2. Resynchronize the pair.
Related topics
• Pair condition before failure on page 6-7
Recovery procedure for GAD pair suspension due to other failures
A GAD pair might be suspended due to a failure other than those described in
this chapter. Use the following procedure to recover a suspended pair from
other types of failure.
If you are not able to restore the GAD volumes using this procedure, contact
Hitachi Data Systems customer support.
1. Recover from the failure.
a. Verify that a failure, such as a suspended GAD pair, has occurred, for
example, by checking for SIMs issued by the primary or secondary
storage system.
b. When a failure has occurred, identify the failure and perform
troubleshooting according to the failure type to remove the cause of
the failure.
2. Resynchronize the GAD pair.
a. Check the I/O mode of the P-VOL and the S-VOL of the suspended
GAD pair.
pairdisplay -g oraHA -fxce -IH0
Group PairVol(L/R) (Port#,TID, LU),Seq#,LDEV#.P/S,Status,
Fence, %,P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W
oraHA dev1(L) (CL1-A-0, 0, 0)311111 2222.P-VOL PSUE
NEVER , 100 4444 - - 0 - - - - L/L
oraHA dev1(R) (CL1-C-0, 0, 0)322222 4444.S-VOL PSUE
NEVER , 100 2222 - - 0 - - - - B/B
pairdisplay -g oraHA -fxce -IH1
Group PairVol(L/R) (Port#,TID, LU),Seq#,LDEV#.P/S,Status,
Fence, %,P-LDEV# M CTG JID AP EM E-Seq# E-LDEV# R/W
oraHA dev1(L) (CL1-C-0, 0, 0)322222 4444.S-VOL PSUE
NEVER , 100 2222 - - 0 - - - - B/B
oraHA dev1(R) (CL1-A-0, 0, 0)311111 2222.P-VOL PSUE
NEVER , 100 4444 - - 0 - - - - L/L
b. If the I/O mode of the P-VOL is Local, resynchronize the GAD pair at
the primary storage system.
pairresync -g oraHA -IH0
c. If the I/O mode of the S-VOL is Local, resynchronize the GAD pair at
the secondary storage system.
pairresync -g oraHA -swaps -IH1
The volume in the primary storage system changes to an S-VOL, and
the volume in the secondary storage system changes to a P-VOL.
d. Confirm that the pair status of the P-VOL and the S-VOL of the GAD
pair has changed to PAIR (Mirror (RL)).
Disaster recovery of global-active device
6-47
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
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