After the initial synchronization of a remote replication pair, if an application server writes data to the primary resource or you need to split the pair, data inconsistency between the primary and secondary resources will occur. This section describes how to synchronize the remote replication pair to ensure data consistency between the primary and secondary resources.
Prerequisites
- Secondary resource protection has been enabled.
- Running Status of the remote replication pair supports synchronization. Table 1 describes in which status a remote replication pair can be synchronized.
Table 1 Status requirements for synchronizing a remote replication pair Running Status of a Remote Replication Pair
Synchronization Supported or Not
Normal
√
Split
√
Interrupted (link down)
×
Interrupted (link up)
√
The synchronization fails in some scenarios, for example, Running Status of a pair is Interrupted (the link is normal) and the storage pool is faulty.
To be recovered
√
Synchronizing
×
Invalid
×
√: Supported
×: Not supported
Procedure
- Choose .
- Select a desired account from the Account drop-down list in the upper left corner.
- Select one or more desired remote replication pairs and click Sync.
You can also click More on the right of a desired remote replication pair and select Sync.
- Confirm your operation as prompted.