HP XP RAID Manager Software - Manual (Page 174)

174 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
For both –swaps and –swapp, the delta data from the
original S-VOL becomes dominant and is copied to the
original P-VOL, then the P-VOL/S-VOL designations
are swapped.
The application can continue to run at the remote
failover site during this operation. At completion, the
remote failover site will own the P-VOL. When
desired, a very fast horctakeover will allow a fast
failback of the application from the recovery site to the
original site.
The following figure describes the –swap[s|p]
operation. The left side of the diagram shows T0 (time
zero) for both the P-VOL and S-VOL, before command
execution. The right side shows T1, after command
execution.
–z Makes this command enter interactive mode.
–zx (Not for use with MPE/iX or OpenVMS) Prevents using
Returned Values
P-VOL S-VOL
Altered Data
R or R/W R/W
NEW_SVOL NEW_PVOL
R/W
R
pairresync -swaps on SVOL
or
pairresync -swapp on PVOL
T0
T1 T0
→ T1 situation
T1 T0