8. Confirm that the pair status of the P-VOLs of the GAD pairs is
PSUS(Block) and that the pair status of the S-VOLs is SSWS(Local).
pairdisplay -g oraHA -fcxe -IH1
9. Wait for more than 5 minutes after completing step 4, and then
resynchronize the GAD pairs from the secondary storage system by
reversing the primary and secondary volumes (swap resync).
pairresync -g oraHA -swaps -IH1
10. Confirm that the pair status of the P-VOls and S-VOLs of the GAD pairs
has changed to PAIR (Mirror (RL)).
pairdisplay -g oraHA -fcxe -IH1
11. Using the alternate path software, resume I/O from the servers to the
storage system at the primary site.
12. If necessary, reverse the primary and secondary volumes.
Planned power off/on of the primary and secondary storage
systems
Powering off the primary and secondary storage systems
1. Stop server I/O to the primary and secondary storage systems.
2. On the primary storage system, suspend the GAD pairs by specifying the
primary volume.
pairsplit -g oraHA -r -IH0
3. Confirm that the pair status of the P-VOLs of the GAD pairs has changed
to PSUS(Local) and that the pair status of the S-VOLs has changed to
SSUS(Block).
pairdisplay -g oraHA -fcxe -IH0
4. Power off the primary and secondary storage systems.
Powering on the primary and secondary storage systems
1. Power on the primary and secondary storage systems.
2. Confirm that the primary and secondary storage systems and the external
storage system for the quorum disks do not have any blocked parts.
If any parts are blocked, recover them.
3. Check for SIMs about path blockage, and delete the SIMs.
4. Confirm that the pair status of the P-VOLs of the GAD pairs is PSUS(Local)
and that the pair status of the S-VOLs is SSUS(Block).
pairdisplay -g oraHA -fcxe -IH0
5. On the primary storage system, resynchronize the GAD pairs by
specifying the primary volume.
pairresync -g oraHA -IH0
6. Confirm that the pair status of the P-VOLs and S-VOLs of the GAD pairs
has changed to PAIR (Mirror (RL)).
7-6
Planned outage of global-active device storage systems
Hitachi Virtual Storage Platform G1000 Global-Active Device User Guide