Dell POWERVAULT MD3600I - Manual (Page 126)

– 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 completes
as soon as the synchronization operation is complete.
1. From the AMW, select the base virtual disk whose data you want to copy.
2. Select a snapshot image of a base virtual disk and then select Copy Services → Snapshot Group → Create.
The Snapshot Group Settings window is displayed.
3. In the Snapshot group name field, enter a unique name (30 character maximum) that best describes the virtual disk
selected for this group. For example, AccountingData.
By default, the snapshot group name is shown in the name text box as:
[base-virtual disk-name] - SG + sequence-number
In this example, SG (snapshot group) is the appended suffix and sequence-number is the chronological number of
the snapshot group relative to the base virtual disk.
For example, if you create the first snapshot group for a base virtual disk called “Accounting”, the default name of
the snapshot group is “Accounting_SG_01”. The default name of the next snapshot group you create based on
“Accounting” is “Accounting_SG_02”. There is a 30-character limit. After you reach this limit, you can no longer
type in the text box. If the base virtual disk is 30 characters, the default name for the group uses the base virtual
disk name truncated enough to add the suffix “SG” and the sequence string.
4. Select Create the first Snapshot Image Now to take the first copy of the associated base virtual disk at the same
time the snapshot group is created.
5. Do one of the following to select how you want to create the snapshot group repository:
– Select Automatic and click Finish to create the snapshot group repository with the default capacity
settings. This option is the recommended one.
– Select Manual and click Next to define the properties for the snapshot group repository; then click Finish to
continue with the snapshot group creation process.
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 and only those who understand physical disk redundancy and
optimal physical disk configurations should use this method. See Creating The Snapshot Group Repository
(Manually) for instructions on how to set the repository parameters.
6. Click Finish.
The system performs the following actions:
– The snapshot group and its properties under the individual virtual disk node for the associated base virtual
disk are displayed in the navigation tree.
– If Create the first Snapshot Image Now was selected, the system takes a copy of the associated base
virtual disk and the Snapshot Image Successfully Created window is displayed.
Creating A Consistency Group Repository (Manually)
During the creation of a consistency group, a consistency group repository is created to store the data for all the
snapshot images contained in the group. A consistency group's repository is created initially with one individual
repository virtual disk.Each virtual disk that belongs to a consistency group is referred to as a member virtual disk. When
you add a virtual disk to a consistency group, the system automatically creates a new snapshot group that corresponds
to this member virtual disk. A consistency group repository must be created for every member virtual disk in the
consistency group to save the data for all the snapshot images contained in the group.
The Manual method is considered advanced and only those who understand physical disk consistency, provisioning,
and optimal physical disk configurations should use this method.
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