A volume in the COPY or PAIR status cannot be selected as a source volume.
In a 3DC multi-target configuration with Universal Replicator and TrueCopy, if you create a Universal Replicator pair for a delta resync operation, the P-VOL or the S-VOL of the delta resync pair can be used as a source volume. To use the P-VOL or S-VOL as a source volume, make sure that the status of each pair in the 3DC multi-target configuration is as shown in the following tables.
The following figure shows a 3DC multi-target configuration.
The following table shows the pair status when the P-VOL of the Universal Replicator delta resync pair is a source volume.
|
Pair Name |
Status |
|---|---|
|
TrueCopy pair |
PSUS or PAIR |
|
Universal Replicator pair |
Any pair status is acceptable |
|
Universal Replicator pair for delta resync operation |
PJNS or PJES (Mirror status) |
The following table shows the pair status when S-VOL of the Universal Replicator delta resync pair is a source volume.
|
Pair Name |
Status |
|---|---|
|
TrueCopy pair |
Any pair status is acceptable |
|
Universal Replicator pair |
PSUS |
|
Universal Replicator pair for delta resync operation |
SJNS (Mirror status) |
In a 3DC multi-target configuration and a 3DC cascade configuration with three Universal Replicator sites, a volume that two Universal Replicator pairs share cannot be specified as a volume used in Volume Migration. In addition, a volume used in Volume Migration cannot be used as a volume that two Universal Replicator pairs share.