HP StorageWorks XP Remote Web Console Software - Manual (Page 29)

Copy Threshold Option
If the load of storage system increases, host server I/O performance (response) may be degraded. If
Business Copy performs copy operations when the load of the storage system is heavy, it is more likely
that host server I/O performance (response) may be degraded. The Copy Threshold option temporarily
stops Business Copy copy operations when the load of the storage system is heavy. If you set this option
in effect, you can minimize the degradation of host I/O performance.
Business Copy has another option called the Host I/O Performance option, which maintains host I/O
performance (response). The Host I/O Performance option suppresses Business Copy copy operations
regardless of the status of the storage system.
For information about setting the Host I/O Performance option, see
“ Host I/O Performance Option ” on page 28. For information about setting the Copy Threshold
option, call HP technical support.
Note: Copy operations that are stopped by the Copy Threshold option will resume when the load of
the storage system becomes light. If this option is in effect, not only Business Copy copy operations but
also the copy operations of the following program products will stop when the load of the storage
system is heavy.
• ShadowImage for Mainframe
• HP StorageWorks XP for FlashCopy Mirroring Software Version 1
• Compatible FlashCopy Version 2
• XP Snapshot
• HP StorageWorks XP Auto LUN Software
Interoperability with Other Products and Functions
Business Copy supports concurrent operations with the following data management functions:
• Open Volume Management (see “ Open Volume Management ” on page 29)
• Cache Residency Manager (see “ Cache Residency Manager ” on page 30)
• LUN Manager (see “ Cache Residency Manager ” on page 30)
• Data Retention Utility (see “ Data Retention Utility ” on page 30)
• Auto LUN (see “ Auto LUN ” on page 31)
• External Storage (see “ External Storage ” on page 31)
• Continuous Access (see “ Continuous Access ” on page 31 and
“ Continuous Access and Continuous Access Journal ” on page 36)
• HP StorageWorks XP Continuous Access Journal Soft­
ware (see “ Continuous Access Journal ” on page 34 and
“ Continuous Access and Continuous Access Journal ” on page 36)
• HP StorageWorks XP Thin Provisioning Software (see “ XP Thin Provisioning ” on page 37)
• VERITAS NetBackup DataCenter (see “ VERITAS NetBackup DataCenter ” on page 38)
Open Volume Management
Virtual LUN volumes can be assigned to Business Copy pairs, provided that the S-VOL has the same
capacity as the P-VOL. If you need to perform Open Volume Management operations on an existing
Business Copy P-VOL or S-VOL, you must delete the pair first to return the volume to SMPL status.
LUSE volumes can be assigned to Business Copy pairs, provided that the P-VOL and S-VOL have the
same LU type and the same number of LDEVs (same size). If you need to perform LUSE operations on an
existing Business Copy P-VOL or S-VOL, you must delete the pair first to return the volume to SMPL status.
XP24000 Business Copy Software User's Guide 29