System Options; Preparing For Business Continuity Manager, Pprc Use; Business Continuity Manager Requiring A Command Device - HP StorageWorks P9000 - Disk Arrays User Manual

See the HP StorageWorks P9000 Performance for Open and Mainframe Systems User
Guide for more information on settings.
CAUTION:
and T-VOL are in different CLPRs. If you perform Quick Restore, the CLPR of the S-VOL and
the CLPR of the T-VOL will be reversed after Quick Restore.

System options

Business Copy Z provides the following options. To enable Copy Threshold option, call your service
representative. Swap&Freeze and Host I/O Performance option can be set by using Remote Web
Console.
Swap&Freeze. This option alters the behavior of the quick restore operation. With
Swap&Freeze, update copy operations are suppressed when the quick restore is completed
and the pair is in Duplex status. Differential data is not copied to the new T-VOL. You use the
Swap&Freeze option, when you want to remain the T-VOLs of a Business Copy Z pair
unchanged after the quick restore operation.
Host I/O Performance. This option increases I/O performance while suppressing Business
Copy Z copy processing. This results in longer copy time. If there is a Business Copy pair,
host I/O response may not improve. In this case, you should enable the Host I/O Performance
option on both Business Copy and Business Copy Z.
Copy Threshold. This option temporarily stops copy operations when the workload on the
storage system is heavy. This is done to minimize degradation to host I/O performance during
peak periods.
NOTE:
Performance option suppresses copy operations at all times regardless of workload level.
When the Copy Threshold Option is set, the option is effective for all of the following program
product:
◦ Business Copy
Business Copy Z
◦
Compatible FlashCopy
◦
Snapshot
◦
◦ Auto LUN

Preparing for Business Continuity Manager, PPRC use

You can use Business Continuity Manager and PPRC to perform the same Business Copy Z pair
operations. However, they are independent functions and use either one or the other.

Business Continuity Manager requiring a command device

A volume must be assigned as the command device for Business Continuity Manager. For information
on setting up the command device, see the HP StorageWorks P9000 for Business Continuity
Manager User Guide.
The Business Continuity Manager command device must be separate from the command device
used by RAID Manager (RAID Manager) on open systems.
It is recommended that Quick Restore should not be performed when the S-VOL
The Copy Threshold option performs only when workload is heavy; the Host I/O
System options 15