Pair Condition And Recovery: Path Failure From The Primary To Secondary System - Hitachi G1000 User Manual

b
.
c
.
3 Using the alternate path software, resume I/O to the S-VOL (I/O might
.
resume automatically).
Related topics
• I/O modes on page 1-12
• Failure locations on page 6-3
• SIMs related to GAD on page 6-6
Pair condition and recovery: path failure from the primary to
secondary system
If the statuses of storage systems in both the primary and secondary sites
are normal, a failure might have occurred in a physical path or switch
between the storage systems.
The following table shows transitions for pair status and I/O mode, the
volumes that are accessible from the server, and the location of the latest
data when you can no longer use any physical path from the primary system
to the secondary system.
6-24
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide
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
oraHA dev1(L)
NEVER , 100 4444 -
oraHA dev1(R)
NEVER , 100 2222 -
At the primary storage system, resynchronize the pair.
pairresync -g oraHA -IH0
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
oraHA dev1(L)
NEVER , 100 4444 -
oraHA dev1(R)
NEVER , 100 2222 -
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
oraHA dev1(L)
NEVER , 100 2222 -
oraHA dev1(R)
NEVER , 100 4444 -
Disaster recovery of global-active device
(CL1-A-0, 0, 0)311111
- 0 - -
(CL1-C-0, 0, 0)322222
- 0 - -
(CL1-A-0, 0, 0)311111
- 0 - -
(CL1-C-0, 0, 0)322222
- 0 - -
(CL1-C-0, 0, 0)322222
- 0 - -
(CL1-A-0, 0, 0)311111
- 0 - -
E-Seq# E-LDEV# R/W
2222.P-VOL PSUE
- - L/L
4444.S-VOL PSUE
- - B/B
E-Seq# E-LDEV# R/W
2222.P-VOL PAIR
- - L/M
4444.S-VOL PAIR
- - L/M
E-Seq# E-LDEV# R/W
4444.S-VOL PAIR
- - L/M
2222.P-VOL PAIR
- - L/M