HP XP Business Copy Software - Manual (Page 11)

Business Copy XP user guide for the XP128/XP1024 11
1 Business Copy XP (BC) for the XP128/XP1024
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 with HP StorageWorks Continuous Access XP operations to provide
additional remote copies of BC volumes. BC also supports the disk array’s CVS and Cache LUN XP
features, ensuring that BC operations can duplicate all user data. See ” Combining BC with other data
management operations ” on page 33 for further information on combining BC with other data
management features.
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) ” on page 12