Dell PowerVault MD3820f - Manual (Page 137)

• If you attempt to create a snapshot image and either of the following conditions below are present,
the creation may remain in Pending state:
– The base virtual disk that contains this snapshot image is a member of an Remote Replication
group.
– The base virtual disk is currently synchronizing. When synchronization is complete, the snapshot
image creation will complete.
• You cannot create a snapshot image on a failed virtual disk or on a snapshot group designated as
Reserved.
Creating A Snapshot Image
You can create a snapshot image by either selecting a base virtual disk or by selecting an existing
snapshot group.
To create a snapshot image from an existing base virtual disk:
1. From the AMW, select the base virtual disk you are copying and select Copy Services → Snapshot
Image → Create.
The Select or Create a Snapshot Group window is displayed.
2. Do one of the following:
– If snapshot groups already exist on the base virtual disk or if the base virtual disk already has the
maximum number of snapshot groups, the An Existing Snapshot Group radio button is selected
by default. Go to step 3.
– If the base virtual disk does not contain any snapshot groups, the following message is displayed:
There are no existing snapshot groups on this base virtual disk. Use the
option below to create a new snapshot group. You must create a snapshot group on
the base virtual disk before you can proceed. Go to step 4.
3. If you want to create a snapshot image on an existing snapshot group:
a) Select a snapshot group from the existing snapshot group table.
NOTE: Ensure that you select a snapshot group that has not reached its maximum limit of
snapshot images.
b) Click Finish to automatically complete the snapshot image creation process and then go to step
5.
4. If you want to create a new snapshot group for the snapshot image, you must select how you wish
to create the snapshot group repository. Do one of the following:
– Select Automatic and click Finish to create the snapshot group repository with the default
capacity settings. This is the recommended option. Go to step 5.
– Select Manual and click Next to define the properties for the snapshot group repository. Then
click Finish to continue with the snapshot image creation process. Go to step 5.
NOTE: Use this option if you want to specify all of the customizable settings for the
snapshot group repository. The Manual method is considered advanced. It is recommended
that you fully understand physical disk consistency and optimal physical disk configurations
before proceeding with the Manual method.
NOTE: Make sure you have either existing repositories, enough free capacity nodes, or
available unconfigured capacity for the storage array on which you are creating the
snapshot group repository, otherwise you cannot create the repository and an error
message is displayed.
5. Click Finish.
The system takes a copy of the associated base virtual disk. The snapshot image and its properties
are displayed in the navigation tree for the associated base virtual disk.
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