HP XP RAID Manager Software - Manual (Page 173)

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–q Terminates interactive mode and exits this command.
–restore (BC/SnapShot only) (Optional) Copies differential data
from the secondary volume to the primary volume.
(The S-VOL must not be mounted on any host while
this command is executing.)
If the –restore option is not specified, the P-VOL is
copied to the S-VOL. If the –restore option is used, the
P-VOL must not be host mounted while the command
is executing. If the target volume is currently under
maintenance, this command cannot execute copy
rejection in case of trouble.
If mode 80 is turned ON at the SVP, this option takes
time to complete the S-VOL to P-VOL copy
(pairevtwait will signal its completion). However, at
completion, the P-VOL and S-VOL LUNs will still
point to the same LDEVs (physical disks) as before.
If mode 80 is turned OFF at the SVP, this option takes
virtually no time (pairevtwait still signals completion)
because the P-VOL LUN will now be associated with
the LDEVs that used to be associated with the S-VOL
(and vice versa). This allows virtually immediate
P-VOL access while it continues to copy to the S-VOL
in the background. To avoid noticing a performance
change after using this option, the P-VOL and S-VOL
should use the same RAID type and the same speed
disks (for example, 10k RPM).
–swap [s|p] (CA only) The –swaps option is executed from the
S-VOL when there is no host on the P-VOL side to
help. A remote host must be connected to the S-VOL.
Typically executed in PSUS (SSWS) state (after a
horctakeover
) to facilitate fast failback without
requiring a full copy.
Unlike –swaps, –swapp requires the cooperation of
hosts at both sides. It is the equivalent of –swaps,
executed from the original P-VOL side.