HP StorageWorks XP Remote Web Console Software - Manual (Page 46)

If the Remote Web Console software is not installed, contact your HP account team for further
information on TrueCopy for Mainframe configuration services.
By using Remote Copy Function Switch, you can set the following option with PPRC command:
CFW data = only M-VOL. To use this function, contact your HP service representative.
P/DAS Support
TrueCopy for Mainframe Sync supports the IBM P/DAS host software function. P/DAS allows you
to relocate or migrate data by redirecting all application I/Os from the M-VOL of a TrueCopy for
Mainframe pair to the R-VOL without interrupting access to the data. See the following IBM
publications for important information on the requirements and procedures for P/DAS operations:
Planning for IBM Remote Copy (SG24-2595), Advanced Copy Services (SC35-0355), DFSMS
MVS V1 Remote Copy Guide and Reference (SC35-0169).
TrueCopy for Mainframe Asynchronous does not support P/DAS SWAP.
Restrictions:
•
P/DAS does not support CFW operations. You must stop CFW applications before performing
P/DAS operations on TrueCopy for Mainframe volumes.
•
P/DAS through channel extenders is not supported.
•
P/DAS swap option #2 (switch pair & swap) is supported for P/DAS between the
XP24000/XP20000 Disk Array, XP12000/XP10000 Disk Array, and XP1024/XP128 Disk
Array.
Contact your HP service representative for the latest information on P/DAS support.
GDPS Support
TrueCopy for Mainframe provides remote copy support for IBM's Geographically Dispersed Parallel
Sysplex (GDPS) facility. GDPS is an IBM service offering for mirroring data and balancing workload
on storage systems spread across two or more sites up to 40 km (~20 miles) apart. With this
support, users who are running IBM Parallel Sysplex systems can take advantage of the XP disk
array's suite of remote copy options for data availability.
GDPS operations feature automatic control of groups of PPRC-managed volumes using host-based
scripts and PPRC commands (for example, CGROUP (FREEZE/RUN)). GDPS support may have
additional installation requirements for the HP disk array TrueCopy for Mainframe MCUs and
RCUs, depending on HP disk array microcode levels and program product versions. Check the
following items with your HP representative:
•
System option modes (for example, 104).
IBM Mode 104 must be ON for 3990 controller emulation (not valid for 2105 and 2107
emulation).
For further information on HP disk array system option modes related to TrueCopy for
Mainframe operations, see
“XP Disk Array Modes for TrueCopy for Mainframe” (page 12) .
Mode 104 must be set before any TrueCopy for Mainframe pairs are established in a GDPS
environment. If TrueCopy for Mainframe pairs have already been established, you must release
all pairs and logical paths (CDELPAIR, CDELPATH), change the SSIDs and mode settings on the
MCUs and RCUs, and then re-establish the paths and pairs (CESTPATH, CESTPAIR).
The HP disk array does not support controlling the FREEZE Option through the CESTPATH LINK
parameter. The FREEZE Option must be controlled using the CGROUP option of CESTPATH. Make
changes as needed to the CESTPATH LINK definitions in your GDPS configuration files or
configuration database.
For further information on GDPS, see the following IBM publications: Geographically Dispersed
Parallel Sysplex: the S/390 Multi-site Application Availability Solution, Executive Summary
46 About TrueCopy for Mainframe Operations