HP XP P9500 Storage - Manual (Page 8)

Volume pairs (primary volumes and secondary volumes)
A pair consists of the P-VOL and secondary data volume. Each P-VOL can be paired with up to
three S-VOLs. Thus, you can create three pairs using one P-VOL.
During most operations, the P-VOL remains available to the host for I/O operations. Updating the
P-VOL regularly copies the new data, the differential data, to the S-VOL. Because S-VOLs are
updated asynchronously, the P-VOL and S-VOLs may not be identical. S-VOLs become available
for host access only after you split or delete the pair.
NOTE: All updates to the S-VOL only complete when the pair is split. If the pair is deleted updates
that have not been written to the S-VOL will not occur.
Remote Web Console GUI
With the RWC GUI, you:
•
Enable the BC Z license key.
•
Configure the storage system.
•
Perform copy operations.
•
Perform monitoring, maintenance, and troubleshooting.
You perform BC Z operations using the new version of the RWC GUI. You are also able to use
the previous version, if you choose to do so. Procedures describing operations in the previous
version are found in the appendixes.
The RWC GUI communicates with the storage system’s service processor (SVP) over defined TCP/IP
connections. RWC is LAN-attached to the storage system.
RAID Manager, PPRC, Business Continuity Manager and consistency groups
With RAID Manager , PPRC, and BCM you use a command line interface for running most of the
same operations as are performed with RWC. Pair commands are issued directly from the host.
Commands can also be automated using scripts.
Using RAID Manager, PPRC, or BCM, you can specify multiple pairs as a consistency or copy
group. With a consistency (or copy) group, you perform tasks on multiple pairs at the same time.
This also changes the pair status for all the pairs in a group.
8 Business Copy Z overview