Splitting a Remote Replication Pair

This section describes how to split a remote replication pair if you want to enable the secondary resource to save the data of the primary resource at a specific point in time, interrupt the remote replication link for maintenance, or expand the network bandwidth. After a remote replication pair is split, data written to the primary resource by an application server will not be synchronized to the secondary resource. This will cause data inconsistency between the primary and secondary resources.

Prerequisites

Running Status of the remote replication pair supports splitting. Table 1 describes in which status a remote replication pair can be split.

**Table 1** Status requirements for splitting a remote replication pair
Running Status of a Remote Replication Pair	Splitting Supported or Not
Normal	√
Split	√
Interrupted (link down)	√ (can be performed only on the primary storage system.)
Interrupted (link up)	√
To be recovered	√
Synchronizing	√
Invalid	×
√: Supported ×: Not supported

Precautions

If the initial synchronization of a remote replication pair is not completed, splitting the remote replication pair will cause the secondary resource data to be unavailable. Therefore, exercise caution when performing this operation.

Procedure

Choose Data Protection > Protection Entity > Dtree > Remote Replication Pair.
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 Split.

You can also click More on the right of a desired remote replication pair and select Split.
Confirm your operation as prompted.