Recovery procedures from a target UR primary site failure that occurs before deleting source UR pair "after migration is complete"

Global Active Device for VSP One Block
Version
10.5.x
File Size
25537 KB
Audience
anonymous
Part Number
MK-23VSP1B011-11
ft:lastEdition
2026-06-23

The following table shows the changes in the pair status before and after a failure.

Pair type Pair status before failure Pair status after failure
P-VOL S-VOL P-VOL S-VOL
GAD pair PAIR (Mirror (RL)) PAIR (Mirror (RL)) PAIR(Mirror (RL)) or PSUE (Local)3 － (PSUE(Block)2)
Source UR pair PAIR PAIR PAIR PAIR
Target UR pair PAIR PAIR － (PSUE 2) PAIR1 or PSUE 1,2
Notes:
  1. (VSP One B20 series) The pair status depends on the settings of system option modes (SOMs) 448 and 449.

    (VSP One B85) The pair status depends on the settings of advanced system settings No.15 and No.16.

  2. The status after powering on the target UR primary site.
  3. The status when the I/Os are issued from the servers to the primary site before a failure is recovered.

When recovering from this failure, you must perform the pair operations so that the S-VOL at the target UR secondary site can accept I/Os from the server to continue the I/Os. Perform this failure recovery operations in the target UR environment, and then remove the source UR environment because the system environmental migration for the remote copy function is complete.

  1. Stop I/Os from servers to the storage system at the target UR primary site.
  2. Specify the S-VOL from the target UR secondary site, and then suspend (swap suspend) the UR pair. 
    pairsplit -g oraUR01 -RS -IH4
  3. Resume I/Os from servers to the storage system at the target UR secondary site.
  4. Remove a failure on the storage system at the target UR primary site.
  5. Specify the S-VOL whose virtual LDEV IDs are set, and then forcibly delete the GAD pair. 
    pairsplit -g oraHA00 -RFV -IH3
  6. Delete the source UR pair. 
    pairsplit -g oraUR00 -S -IH1
  7. Specify the P-VOL whose virtual LDEV IDs are deleted, and then forcibly delete the GAD pair. 
    pairsplit -g oraHA00 -SF -IH1
  8. Resynchronize (swap resync) the target UR pair by specifying the S-VOL. 
    pairresync -g oraUR01 -swaps -IH4

    The volume of the target UR pair at the primary site has changed to S-VOL and the volume at the secondary site has changed to P-VOL.

  9. Confirm that the UR pair status has changed to PAIR.
  10. Stop I/Os from servers to the storage system at the target UR secondary site.
  11. Specify the S-VOL from the target UR primary site, and then suspend (swap suspend) the UR pair. 
    pairsplit -g oraUR01 -RS -IH3
  12. Resume I/Os from servers to the storage system at the target UR primary site.
  13. Specify the S-VOL from the target UR primary site, and then resynchronize (swap resync) the UR pair. 
    pairresync -g oraUR01 -swaps -IH3

    The volume of the target UR pair at the primary site has changed to P-VOL and the volume at the secondary site has changed to S-VOL.

  14. Confirm that the UR pair status has changed to PAIR.

    The subsequent section provides how to remove the source UR environment in accordance with the procedure in Removing the source environment.