•
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 the customizable settings for the snapshot group repository. The Manual
method is considered advanced and only those who understand physical disk consistency 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 .
Manually creating a consistency group repository
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.
Keep these guidelines in mind when you name a consistency group:
•
There is a minimum required capacity for a consistency group repository (depending on your configuration).
•
When you define the capacity requirements for a repository, keep in mind any future requirements that you might have for other virtual
disks in this disk group or disk pool. Make sure that you have enough capacity to meet your data storage needs, but you do not over
allocate because you can quickly use up all the storage in your storage array.
•
The list of repository candidates can contain both new and existing repository virtual disks. Existing repository virtual disks are left on
the storage array by default when you delete a consistency group. Existing repository virtual disks are placed at the top of the list. The
benefit to reusing an existing repository virtual disk is that you can avoid the initialization process that occurs when you create a new
one.
To create a consistency group repository:
1
From the AMW, select the
Storage & Copy Services
tab.
2
Select
Copy Services→ Consistency Group→ Create.
The
Consistency Group Settings
window is displayed.
3
Select
Manual
and click
Next
to customize the repository candidate settings for the consistency group.
The
Consistency Group Repository Settings - Manual
window is displayed.
4
Select how you want to filter the repository candidates for each member virtual disk in the consistency group, based on either a
percentage of the base virtual disk capacity or by preferred capacity.
The best repository candidate for each member virtual disk based on the selections you made is displayed.
5
Select
Edit individual repository candidates
if you want to edit repository candidates for the member virtual disks.
6
Select the repository, from the
Repository candidates
table, that you want to use for each member virtual disk in the consistency
group.
NOTE:
Select a repository candidate that is closest to the capacity you specified.
•
The
Repository candidates
table shows both new and existing repositories that are capable of being used for each member virtual
disk in the consistency group based on the value you specified for percentage or the value you specified for preferred capacity.
•
By default, the system displays the repositories for each member virtual disk of the consistency group using a value of 20% of the
member virtual disk’s capacity. It filters out undersized repository candidates, and those with different Data Service (DS)
Premium feature—Snapshot Virtual Disk
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