When the remote device needs to take over services, disable protection for secondary resources to make resources readable and writable. Therefore, write data services can be provided for upper-layer services. At this time, roles of the primary and secondary directories in a remote replication pair stay unchanged but primary resources cannot synchronize data to secondary resources.
Running Status of a Remote Replication Pair |
Secondary Resource Data Status |
Protection Disablement Supported or Not |
|---|---|---|
Normal |
Any status |
× |
Split |
Consistent |
√ |
Interrupted (link down) |
Consistent |
√ (can be performed only on the secondary storage system.) |
Interrupted (link up) |
Consistent |
√ (can be performed on the primary or secondary storage system.) |
To be recovered |
Any status |
× |
Synchronizing |
Any status |
× |
Invalid |
Any status |
× |
√: Supported ×: Not supported |
||