Hardware manual

Group Administration Volume replication
12–26
Because a template volume is read-only and cannot be failed back from the secondary group, keeping the
failback snapshot is not necessary for this type of volume.
5. In the Configure Volume Replication – Summary wind
ow, review the information and click Finish if the
configuration is correct. Click
Back to make changes.
When you complete the volume replication
configuration, you can choose to create a replica. You can also choose
to perform the replication by using manual transfer replication. See About replicas on
page 12-1.
Modifying volume replication configuration settings
You can modify the settings described in Volume replication configuration attributes. Changes are not applied until
the next replication.
To modify the settings, click
Volumes, then expand Volumes, then select the volume, then click Modify
replication settings
, and then click the General tab.
In the Modify Volume Replication Settings – General dialog box,
you can change:
• Replication partner. The replicas remain
on the original partner. The next replication to the new partner
transfers the full volume contents.
• Replica reserve percentage.
Note: The space
currently used to store replicas represents the lower limit for replica reserve. You cannot
decrease replica reserve below this limit.
• Local replication reserve percentage.
• Borrow space setting.
To change the failback snapshot setting, cl
ick the
Advanced tab. In the Modify Volume Replication Settings –
Advanced dialog box, select or deselect
Keep failback snapshot.
Note: If you select
Keep failback snapshot, you must create a replica to establish the failback snapshot.
Configuring a volume collection for replication
You can simultaneously replicate data in related volumes by replicating the volume collection. The resulting set of
replicas is called a replica collection.
Note: To replicate a volume collection, you must configure all the volumes i
n the collection to replicate to the
same partner. See Configuring a volume for replication on page 1
2-25.
1. Click
Volumes, then expand Volume Collections, then select the collection, and then click Configure
replication.
2. In the Volume Collection – Modify Replication Settings dialog box:
• Select the replication partner for the volume collection.
•
Make sure each volume is configured to replicate to the pa
rtner selected above.
If a volume is not configured for replication, click the
not replicated link and configure the volume.