HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

3. Perform the planned outage of the remote systems as described in “Planned outage of the
remote system or data path” (page 87).
4. Power on the remote systems. Make sure that they are fully operational and ready to
resynchronize operations before powering on the main system.
5. Power on the main system, and make sure it is ready to resynchronize operations. If you
suspend any pairs in step 2, you can also resynchronize (Resume Pair) those pairs now.
Miscellaneous maintenance
The following topics provide miscellaneous maintenance information and procedures.
ICKDSF maintenance
A pair must be suspended before performing ICKDSF maintenance on the P-VOL. Write operations
to the P-VOL that specify normal authorization are duplicated on the S-VOL. Write operations with
diagnostic or device support authorization (for example, ICKDSF) are completed at the P-VOL only.
88 Monitoring and maintenance