Dell POWERVAULT MD3620I - Manual (Page 172)

172 Configuration: Premium Feature—Snapshot Virtual Disks
Disabling a Snapshot Virtual Disk
Disable a snapshot virtual disk if one of the following conditions exists:
• You do not need the snapshot now.
• You intend to re-create the snapshot at a later time and want to retain the
associated snapshot repository virtual disk so that you do not need to
create it again.
• You want to maximize storage array performance by stopping copy-on-
write activity to the snapshot repository virtual disk.
NOTE: If you do not intend to re-create the snapshot virtual disk at a later time, in
the Logical pane, select the snapshot virtual disk, and select Virtual Disk  Delete
to remove it. The associated snapshot repository virtual disk is also removed. For
more information on removing a snapshot virtual disk, see the PowerVault Modular
Disk Storage Manager online help topics.
NOTE: The SMdevices utility displays the snapshot virtual disk in its output, even
after the snapshot virtual disk is disabled.
To disable a snapshot virtual disk:
1 In the AMW, select the Logical tab, select the snapshot virtual disk, and
select Virtual Disk Snapshot Disable.
2 In the text box, type yes and click OK.
The snapshot virtual disk is disabled. The associated snapshot repository
virtual disk does not change status. The copy-on-write activity to the
snapshot repository virtual disk stops until the snapshot virtual disk is re-
created.
Preparing Host Servers to Re-Create a Snapshot Virtual Disk
NOTE: Before you create a new snapshot of a source virtual disk, stop any data
access (I/O) activity or suspend data transfer to the source virtual disk and
snapshot virtual disk to ensure that you capture an accurate snapshot 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 in Windows or
unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive
for the Snapshot.
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