HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

• When you issue the QUERY command with the PATH option to the S-VOL using ICKDSF, the
command might be rejected. If this happens, you can check path status using the CQUERY
command or Remote Web Console.
• When using 2105 or 2107 CU emulation type for the MCU when the host is online to the
S-VOL, running the CESTPAIR command to create a Cnt Ac-S Z pair requires
ONLINSEC(YES). The operation fails if you do not use ONLINSEC or if you use
ONLINSEC(NO).
Note that you cannot check whether a host system is online if the RCU does not support 2105
or 2107 CU emulation types. In this case, you can still run the CESTPAIR command with
ONLINSEC(YES)—if the MCU is XP P9500 and supports 2105 or 2107 CU emulation type.
• If the PPRCOPY SUSPEND command issued to a pair in Pending status is rejected, suspend
the pair using Remote Web Console.
WARNING! The CSUSPEND command QUIESCE option is disabled by APARs
OW15247/48. Make sure to check with your HP account team before using this command
and option on XP P9500. If the command and option is issued to certain volumes (for example,
active SPOOL, PAGE, or CATALOG datasets, active SYSRES volume), the attached host may
enter a deadlock condition, requiring storage control IML to correct the condition.
See APARs OW15247 or 48 and the latest IBM PPRC documentation for detailed information.
• Preserve Mirror FlashCopy function with Compatible FlashCopy: When you create Compatible
FlashCopy Preserve Mirror relationships in COPY mode, both copies are not synchronized.
If you issue Withdraw during the copy operation, both copies of the relationship are
suspended. Therefore, data consistency between the P-VOL and S-VOL is not ensured even
though the Cnt Ac-S Z pair is in DUPLEX mode. This status can be confirmed by the CQUERY
command.
The following figure provides an example of when CQUERY is issued to the Cnt Ac-S Z P-VOL
using the VOLUME parameter. The message, PAIR WAS THE TARGET OF A WITHDRAWN
PRESERVE MIRROR RELATION, is displayed. To release this status, delete the Cnt Ac-S Z pair.
For details about the Preserve Mirror FlashCopy function, see the HP XP P9000 for Compatible
FlashCopy Mirroring User Guide.
Requirements, restrictions, and notes 113