Dell PowerVault MD3820f - Manual (Page 159)

If you decide to re-create the snapshot virtual disk or consistency group snapshot virtual disk, you must
choose a snapshot image from the same base virtual disk.
If you disable the snapshot virtual disk or consistency group snapshot virtual disk, the system performs
the following actions:
• Retains the World-Wide Name (WWN) for the snapshot virtual disk or consistency group snapshot
virtual disk.
• Retains the snapshot virtual disk or consistency group snapshot virtual disk’s association with the
same base virtual disk.
• Retains the snapshot virtual disk or consistency group snapshot virtual disk’s associated repository (if
the virtual disk is designated as read-write).
• Retains any host mapping and access (any read-write requests will fail).
• Removes the snapshot virtual disk or consistency group snapshot virtual disk’s association with the
current snapshot image.
• For a consistency group snapshot virtual disk, disables each member’s snapshot virtual disk.
NOTE: If you are finished with the snapshot virtual disk or consistency group snapshot virtual disk
and do not intend to re-create it at a later time, you must delete the virtual disk, instead of disabling
it.
1. From the AMW, select the Storage & Copy Services tab.
2. Select the snapshot virtual disk or consistency group snapshot virtual disk that you want to disable
and then select one of the following:
– Copy Services → Snapshot Virtual disk → Disable. The Confirm Disable Snapshot Virtual Disk
window is displayed.
– Copy Services → Consistency Group Snapshot Virtual Disk → Disable. The Confirm Disable
Consistency Group Snapshot Virtual Disk window is displayed.
3. Type yes in the text box and then click Disable to disable the snapshot virtual disk.
The snapshot virtual disk or consistency group snapshot virtual disk is displayed in the Logical pane
with the Disabled Snapshot status icon. If you disabled a read-write snapshot virtual disk or
consistency group snapshot virtual disk, its associated snapshot repository virtual disk does not
change status. The write activity to the snapshot repository virtual disk stops until the snapshot virtual
disk or consistency group snapshot virtual disk is re-created.
Re-creating A Snapshot Virtual Disk Or Consistency Group Snapshot Virtual
Disk
Use the Re-Create option when you want to re-create a snapshot virtual disk or consistency group
snapshot virtual disk that you previously disabled. Re-creating a snapshot virtual disk or consistency
group snapshot virtual disk takes less time than creating a new one.
If you have a snapshot virtual disk or consistency group snapshot virtual disk that you no longer need,
you can reuse it (and any associated snapshot repository virtual disk), instead of deleting it, to create a
different snapshot virtual disk or consistency group snapshot virtual disk of the same base virtual disk. You
can re-associate the snapshot virtual disk or consistency group snapshot virtual disk with the same
snapshot image or a different snapshot image as long as the snapshot image is in the same base virtual
disk.
NOTE: If the snapshot virtual disk or consistency group snapshot virtual disk is part of an online
copy relationship, you cannot perform the Re-create option on the virtual disk.
Keep these important guidelines in mind when you re-create a snapshot virtual disk or consistency group
virtual disk:
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