Dell PowerVault MD3000i Hardware Owner's Manual

Also see for PowerVault MD3000i: Getting started Tuning guide System installation guide User guide Information update

Contents

Dell PowerVault MD3000i Hardware Owner's Manual Manual pdf 48 page image

48 Using Your RAID EnclosureYou can find more details on using the virtual disk copy feature in the MDStorage Manager User’s Guide.Virtual Disk RecoveryYou can use the Edit host server-to-virtual disk mappings feature to recoverdata from the backup virtual disk. This functionality enables you to unmapthe original source virtual disk from its host server, then map the backupvirtual disk to the same host server.Ensure that you record the LUN used to provide access to the source virtualdisk. You will need this information when you define a host server-to-virtualdisk mapping for the target (backup) virtual disk. Also, be sure to stop all I/Oactivity to the source virtual disk before beginning the virtual disk recoveryprocedure.Using Snapshot and Disk Copy TogetherYou can use the Snapshot Virtual Disk and Virtual Disk Copy premiumfeatures together to back up data on the same storage array, or to restore thedata on the snapshot virtual disk to its original source virtual disk.You can copy data from a virtual disk in one of two ways:• By taking a point-in-time snapshot of the data• By copying the data to another virtual disk using a virtual disk copyYou can select a snapshot virtual disk as the source virtual disk for a virtualdisk copy. This configuration is one of the best ways you can apply thesnapshot virtual disk feature, since it enables complete backups without anyimpact to the storage array I/O.You cannot, however, use a snapshot repository virtual disk as a source virtualdisk or as a target virtual disk in a virtual disk copy. If you select the sourcevirtual disk as the target virtual disk of a virtual disk copy, you must disable allsnapshot virtual disks associated with the source virtual disk.Hardware Redundancy and FailoverThis section provides basic information on how to connect a host server tothe RAID controller modules in a RAID enclosure in order to achieveredundancy and failover.