Dell Computer Drive manual Host-to-Virtual Disk Mapping The default setting is Map now

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•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.

Using the simple path, the following defaults are used for the other parameters of a snapshot virtual disk:

•Capacity Allocation — The snapshot repository virtual disk is created using free capacity on the same disk group where the source virtual disk resides.

•Host-to-Virtual Disk Mapping — The default setting is Map now.

•Percent Full — When the snapshot repository virtual disk reaches the specified repository full percentage level, the event is logged in the Main Event Log (MEL). The default snapshot repository full percentage level is 50 percent of the source virtual disk.

•Snapshot Repository Virtual Disk Full Conditions — When the snapshot repository virtual disk becomes full, you are given a choice of failing write activity to the source virtual disk or failing the snapshot virtual disk.

Preparing Host Servers to Create the Snapshot Using the Simple Path

NOTICE: Before using the Snapshot Virtual Disks Premium Feature in a Microsoft® Windows® clustered configuration, you must first map the snapshot virtual disk to the cluster node that owns the source virtual disk. This ensures that the cluster nodes correctly recognize the snapshot virtual disk.

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.

For details on mapping the snapshot virtual disk to the secondary node, refer to the Dell PowerEdge™ Cluster SE600W Systems Installation and Troubleshooting Guide on support.dell.com

NOTE: You can create concurrent snapshots of a source virtual disk on both the source disk group and on another disk group.

Snapshot Virtual Disks

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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 GuideConfigure Tab Summary TabModify Tab Tools Tab ISCSI 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 Adding Storage Arrays Automatic Discovery of Storage ArraysManual Addition of a Storage Array Removing Storage Arrays Naming Storage ArraysInitial setup tasks include Setting Up Your Storage ArrayStorage Array Setting a Password To set, change, or remove a password for a storage arrayStorage Array Support Data Password Guidelines Resetting a PasswordConnecting the Serial Cable Consider these guidelines when you create a passwordMicrosoft Windows Operating Systems System Setup for Password ResetReset Password Configuring Alert Notifications Configuring E-mail AlertsChanging 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 iSCSIChanging the iSCSI Target Authentication Entering Mutual Authentication PermissionsCreating Chap Secrets Valid Ascii Characters for Chap Secrets Space Using iSCSI Changing the iSCSI Target Identification Changing the iSCSI Target DiscoveryType 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 Service Status area, click Start Linux Event MonitorEnabling 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 Host Groups Creating a Host GroupAdding 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 Create a virtual disk and map it to LUN Reboot the host Data Path ProtectionFailover 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 SparesHost-to-Virtual Disk Mapping Creating Host-to-Virtual Disk MappingsModifying and Removing Host-to-Virtual Disk Mapping Changing Controller Ownership of the Virtual Disk Storage PartitioningDisk Group and Virtual Disk Expansion Disk Group ExpansionVirtual Disk Expansion Changing Media Scan Settings Errors discovered by the media scan includeStorage Array Media Scan Microsoft Services Virtual Disk ServiceSuspending 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 CopyCopying the Virtual Disk Choose the target virtual diskClick Next at the bottom Storage Array Performance During Virtual Disk Copy Setting Copy PriorityRecopying a Virtual Disk Stopping a Virtual Disk CopyTo stop a virtual disk copy, complete the following steps 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 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 Recovery Guru Troubleshooting ProblemsStorage Array Profile Device Health Conditions102 SMrepassist UtilitySupport Information Package Click Browse103 Unidentified Devices Recovering from an Unidentified Storage Array105 Ping host-name-or-IP-address-of-the-hostTroubleshooting Removing an EMM from the Expansion Enclosure Inserting an EMM into an Expansion Enclosure107 MD3000 Maintenance Considerations Removing and Inserting Physical Disks108 109 110 111 IndexIndex 113 114