Dell Computer Drive manual SMrepassist -ffilename-identifier

Page 70

Before creating a Snapshot Virtual Disk, note the following:

•The following types of virtual disks are not valid source virtual disks: snapshot repository virtual disks, snapshot virtual disks, target virtual disks that are participating in a virtual disk copy.

NOTE: Virtual Disk Copy is an Advanced (Premium) feature.

•You cannot create a snapshot of a virtual disk that contains unreadable sectors.

•You must satisfy the requirements of your host operating system for creating snapshot virtual disks. Failure to meet the requirements of your host operating system results in an inaccurate point-in-time image of the source virtual disk or the target virtual disk in a virtual disk copy.

NOTICE: Before you create a new point-in-time image of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual 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 Snapshot.

Before creating a snapshot virtual disk, the host server has to be in the proper state. To ensure that the host server is properly prepared to create a snapshot virtual disk, you can either use an application to carry out this task, or you can perform the following steps:

1Stop all I/O activity to the source.

2Using your Windows system, flush the cache to the source. At the host prompt, type

SMrepassist -f<filename-identifier>

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

70

Snapshot Virtual Disks

Image 70

Contents Dell PowerVault Modular Disk Storage Manager User’s Guide W . d e l l . c o m s u p p o r t . d e l l . c o mFebruary 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 About This Guide User InterfaceSummary Tab Configure TabModify Tab ISCSI Tab Tools TabSupport Tab Other Information You May Need View online help View the event logAccess Virtual Disk About Your Storage ArrayOut-of-Band and In-Band Management Automatic Discovery of Storage Arrays Adding Storage ArraysManual Addition of a Storage Array Naming Storage Arrays Removing Storage ArraysSetting Up Your Storage Array Initial setup tasks includeStorage Array To set, change, or remove a password for a storage array Setting a PasswordStorage Array Support Data Connecting the Serial Cable Resetting a PasswordPassword Guidelines Consider these guidelines when you create a passwordSystem Setup for Password Reset Microsoft Windows Operating SystemsReset 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 Windows Starting or Restarting the Host-Agent Software in LinuxStorage Array Storage Array Using iSCSI Using the iSCSI TabEntering 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 Configuring the MD3000i iSCSI Host Ports Advanced iSCSI Host Ports SettingsLowest priority default Viewing or Ending an iSCSI SessionViewing 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 Configuring Host Access About Your HostAutomatic Configuration Manual Configuration using SAS HBAManual Configuration using iSCSI Click NextRemoving Host Access Creating a Host Group Host GroupsAdding a Host to a Host Group Removing a Host From a Host Group Moving a Host to a Different Host GroupHost Topology Removing a Host GroupHost 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 Automatically Configuring Hot Spares Hot Spare Drive ProtectionManually Configuring Hot Spares Click OK in the dialog boxCreating Host-to-Virtual Disk Mappings Host-to-Virtual Disk MappingModifying and Removing Host-to-Virtual Disk Mapping Storage Partitioning Changing Controller Ownership of the Virtual DiskDisk 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 Creating a Snapshot Virtual Disk Using the Simple Path About 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 Creating a Snapshot Virtual Disk Using the Advanced Path About the Advanced PathSnapshot Virtual Disks SMrepassist -ffilename-identifier Creating the Snapshot Using the Advanced Path Snapshot Virtual Disks Specifying Snapshot Virtual Disk Names Source-virtual disk-name-sequence-numberSnapshot Repository Capacity Re-creating Snapshot Virtual Disks Disabling a Snapshot Virtual DiskTo disable a snapshot virtual disk Preparing Host Servers to Re-create a Snapshot Virtual DiskRe-creating a Snapshot Virtual Disk Premium Feature-Virtual Disk Copy Creating a Virtual Disk Copy for an Mscs Shared Disk Reasons to use virtual disk copy include the followingIf you are using the target virtual disk for backup purposes Virtual Disk Read/Write PermissionsVirtual Disk Copy Restrictions Creating a Virtual Disk Copy Preparing Host Servers to Create a Virtual Disk CopyChoose the target virtual disk Copying the Virtual DiskClick Next at the bottom Setting Copy Priority Storage Array Performance During Virtual Disk CopyTo stop a virtual disk copy, complete the following steps Stopping a Virtual Disk CopyRecopying a Virtual Disk Click Yes to stop the virtual disk copyPreparing Host Servers to Recopy a Virtual Disk Recopying the Virtual Disk Removing Copy Pairs Virtual Disk Copy Firmware Downloads Downloading RAID Controller and Nvsram PackagesDownloading Both RAID Controller and Nvsram Firmware Downloading Only Nvsram Firmware Downloading Non-redundant Mscs Nvsram FirmwareDownloading Physical Disk Firmware Downloading EMM Firmware 100 Storage Array Profile Troubleshooting ProblemsRecovery Guru Device Health ConditionsSMrepassist Utility 102Click Browse Support Information Package103 Recovering from an Unidentified Storage Array Unidentified DevicesPing host-name-or-IP-address-of-the-host 105Troubleshooting Inserting an EMM into an Expansion Enclosure Removing an EMM from the Expansion Enclosure107 Removing and Inserting Physical Disks MD3000 Maintenance Considerations108 109 110 Index 111Index 113 114