HP XP7 Storage - Manual (Page 147)

Figure 20 Remote command devices in a delta resync configuration
When mapping to remote command devices on each site is complete, you must assign mirror IDs
to the remote command devices. This is required to enable communication for delta resync
operations.
Assigning mirrors to remote command devices
You assign the mirror IDs used by the configuration’s journals to the remote command devices.
This enables Cnt Ac-J Z control information regarding the delta resync to be transferred and then
read at the remote sites. This is necessary for the delta resync operation.
Prerequisite information
•
To assign a mirror to a remote command device, the mirror’s status must be one of the following:
Initial, Active, Halt, Stopped, Hold, Holding, or Holding(Failure)
To use a mirror in Initial status, it must have mirror ID 0.
•
Perform this operation for each journal.
•
In a journal, you can assign multiple mirrors to two remote command devices in one operation.
Procedure 48 To assign mirror IDs to remote command devices
1. In the Storage System tree, click Replication > Remote Replication.
2. Select the Mirrors tab, then select the mirror to which you will assign the remote command
device.
3. From the Actions menu, click Remote Replication > Assign Remote Command Devices.
4. In the Assign Remote Command Devices dialog box, assign mirror IDs to remote command
devices as follows.
Delta resync configuration 147