Laptop User Manual

ManualsBrandsDell ManualsComputer HardwarePOWERVAULT MD3600F

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Table Of Contents

Introduction
- About This Document
- Inside the Box of the Dell PowerVault MD3600f Series Storage Array
  - Dell PowerVault MD3600f Series Storage Array
  - Dell PowerVault Modular Disk Storage Manager
- Other Information You May Need
Planning: About Your Storage Array
- Overview
- Hardware Features
  - Front-Panel Features and Indicators
  - Back Panel Features and Indicators
- Hard-Drive Indicator Patterns
- Power Supply and Cooling Fan Features
- Power Indicator Codes
Planning: RAID Controller Modules
- RAID Controller Modules
- RAID Controller Module Connectors and Features
- Host Channel LED Link/Rate Indications
- RAID Controller Module-Additional Features
- Cache Functions and Features
- SFP Transceivers, Fiber Optic, and SAS Cables
- Interoperability of 2 Gbps, 4 Gbps, and 8 Gbps Devices
Planning: MD3600f Series Storage Array Terms and Concepts
- Physical Disks, Virtual Disks, and Disk Groups
- RAID Levels
  - RAID Level Usage
- Segment Size
- Virtual Disk Operations
- Disk Group Operations
- RAID Background Operations Priority
- Virtual Disk Migration and Disk Roaming
  - Disk Migration
  - Disk Roaming
- Advanced Features
- Multi-Path Software
  - Preferred and Alternate Controllers and Paths
  - Virtual Disk Ownership
- Load Balancing
- Monitoring MD3600f Series System Performance
Configuration: Overview
- User Interface
  - Enterprise Management Window
  - Array Management Window
Configuration: About Your Storage Array
- Out-of-Band and In-Band Management
- Storage Arrays
- Configuring Alert Notifications
  - Configuring E-mail Alerts
  - Configuring SNMP Alerts
- Battery Settings
  - Setting the Storage Array RAID Controller Module Clocks
Configuration: Event Monitor
- Enabling or Disabling the Event Monitor
  - Windows
  - Linux
Configuration: About Your Host
- Configuring Host Access
- Using the Mappings Tab
  - Defining a Host
- Removing Host Access
- Managing Host Groups
- I/O Data Path Protection
- Managing Host Port Identifiers
Configuration: Disk Groups and Virtual Disks
- Creating Disk Groups and Virtual Disks
- Choosing an Appropriate Physical Disk Type
- Physical Disk Security With Self Encrypting Disk
- Configuring Hot Spare Physical Disks
- Enclosure Loss Protection
- Host-to-Virtual Disk Mapping
- Restricted Mappings
  - Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group
- Changing the RAID Level of a Disk Group
- Storage Partitioning
- Disk Group and Virtual Disk Expansion
- Disk Group Migration
  - Export Disk Group
  - Exporting a Disk Group
- Import Disk Group
  - Importing a Disk Group
- Storage Array Media Scan
  - Changing Media Scan Settings
  - Suspending the Media Scan
Configuration: Premium Feature- Snapshot Virtual Disks
- Creating a Snapshot Virtual Disk Using the Simple Path
  - About the Simple Path
  - Preparing Host Servers to Create the Snapshot Using the Simple Path
- Creating a Snapshot Virtual Disk Using the Advanced Path
- Specifying Snapshot Virtual Disk Names
- Snapshot Repository Capacity
- Re-creating Snapshot Virtual Disks
- Disabling a Snapshot Virtual Disk
  - Preparing Host Servers to Re-create a Snapshot Virtual Disk
- Re-creating a Snapshot Virtual Disk
Configuration: Premium Feature- Virtual Disk Copy
- Creating a Virtual Disk Copy for an MSCS Shared Disk
- Virtual Disk Read/Write Permissions
- Virtual Disk Copy Restrictions
- Creating a Virtual Disk Copy
- Preferred RAID Controller Module Ownership
- Failed RAID Controller Module
- Copy Manager
- Copying the Virtual Disk
- Storage Array Performance During Virtual Disk Copy
- Setting Copy Priority
- Stopping a Virtual Disk Copy
- Recopying a Virtual Disk
  - Preparing Host Servers to Recopy a Virtual Disk
  - Recopying the Virtual Disk
- Removing Copy Pairs
Configuration: Premium Feature- Upgrading to High-Performance Tier
Configuration: Premium Feature- Remote Replication
- Switchable Host Access Configuration Required With Remote Replication
- Activating Remote Replication
- Replication Repository Virtual Disks
- RAID Levels for Replication Repository Virtual Disks
- Primary and Secondary Virtual Disk Pairs
- Using Remote Replication With Other Features
- Storage Partitioning With Remote Replication
- Snapshot Virtual Disk With Remote Replication
- Virtual Disk Copy With Remote Replication
- Virtual Disk Expansion With Remote Replication
- Required Switch Zoning Configurations
- Zoning Guidelines for Remote Replication
- Switch Cascading
- Journaling File Systems and Remote Replication
- Setting Up and Managing Remote Replication
- Activating the Remote Replication Premium Feature and Creating Replication Virtual Disks
- Activating and Creating Replication Repository Virtual Disks From the Storage Array
- Activating and Creating Replication Repository Virtual Disks From an Existing Disk Group
- Creating a Remote Replication
- Selecting the Secondary Virtual Disk
- Setting the Write Mode
- Setting Synchronization Priority and Synchronization Method
- Completing the Remote Replication
- RAID Controller Module Ownership/Preferred Path
- Viewing Information About a Remote Replication or Replication Repository Virtual Disk
- Viewing the Properties Pane
- Viewing Logical Elements of the Secondary Virtual Disk
- Viewing the Physical Components or Logical Elements of the Primary Virtual Disk
- Virtual Disk Status Icons
- Changing Write Mode and Consistency Group Membership
- Resynchronizing Virtual Disks
- Normally Synchronized Virtual Disks
- Changing Synchronization Priority and Method
- Unsynchronized Virtual Disks
- Automatically Resynchronizing Virtual Disks
- Manually Resynchronizing Virtual Disks
- Reversing Roles Between the Primary and Secondary Virtual Disks
- Promoting the Secondary Virtual Disk or Demoting the Primary Virtual Disk
- Suspending a Remote Replication
- Resuming a Remote Replication
- About Resumed Remote Replications
- Testing Communication Between the Primary and Secondary Virtual Disks
- Deleting a Virtual Disk From a Replicated Pair in a Storage Array
- Deleting a Primary Virtual Disk
- Deleting a Secondary Virtual Disk
- Deleting a Primary Virtual Disk in a Replicated Pair From a Storage Array
- Deleting a Secondary Virtual Disk in a Replicated Pair From a Storage Array
- Removing a Remote Replication From a Storage Array
- Deactivating the Remote Replication on the Storage Array
- Disabling the Remote Replication Premium Feature
Configuration: Device Mapper Multipath for Linux
- Overview
- Using DM Multipathing Devices
  - Prerequisites
  - Device Mapper Configuration Steps
- Limitations and Known Issues
- Troubleshooting
Management: Installing Array Components
- Recommended Tools
- Front Bezel (Optional)
  - Removing the Front Bezel
  - Installing the Front Bezel
- Hard Drives
- RAID Controller Module
- RAID Controller Module Backup Battery Unit
  - 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
  - Installing a Power Supply/Cooling Fan Module
- Control Panel
  - Removing the Control Panel
  - Installing the Control Panel
- Backplane
  - Removing the Backplane
  - Installing the Backplane
Management: Firmware Downloads
- Downloading RAID Controller and NVSRAM Packages
- Downloading Both RAID Controller and NVSRAM Firmware
- Downloading Only NVSRAM Firmware
- Downloading Physical Disk Firmware
- Downloading MD1200 Series Expansion Module EMM Firmware
- Self-Monitoring Analysis and Reporting Technology (SMART)
- Media Errors and Unreadable Sectors
Management: Firmware Inventory
- Viewing the Firmware Inventory
Management: System Interfaces
- Microsoft Services
  - Virtual Disk Service
  - Volume Shadow-Copy Service
Troubleshooting: Your Storage Array Software
- Start-Up Routine
- Device Health Conditions
- Storage Array Support Data
- Automatically Collect the Support Bundle Data
- Collecting the Physical Disk Data
- Event Log
- Recovery Guru
- Storage Array Profile
- Viewing the Logical Associations
- Viewing the Physical Associations
- Finding Nodes
- Using Go To
- Recovering From an Unresponsive Storage Array Condition
- Locating a Physical Disk
- Locating an Expansion Enclosure
- Capturing the State Information
- SMrepassist Utility
- Unidentified Devices
- Recovering From an Unidentified Storage Array
- Starting or Restarting the Host Context Agent Software
Troubleshooting: Your Array
- Safety First-For You and Your Array
- Troubleshooting Storage Array Startup Failure
- Troubleshooting Loss of Communication
- Troubleshooting an SFP Transceiver
- Troubleshooting External Connections
- Troubleshooting Power Supply/Cooling Fan Module
- Troubleshooting Array Cooling Problems
- Troubleshooting Expansion Enclosure Management Modules
- Troubleshooting RAID Controller Modules
- Troubleshooting Hard Drives
- Troubleshooting Array and Expansion Enclosure Connections
- Troubleshooting a Wet Storage Array
- Troubleshooting a Damaged Array
- Troubleshooting RAID Controller Modules
  - Conditions
Getting Help
- Contacting Dell
Index

144 Configuration: Premium Feature—Snapshot Virtual Disks

After the snapshot repository virtual disk is created, I/O write requests to the

source virtual disk resume. Before a data block on the source virtual disk is

modified, the contents of the block to be modified are copied to the snapshot

repository virtual disk for safekeeping. Because the snapshot repository virtual

disk stores copies of the original data in those data blocks, further changes to

those data blocks write only to the source virtual disk. The snapshot

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, you specify its location, capacity,

and other parameters. You can disable or delete the snapshot virtual disk

when it is not required. If you disable a snapshot virtual disk, you can re-

create and reuse it the next time you perform a backup. For more

information, see "Re-creating Snapshot Virtual Disks" on page 157. If you

delete a snapshot virtual disk, you also delete the associated snapshot

repository virtual disk.

NOTE: Deleting a snapshot does not affect data on the source virtual disk.

NOTE: The following host preparation sections also apply when using the snapshot

feature through the CLI interface.

Creating a Snapshot Virtual Disk Using the

Simple Path

You can choose the simple path to create a snapshot virtual disk if the disk

group of the source virtual disk has the required amount of free space. A

snapshot repository virtual disk requires a minimum 8 MB of free capacity.

The destination of a snapshot repository virtual disk is determined based on

the free capacity available in the disk group.

If 8 MB of free capacity is not available in the disk group of the source virtual

disk, the Create Snapshot Virtual Disks feature defaults to the advanced path.

For more information, see "Creating a Snapshot Virtual Disk Using the

Advanced Path" on page 148.

In the advanced path option, you can choose to place the snapshot repository

virtual disk in another disk group or you can use unconfigured capacity on the

storage array to create a new disk group.

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