You can share SI P-VOLs and S-VOLs with UR P-VOLs and S-VOLs that are in 3DC configurations with three UR sites.
The following figures show examples of sharing SI and UR volumes in the following configurations:
- 3DC multi-target configuration
- 3DC multi-target configuration using delta resync
- 3DC cascade configuration
- 3DC cascade configuration using delta resync
(1) When a UR P-VOL is shared with an SI P-VOL in a 3DC multi-target configuration
(2) When a UR P-VOL is shared with an SI S-VOL in a 3DC multi-target configuration
(3) When a UR S-VOL is shared with an SI P-VOL in a 3DC multi-target configuration
(4) When a UR P-VOL is shared with an SI P-VOL on the primary storage system in a 3DC cascade configuration
(5) When a UR P-VOL is shared with an SI S-VOL on the primary storage system in a 3DC cascade configuration
(6) When a UR S-VOL is shared with an SI P-VOL on the intermediate storage system in a 3DC cascade configuration
(7) When a UR S-VOL is shared with an SI P-VOL on the secondary storage system in a 3DC cascade configuration
(8) When each UR volume is shared with an SI P-VOL in a 3DC multi-target configuration using delta resync
(9) When a UR P-VOL is shared with an SI S-VOL, and a UR S-VOL is shared with an SI P-VOL in a 3DC multi-target configuration using delta resync
(10) When each UR volume is shared with an SI P-VOL in a 3DC cascade configuration using delta resync
(11) When a UR P-VOL is shared with an SI S-VOL, and a UR S-VOL is shared with an SI P-VOL in a 3DC cascade configuration using delta resync
