapore or Malaysia only. Country Code: 65 Website: support.ap.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Spain (Madrid) Website: support.euro.dell.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers Taiwan Website: support.ap.dell.com International Access Code: 002 E-mail: support.dell.com.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address U.K. (Bracknell) Website: support.euro.dell.com International Access Code: 00 E-mail: dell_direct_support@dell.com Country Code: 44 Customer Care website: support.euro.dell.com/uk/en/ECare/form/home.
Country (City) International Access Code Country Code City Code Department Name or Service Area, Website and E-Mail Address Area Codes, Local Numbers, and Toll-Free Numbers U.S.A.
Country (City) International Access Code Country Code City Code U.S. Virgin Islands Department Name or Service Area, Website and E-Mail Address E-mail: la-techsupport@dell.com General Support Venezuela Area Codes, Local Numbers, and Toll-Free Numbers toll-free: 1-877-702-4360 Website: www.dell.com/ve E-mail: la-techsupport@dell.
Getting Help
Glossary This section defines or identifies technical terms, abbreviations, and acronyms used in your system documents. A — Ampere(s). AC — Alternating current. ACPI — Advanced Configuration and Power Interface. A standard interface for enabling the operating system to direct configuration and power management. ambient temperature — The temperature of the area or room where the system is located. ANSI — American National Standards Institute.
cm — Centimeter(s). DIN — Deutsche Industrie Norm. cmos — Complementary metal-oxide semiconductor. directory — Directories help keep related files organized on a disk in a hierarchical, “inverted tree” structure. Each disk has a “root” directory. Additional directories that branch off the root directory are called subdirectories. Subdirectories may contain additional directories branching off them.
expansion card — An add-in card, such as a NIC or SCSI adapter, that plugs into an expansion-card connector on the system board. An expansion card adds some specialized function to the system by providing an interface between the expansion bus and a peripheral. expansion-card connector — A connector on the system board or riser board for plugging in an expansion card. F — Fahrenheit. FAT — File allocation table. The file system structure used by MS-DOS to organize and keep track of file storage.
jumper — Small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The wire connects the pins and creates a circuit, providing a simple and reversible method of changing the circuitry in a board. m — Meter(s). K — Kilo-; 1000. mAh — Milliampere-hour(s). Kb — Kilobit(s); 1024 bits. Mb — Megabit(s); 1,048,576 bits. KB — Kilobyte(s); 1024 bytes. Kbps — Kilobit(s) per second. MB — Megabyte(s); 1,048,576 bytes.
NMI — Nonmaskable interrupt. A device sends an NMI to signal the processor about hardware errors. ns — Nanosecond(s). NTFS — The NT File System option in the Windows 2000 operating system. NVRAM — Nonvolatile random-access memory. Memory that does not lose its contents when you turn off your system. NVRAM is used for maintaining the date, time, and system configuration information. parity — Redundant information that is associated with a block of data.
ROM — Read-only memory. Your system contains some programs essential to its operation in ROM code. A ROM chip retains its contents even after you turn off your system. Examples of code in ROM include the program that initiates your system’s boot routine and the POST. ROMB — RAID on motherboard. rpm — Revolutions per minute. RTC — Real-time clock. SCSI — Small computer system interface. An I/O bus interface with faster data transmission rates than standard ports.
UNIX — Universal Internet Exchange. UNIX, the precursor to Linux, is an operating system written in the C programming language. uplink port — A port on a network hub or switch used to connect to other hubs or switches without requiring a crossover cable. UPS — Uninterruptible power supply. A battery-powered unit that automatically supplies power to your system in the event of an electrical failure. USB — Universal Serial Bus.
Glossary
Index C cabling enclosure, 22-30 host, 50-51 enclosure management module, 14 external connections troubleshooting, 69 consistency check, 39 contacting Dell, 80 F control panel installing/removing, 64 firmware, 54 cooling fan features, 18 troubleshooting, 72 front bezel indicators, 10 removing and replacing, 55 front-panel indicators LED indicators, 11 D damaged systems troubleshooting, 70 Dell contacting, 80 disk group about, 33 defragmenting, 41 H hard controller failure, 74 host bus adapter, 50
Index storage management software See MD Storage Manager storage management station, 8 support contacting Dell, 80 system cooling troubleshooting, 72 virtual disk about, 33 initializing, 39 migration, 42 recovery, 48 W warranty, 8 T telephone numbers, 80 thermal thresholds, 17, 53 tools needed, 55 troubleshooting, 69 cooling fan, 72 damaged system, 70 enclosure connection, 74 external connections, 69 physical disk, 72 power supplies, 71 start-up routine, 69 system cooling, 72 wet system, 70 112 V
