HP StorageWorks Snapshot XP user guide (T1713-96023, October 2006)

Business Copy XP
Use Business Copy XP to maintain array-internal copies of all user data on the array for d ata on open
systems such as
UNIX and PC servers. Business Copy XP creates a p a ir of P-VOL and S -VOL, both of
which are logical volumes in the same array or in externally attached storage. Pairs that Business Copy
XP creates are called Business Copy XP pairs.
RAID-protecte
d S-VOLs are created within the same a rray as the P-VOL. Use Business Copy XP to create
up to three S-VOLs for a P-VOL. Using Business Copy XP with External Storage XP, you can use external
volumes to create Business Copy XP pairs.
Unlike the Sna
pshot X P pair's S -VOL, all P-VOL data is copied to the Business Copy XP pair's S-VOL.
Therefore, the capacity of the Business Copy XP pair's P-VOL and S-VOL is the same. In addition, Business
Copy XP's copy process takes longer because all P-VO L data is copied to the S-VOL.
As described p
reviously, Business Copy XP requires larger array capacity and the copy process takes
longer compar
ed to Snapshot XP. However, when a failure disables access to one of the pair's volumes,
the array can continue to operate using data stored in the other volume because the same da ta is store d
in the P-VOL and S-VOL. HP recommends using Business Copy XP when data integrity is more impor tant
than copy process speed or array capacity. For more information, see the H P StorageWorks Business
Copy XP user guide for the XP12000/XP10000/SVS200.
HP StorageWorks Snapshot XP user guide
13