Dell Computer Drive manual Preparing Host Servers to Recopy a Virtual Disk

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Preparing Host Servers to Recopy a Virtual Disk

NOTICE: Before you create a new copy of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk (and, if applicable, the target disk) to ensure that you capture an accurate point-in-time image of the source virtual disk. Close all applications, including Windows Internet Explorer, to make sure all I/O activity has stopped.

NOTE: Removing the drive letter of the associated virtual disk(s) in Windows or unmounting the virtual drive in Linux will help to guarantee a stable copy of the drive for the virtual disk copy.

Before creating a new virtual disk copy for an existing copy pair, both the host server and the associated virtual disk you are recopying have to be in the proper state. Perform the following steps to prepare your host server and virtual disk:

1Stop all I/O activity to the source and target virtual disk.

2Using your Windows system, flush the cache to both the source and the target virtual disk (if mounted). At the host prompt, type

SMrepassist -f<filename-identifier>

and press <Enter>. See "SMrepassist Utility" on page 102 for more information.

3Click the Summary tab, then click Disk Groups & Virtual Disks to ensure that the virtual disk is in Optimal or Disabled status.

4Remove 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 will report that it has completed successfully, but the copied data will not be updated properly.

5Follow any additional instructions for your operating system. Failure to follow these additional instructions can create unusable virtual disk copies.

NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation.

Virtual Disk Copy

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Contents W . d e l l . c o m s u p p o r t . d e l l . c o m Dell PowerVault Modular Disk Storage Manager User’s GuideFebruary Contents Connecting the Serial Cable System Setup for Password Reset Viewing iSCSI Statistics and Setting Baseline Disk Groups and Virtual Disks Premium Feature-Snapshot Virtual Disks Troubleshooting Problems 101 Contents User Interface About This GuideSummary Tab Configure TabModify Tab ISCSI Tab Tools TabSupport Tab View online help View the event log Other Information You May NeedAbout Your Storage Array Access Virtual DiskOut-of-Band and In-Band Management Automatic Discovery of Storage Arrays Adding Storage ArraysManual Addition of a Storage Array Removing Storage Arrays Naming Storage ArraysInitial setup tasks include Setting Up Your Storage ArrayStorage Array To set, change, or remove a password for a storage array Setting a PasswordStorage Array Support Data Consider these guidelines when you create a password Resetting a PasswordPassword Guidelines Connecting the Serial CableMicrosoft Windows Operating Systems System Setup for Password ResetReset Password Configuring E-mail Alerts Configuring Alert NotificationsChanging Expansion Enclosure ID Numbers Storage Array Configuring Snmp Alerts Starting or Restarting the Host-Agent Software in Linux Starting or Restarting the Host-Agent Software in WindowsStorage Array Storage Array Using the iSCSI Tab Using iSCSIEntering Mutual Authentication Permissions Changing the iSCSI Target AuthenticationCreating Chap Secrets Valid Ascii Characters for Chap Secrets Space Using iSCSI Changing the iSCSI Target Discovery Changing the iSCSI Target IdentificationType the alias in the iSCSI target alias field and click OK Advanced iSCSI Host Ports Settings Configuring the MD3000i iSCSI Host PortsViewing or Ending an iSCSI Session Lowest priority defaultViewing iSCSI Statistics and Setting Baseline Statistics Edit, Remove, or Rename Host Topology Host Topology Actions Desired Action Using iSCSI Event Monitor Service Status area, click Start LinuxEnabling the Event Monitor Disabling the Event Monitor About Your Host Configuring Host AccessManual Configuration using SAS HBA Automatic ConfigurationClick Next Manual Configuration using iSCSIRemoving Host Access Creating a Host Group Host GroupsAdding a Host to a Host Group Moving a Host to a Different Host Group Removing a Host From a Host GroupRemoving a Host Group Host TopologyHost Context Agent Data Path Protection Create a virtual disk and map it to LUN Reboot the hostFailover with Red Hat Enterprise Linux About Your Host Disk Groups and Virtual Disks Creating Disk Groups and Virtual Disks Manual Configuration Disk Groups and Virtual Disks Disk Groups and Virtual Disks Hot Spare Drive Protection Automatically Configuring Hot SparesClick OK in the dialog box Manually Configuring Hot SparesCreating Host-to-Virtual Disk Mappings Host-to-Virtual Disk MappingModifying and Removing Host-to-Virtual Disk Mapping Changing Controller Ownership of the Virtual Disk Storage PartitioningDisk Group Expansion Disk Group and Virtual Disk ExpansionVirtual Disk Expansion Errors discovered by the media scan include Changing Media Scan SettingsStorage Array Media Scan Virtual Disk Service Microsoft ServicesSuspending the Media Scan Volume Shadow-Copy Service Disk Groups and Virtual Disks Premium Feature-Snapshot Virtual Disks About the Simple Path Creating a Snapshot Virtual Disk Using the Simple PathHost-to-Virtual Disk Mapping The default setting is Map now SMrepassist -ffilename-identifier Creating the Snapshot Using the Simple Path Snapshot Virtual Disks About the Advanced Path Creating a Snapshot Virtual Disk Using the Advanced PathSnapshot Virtual Disks SMrepassist -ffilename-identifier Creating the Snapshot Using the Advanced Path Snapshot Virtual Disks Source-virtual disk-name-sequence-number Specifying Snapshot Virtual Disk NamesSnapshot Repository Capacity Disabling a Snapshot Virtual Disk Re-creating Snapshot Virtual DisksPreparing Host Servers to Re-create a Snapshot Virtual Disk To disable a snapshot virtual diskRe-creating a Snapshot Virtual Disk Premium Feature-Virtual Disk Copy Reasons to use virtual disk copy include the following Creating a Virtual Disk Copy for an Mscs Shared DiskVirtual Disk Read/Write Permissions If you are using the target virtual disk for backup purposesVirtual Disk Copy Restrictions Preparing Host Servers to Create a Virtual Disk Copy Creating a Virtual Disk Copy Choose the target virtual disk Copying the Virtual Disk Click Next at the bottom Storage Array Performance During Virtual Disk Copy Setting Copy PriorityClick Yes to stop the virtual disk copy Stopping a Virtual Disk CopyRecopying a Virtual Disk To stop a virtual disk copy, complete the following stepsPreparing Host Servers to Recopy a Virtual Disk Recopying the Virtual Disk Removing Copy Pairs Virtual Disk Copy Downloading RAID Controller and Nvsram Packages Firmware DownloadsDownloading Both RAID Controller and Nvsram Firmware Downloading Non-redundant Mscs Nvsram Firmware Downloading Only Nvsram FirmwareDownloading Physical Disk Firmware Downloading EMM Firmware 100 Device Health Conditions Troubleshooting ProblemsRecovery Guru Storage Array Profile102 SMrepassist UtilityClick Browse Support Information Package103 Unidentified Devices Recovering from an Unidentified Storage Array105 Ping host-name-or-IP-address-of-the-hostTroubleshooting Inserting an EMM into an Expansion Enclosure Removing an EMM from the Expansion Enclosure107 Removing and Inserting Physical Disks MD3000 Maintenance Considerations108 109 110 111 IndexIndex 113 114