Dell PowerVault MD3820f - Manual (Page 77)

6. Select Finish.
The ARG table shows the status of the group as Initial Sync.
Figure 63. Initial Sync Status Asynchronous Replication Groups Table and Replicated Pairs Table
Changing Roles
The Change Roles option promotes the current secondary replication group to the primary role and
demotes the current primary replication group to the secondary role. After roles are changed, hosts
mapped to the former primary Virtual Disks in the Asynchronous Replication Groups (ARG) no longer
have write access to the Replicated Virtual Disks. Hosts in the ARG that was promoted to the primary role
now have write access to the Replicated Virtual Disks.
NOTE: If the ARG is not resynchronized, data written to primary Virtual Disks after the last
synchronization is lost and cannot be recovered.
To change roles, do the following:
1. Select the ARG within the Asynchronous Replication Groups window.
2. Click Change Roles command.
a) The Confirm Change dialog box is displayed.
b) The Resynchronize replication group now check box is selected by default. To prevent the
resynchronization, clear the check box.
3. Select the confirmation box.
4. Click OK.
The ARG window shows the role change for the ARG. In the Replicated Pairs window, the primary
and secondary Virtual Disks in the ARG have switched roles.
Suspending Asynchronous Replication
When replication is suspended, the Virtual Disks in the Replicated pairs cannot synchronize data. The
suspend-replication operation must be performed by the storage array in the primary role for the
Asynchronous Replication Group. To suspend replication, do the following:
1. Select the Asynchronous Replication Group from the Asynchronous Replication Groups window.
2. Click Suspend Replication command.
3. Select the confirmation box.
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