After the path is recovered, the remote path is automatically recovered. If
you recover the physical path but the remote path does not recover,
contact Hitachi Data Systems customer support.
2. Resynchronize the pair.
a. Confirm that the S-VOL I/O mode is Local.
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 SSWS
NEVER , 100 2222 - - 0 - - - - L/L
oraHA dev1(R) (CL1-A-0, 0, 0)311111 2222.P-VOL PSUE
NEVER , 100 4444 - - 0 - - - - B/B
b. At the secondary system, resynchronize the pair.
pairresync -g oraHA -swaps -IH1
The volume on the primary system changes to an S-VOL, and the
volume on the secondary system changes to a P-VOL.
c. Confirm that the P-VOL and S-VOL pair statuses change to PAIR
(Mirror (RL)).
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.S-VOL PAIR
NEVER , 100 4444 - - 0 - - - - L/M
oraHA dev1(R) (CL1-C-0, 0, 0)322222 4444.P-VOL PAIR
NEVER , 100 2222 - - 0 - - - - L/M
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.P-VOL PAIR
NEVER , 100 2222 - - 0 - - - - L/M
oraHA dev1(R) (CL1-A-0, 0, 0)311111 2222.S-VOL PAIR
NEVER , 100 4444 - - 0 - - - - L/M
3. Using the alternate path software, resume I/O to the S-VOL (P-VOL
before the failure).
I/O from the server might resume automatically.
4. Reverse the P-VOL and the S-VOL if necessary.
Related topics
• I/O modes on page 1-12
•
Failure locations on page 6-3
• SIMs related to GAD on page 6-6
• Reversing the P-VOL and S-VOL on page 6-51
Pair condition and recovery: primary system failure
The following table shows transitions for pair status and I/O mode, the
volumes accessible from the server, and location of the latest data when you
can no longer use the primary system due to failure.
Disaster recovery of global-active device
6-29
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
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