You can add a new member volume to an existing snapshot
consistency group. When you add a new member volume, you also must
reserve capacity for the member volume.
Before
you begin
The member volume
must be Optimal.
The snapshot consistency
group must have less than the maximum number of allowable volumes
(as defined by your configuration).
Each reserved capacity
volume must have the same Data Assurance (DA) and security settings
as the associated member volume.
About
this task
You can add standard volumes or thin volumes
to the snapshot consistency group. The base volume can reside in either
a pool or volume group.
- Select .
- Select the
Snapshot Consistency Groups tab.
The table appears and displays all the snapshot consistency
groups associated with the storage array.
- Select the
snapshot consistency group you want to modify, and then click Add Members .
The Add Members dialog
box appears.
- Select the
member volume(s) you want to add, and then click Next .
The Reserve Capacity step appears. The Volume Candidate
table displays only the candidates that support the reserved capacity
specified.
- Use the spinner
box to allocate the reserved capacity for the member volume. Do one
of the following actions:
- Accept the
default settings.
Use this recommended option to allocate
the reserved capacity for the member volume with the default settings.
- Allocate
your own reserved capacity settings to meet your data storage needs.
If you change the default reserved capacity setting, click Refresh Candidates to refresh the candidate list for the reserved
capacity you specified.
Allocate the reserved capacity using
the following guidelines.
The default setting
for reserved capacity is 40% of the capacity of the base volume, and
usually this capacity is sufficient.
The capacity needed
varies, depending on the frequency and size of I/O writes to
the volumes and the quantity and duration of snapshot image collection.
- Click Finish to add the member volumes.