HP XP Business Copy Software - Manual (Page 9)

1 Business Copy XP (BC) for the Array
HP StorageWorks Business Copy XP (BC) maintains internal copies of user data on disk arrays for
purposes such as data backup or duplication. Duplicate volumes are created on the same disk array
as the primary volume at hardware speeds. BC is used for UNIX and PC server data, and can provide
up to nine duplicates of one primary volume.
This chapter provides instructions for performing BC operations using Command View XP or XP Remote
Web Console.
NOTE:
See the HP StorageWorks Command View XP Advanced Edition Device Manager Web Client user
guide for instructions on accessing Business Copy from Command View XP Advanced Edition.
BC operations are nondisruptive and allow the primary (main) volume of each volume pair to remain
online to all hosts for read and write I/O operations.
After establishing operations, BC operations continue unattended to provide asynchronous internal
data backup. Usability is further enhanced through a resynchronization capability that reduces data
duplication requirements and backup time, thereby increasing user productivity. BC also supports
reverse resynchronization.
You can perform BC operations in conjunction with HP StorageWorks Continuous Access XP operations
to provide additional remote copies of BC volumes. BC also supports the disk array's custom volume
size (CVS) and Cache LUN features, ensuring that BC operations can duplicate all user data. See
Combining BC with other data management operations for further information on combining BC with
other data management features.
You can also perform BC operations with External Storage XP operations to create pairs with external
volumes.
Overview of BC operations
BC is a storage-based hardware solution for duplicating logical volumes that reduces backup time
and provides point-in-time backup. BC primary volumes (P-VOLs) contain original data; BC secondary
volumes (S-VOLs) contain duplicate data. You can use the BC cascaded volume function to make up
to nine copies of each P-VOL. Because each S-VOL is paired with its P-VOL independently, each S-VOL
can be maintained as an independent copy set that can be split, resynchronized, and deleted separately
from other S-VOLs assigned to the same P-VOL.
BC components
BC operations on the Command View XP management station or XP Remote Web Console involve
primary and secondary volumes in the disk array.
Figure 1 shows a typical BC configuration. BC
system components are:
• BC volume pairs (P-VOLs and S-VOLs)
XP Business Copy User Guide 9