Splitting A Remote Replication Pair - Huawei OceanStor V3 Series Features Manual

OceanStor V3 Series
Remote Replication Feature Guide for Block
2.
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6.4 Splitting a Remote Replication Pair

If you want a secondary resource to save data on a primary resource at a specific point in
time, maintain a remote replication link, or expand network bandwidth, you must split the
remote replication pair. After a remote replication pair is split, the data written into the
primary resource by the application server will not be synchronized to the secondary resource.
This may cause data inconsistency between the primary resource and secondary resource.
Prerequisites
l
l
Precautions
If the remote replication pair does not complete the initial synchronization, splitting the
remote replication pair will cause data on the secondary resource unavailable. Perform this
operation with caution.
Procedure
Step 1 Log in to DeviceManager.
Issue 06 (2018-01-30)
The Success dialog box is displayed, indicating that the operation succeeded.
Click OK.
The remote replication pair that you want to split is not added to a consistency group.
Based on Pair Running Status of the remote replication pair, determine whether the
remote replication pair can be split, as shown in
Table 6-5 Status requirements for splitting a remote replication
Pair Running
Status
Normal
Split
Interrupted (Link
down)
Interrupted (Link up)
To be recovered
Synchronizing
Invalid
√: Able to operate.
×: Unable to operate.
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Table
Splitting a Synchronous
Remote Replication Pair
√
×
√(Can be performed on the
primary storage system only.)
√
√
√
×
6 Managing Remote Replication
6-5.
Splitting an
Asynchronous Remote
Replication Pair
√
×
√(Can be performed on the
primary storage system only.)
√
√
√
×
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