Dell PowerVault MD3820f - Manual (Page 155)

To remove a member virtual disk from a consistency group:
1. From the AMW, select the Storage & Copy Services tab.
2. Do one of the following:
– Select the base virtual disk that you want to remove from the consistency group and then select
Storage → Virtual disk → Remove From Consistency Group.
– Select the consistency group to which you want to add member virtual disks and then select
Copy Services → Consistency Group → Remove Member Virtual Disks.
3. If you selected a base virtual disk that is a member of multiple consistency groups or if you selected a
consistency group from which you want to remove member virtual disk, do one of the following:
– Select one or more consistency groups, from the Consistency groups table, that you want to
remove the base virtual disk from and then click Remove.
NOTE: You can click the Select all check box to remove the virtual disk from all the
consistency groups displayed in the table.
– Select the member virtual disks, from the Member virtual disks table, that you want to remove
from the consistency group and then click Remove.
NOTE: You can click the Select all check box to remove all the virtual disks displayed in the
table.
4. Select the Delete all repositories associated with this member virtual disk if you want to delete all
associated repositories that exist for the member virtual disk(s) in the consistency group.
5. Type yes in the text box and then click Delete to delete the member virtual disk(s) from the
consistency group.
The system removes the member virtual disks from the consistency group; they will not be deleted.
Creating A Snapshot Virtual Disk Of A Snapshot Image
You create a snapshot virtual disk to provide host access to a snapshot image within a snapshot group. A
read-write snapshot virtual disk has its own repository that is used to save any subsequent modifications
made by the host application to the base virtual disk without affecting the referenced snapshot image.
The snapshot virtual disk can be designated as either read-only or read-write:
• A read-only snapshot virtual disk provides a host application with READ access to a copy of the data
contained in the snapshot image, but without the ability to modify the snapshot image. A read-only
snapshot virtual disk does not have an associated repository.
• A read-write snapshot virtual disk requires an associated repository to provide the host application
with WRITE access to a copy of the data contained in the snapshot image.
Snapshot Virtual Disk Limitations
• You cannot create a snapshot virtual disk of a Failed base virtual disk.
• Snapshot repositories are fully resizeable. If you have the storage capacity you can increase the size of
the snapshot repository to avoid a repository full message. Conversely, if you find that the snapshot
repository is larger than you need, you can reduce its size to free up space that is needed by other
logical virtual disks.
• If you create a snapshot virtual disk for a snapshot image and that snapshot image creation operation
remains in a Pending state it is due to the following conditions:
– The base virtual disk that contains this snapshot image is a member of an asynchronous remote
replication group.
– The base virtual disk is currently in a synchronizing operation. The snapshot image creation will
complete as soon as the synchronization operation is complete.
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