64 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. Snapshot Virtual Disk Components
Table 4-2 lists the snapshot virtual disk commands and brief descriptions of
what the commands do.
Source virtual disk Standard virtual disk from which the snapshot is
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
Table 4-2. Snapshot Virtual Disk Commands
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.
book.book Page 64 Wednesday, June 8, 2011 12:20 PM