HP XP Continuous Access Software - Manual (Page 340)

340 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
If the pairresync –swaps command fails because the ESCON/FC link is
not yet restored, then the special state (PVOL_PSUE and SVOL_PSUS) is
not changed.
Failback after recovery on Host B
If you stop the application on Host B and restart the application on Host A
after a recovery due to the execution of the pairresync –swaps command
on Host B, then horctakeover does a swap-takeover, even though Host A
cannot communicate with remote Host B.
Delta COPY
Æ PAIR
P-VOL
Host C Host A Host B
PAIR
PSUE
PAIR
PAIR
PAIR
SSUS
SSUS
SSUS
SSUS
SSUS
S-VOL
Host C Host A Host B
COPY
COPY
COPY
COPY
COPY COPY
COPY
COPY
COPY
COPY
pairresync -swaps
on HostB only
S-VOL P-VOL
Host C Host A Host B
PAIR
PAIR
PAIR
PAIR
PAIR PAIR
PAIR
PAIR
PAIR
PAIR
S-VOL P-VOL
Host C Host A Host B
PAIR
PAIR
PAIR
PAIR
PAIR PAIR
PAIR
PAIR
PAIR
PAIR
horctakeover
on Host A
S-VOL P-VOL
Host C Host A Host B
PAIR
PAIR
PAIR
PAIR
PAIR PAIR
PAIR
PAIR
PAIR
PAIR
P-VOL S-VOL