Huawei OceanStor V3 Series Features Manual page 105

OceanStor V3 Series
Remote Replication Feature Guide for Block
5.
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After the production center is recovered, perform the following operations to switch the
services back to the production center if asynchronous remote replication is configured:
1.
Issue 06 (2018-01-30)
NOTE
This operation synchronizes data from the DR center to the production center. Before performing this
operation, ensure that data in the production center can be overwritten.
After data synchronization is complete, delete the mapping between the secondary host
and the storage system.
NOTE
During this operation, hosts in the DR center cannot be accessed. Before performing this operation,
ensure that host services in the DR center have been stopped.
Perform a primary/secondary switchover for the remote replication.
NOTE
Before the switchover: the production center is the secondary site and the DR center is the primary site.
After the switchover: the production center is the primary site and the DR center is the secondary site.
Run services on the production host.
Check whether the remote replication pair or consistency group is in the split state. If
yes, go to the next step. If no, perform the splitting before go to the next step.
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