Dell PowerVault ME4 Series Storage System Administrator’s Guide

Modify a replication set

1. In the Replications topic, select the replication set in the Replications Sets table that you want to modify.
2. Select Action > Modify Replication Set. The Modify Replication Set panel opens.
3. Enter a new name for the replication set. The name is case sensitive and can have a maximum of 32 bytes. It cannot already exist in the system, include leading or trailing spaces, or include the following: " , < \
4. Specify the Queue Policy action to take when a replication is running and a new replication is requested.
   • Discard. Discard the new replication request.
   • Queue Latest. Take a snapshot of the primary volume and queue the new replication request. If the queue contained an older replication request, discard that older request. A maximum of one replication can be queued. If the queue policy is set to Queue Latest and a replication is running and another is queued, you cannot change the queue policy to Discard. You must manually remove the queued replication before you can change the policy.
5. Optional: Select the Secondary Volume Snapshot History check box to keep a snapshot history on the secondary system for the secondary volume.
   • Set the Retention Count to modify the number of snapshots to retain. Its value must be greater than the number of existing snapshots in the replication set, regardless of whether snapshot history is enabled.
     NOTE:If you reduce the snapshot count setting to a value less than the current number of snapshots, the operation will fail. Thus, you must manually delete the excess snapshots before reducing the snapshot count setting. If you change this parameter while a replication is running, for the current replication it will affect only the secondary system. In this case the value can only be increased, so you might have one less expected snapshot on the primary system than on the secondary system.
   • Set the Snapshot Basename to modify the snapshot name. The name is case sensitive and can have a maximum of 26 bytes. It cannot already exist in the system or include the following characters: " , < \
     NOTE:If you change the Snapshot Basename while a replication is running, for the current replication it will affect the name of the snapshot on the secondary system. For that replication only, the names of the snapshots on the primary and secondary systems will differ.
   • Set the Retention Priority to specify the snapshot retention priority.
   • Optional: Check Primary Volume Snapshot History to keep a snapshot history for the primary volume on the primary system.
6. Click OK. The name of the replication set is updated in the Replications Sets table.