Performing Continuous Access Xp Pair Operations - HP xp12000 User Manual

Continuous Access XP pairs still using that path, and you cannot delete a group until you delete all
Continuous Access XP Asynchronous pairs in that group.
1. Delete all Continuous Access XP pairs from MCUs (pairsplit-S, see
volume pairs
Range-Group option to delete all pairs in a group at one time. Verify that the pair status changed to
SMPL for all Continuous Access XP volumes before continuing.
2. Delete Continuous Access XP Async groups from MCUs (see
Group)" on page 81). The RCU automatically deletes a group when all pairs in the group are deleted.
3. Delete RCUs (see
ensure that all RCUs are deleted before continuing.
4. Remove remote copy connections (physical paths). If you are not familiar with the operation of remote
copy hardware components, call HP technical support for assistance.
5. For Fibre Channel interface, reset initiator ports to ordinary targets at MCUs (see
operation" on page 76).

Performing Continuous Access XP pair operations

Before starting Continuous Access XP operations, consider the relative importance of disk array I/O
performance and disaster recovery preparation. As described in
operations and disk array
of MCUs and RCUs. Continuous Access XP provides many options (initial copy options, pair options,
group options, async options) to control impact of Continuous Access XP operations on I/O performance.
These options can be set separately for each pair, Continuous Access XP Async group, and MCU to
provide maximum flexibility. You can select options that minimize impact of Continuous Access XP
operations on disk array performance or options that maximize effectiveness of Continuous Access XP
operations to ensure the best level of backup data integrity. System-level factors (for example, number of
paths) can also affect Continuous Access XP operations and disk array performance (see Table 26).
For Continuous Access XP disaster recovery operations, ensure that RCUs are attached to a host server to
enable sense information reporting and host failover information transferring. If the remote site is
unattended, attach RCUs to a host server at the main site, so the system administrator can monitor
operational condition of RCUs.
To prepare for Continuous Access XP volume pair operations, identify volumes (by port, TID, and LUN
and/or by LDEV ID) for which you want to establish Continuous Access XP remote copy operations.
Identify volumes required for system operations and volumes containing important data to be backed up
(for example, DB log files). Copying these volumes to the remote site enables faster disaster recovery than
maintaining a current version of these files at the remote site. For large databases spanning multiple
volumes, plan to establish a Continuous Access XP Asynchronous consistency group for each database, so
update sequence consistency of the database can be ensured at the remote site.
Start creating Continuous Access XP volume pairs as soon as you have:
Identified volumes (LUs) that will become Continuous Access XP P-VOLs (and S-VOLs).
•
• Ensured that all system and Continuous Access XP requirements are met (see
page 31 and
• Completed hardware and software installation (see
Channel remote copy
• Configured MCUs and RCUs for Continuous Access XP operations (see
for Continuous Access XP
If you will use Continuous Access XP to perform remote copy operations, the Command View XP
management station must be LAN-attached to the MCU of each Continuous Access XP volume pair. You
should also install and attach a Command View XP management station to RCUs at your remote site. If you
will use RAID Manager commands instead of Continuous Access XP, contact your HP account support
representative for information about Continuous Access XP configuration services.
Alternatively, you can access XP Remote Web Console directly on the MCUs and RCUs to manage their
respective disk arrays.
(Pairsplit-S)" on page 102). For Continuous Access XP Async pairs, use the Delete
"Deleting RCUs (Delete
performance" on page 87, remote copy operations can affect I/O performance
"Requirements and restrictions" on page 31).
connections" on page 34).
operations" on page 35).
"Deleting consistency groups (Delete CT
RCU)" on page 71). Check each CU image of each MCU to
"Optimizing Continuous Access XP
"Installing hardware" on page 33 and
Continuous Access XP user guide for the XP12000/XP10000
"Deleting Continuous Access XP
"Port change
"System requirements" on
"Configuring MCUs and RCUs
"Fibre
89