HP XP Business Copy Software - Manual (Page 39)

Business Copy XP user guide for the XP10000/XP12000 39
Preparing for BC operations
System requirements
BC operations involve the disk array containing the primary and secondary volumes and the licensed BC
feature enabled on the Command View XP management station or XP Remote Web Console. System
requirements for BC are:
• Disk array hardware, microcode, and software required for BC operations must be installed and
enabled.
• Command View XP management station (user-supplied Windows-based PC) or XP Remote Web
Console.
• BC license key installed.
Preparing for BC operations
To ensure that you and your disk arrays are ready for BC operations, perform the following tasks:
• BC operations affect I/O performance of the disk array because of copy operations to the S-VOLs. If
you have not already done so, consider the relative importance of the disk array’s I/O performance
and the BC backup copies. For example, assigning three S-VOLs to each P-VOL takes more resources
than assigning one or two. You can also use the copy pace option to control the impact of BC initial
copy operations. Using a slower copy pace minimizes the impact of BC operations on I/O
performance, while a faster copy pace produces copies more quickly, but may affect I/O performance.
• If you are using more than one disk array data management feature (such as BC, Continuous Access XP ,
or Cache LUN) at the same time in the same disk array, contact your HP account support representative
to ensure that your disk array is optimized for your configuration of concurrent operations. Each disk
array feature can affect disk array performance and/or operation of other features. For example, BC
and Continuous Access XP operations both involve initial copy and update copy operations to
secondary/remote volumes in addition to host I/O workload.
• Identify the volumes (LUs) you will use for BC operations. For each volume, write down the full SCSI
path (port, target ID (TID), and LUN), whether the volume will be a P-VOL or S-VOL, and the other
volumes in its pair (see Table 16 for a sample). LUN Manager displays this information. Volumes that
will be P-VOLs remain fully accessible to all hosts throughout normal BC operations, but volumes that
will be S-VOLs must be unmounted before being reserved for BC operations.
Table 16 Identifying the volumes for BC operations
CU Port TID:
LUN
L1
P-VOL
Assoc.
L1
S-VOLs
L1
S-VOL
Assoc.
L1
P-VOL
L2
P-VOL
Assoc.
L2
S-VOLs
L2
S-VOL
Assoc.
L2
P-VOL
0 1A 0:00 Yes 1B-0:00,
2A-0:00,
2B-0:00
No — No — No —
0 1A 0:01 Yes 1B-0:01,
2A-0:01,
2B-0:01
No — No — No —
etc.
0 1B 0:00 No — Yes 1A-0:00 Yes 3A-0:00,
3A-0:01
No —
0 1B 0:01 No — Yes 1A-0:01 Yes 3B-0:00,
3B-0:01
No —
etc.
0 2A 0:00 No — Yes 1A-0:00 Yes 4A-0:00,
3B-0:01
No —
0 2A 0:01 No — Yes 1A-0:01 Yes 4B-0:00,
3B-0:01
No —