Dell PowerVault MD3000i - Manual (Page 62)

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Using the Snapshot Feature
• Map the snapshot virtual disk and make it accessible to any host on a
storage area network. You can make snapshot data available to secondary
hosts for read and write access by mapping the snapshot to the hosts.
• Create up to four snapshots per virtual disk.
NOTE:
The maximum number of snapshot virtual disks is one-half of the total
number of virtual disks supported by the RAID controller module.
• Increase the capacity of a snapshot virtual disk.
Table 4-1 lists the components that comprise a snapshot virtual disk and
briefly describes what they do.
Table 4-1 lists the snapshot virtual disk commands and brief descriptions of
what the commands do.
Component Description
Source virtual disk Standard virtual disk from which the snapshot is
created
Snapshot virtual disk Point-in-time image of a standard virtual disk
Snapshot repository virtual disk Virtual disk that contains snapshot metadata and
copy-on-write data for a particular snapshot
virtual disk
Table 4-1. Snapshot Virtual Disk Commands
Command Description
create snapshotVirtualDisk Creates a snapshot virtual disk.
re-create snapshot Starts a fresh copy-on-write operation by using an
existing snapshot virtual disk.
set (snapshotVirtualDisk) Defines the properties for a snapshot virtual disk and
enables you to rename a snapshot virtual disk.
stop snapshot Stops a copy-on-write operation.