HP StorageWorks XP Remote Web Console Software - Manual (Page 38)

Table 6 Siz Options
Option Type Features Requirement
Swap & Freeze
Swap & Freeze option
suppresses the update
copy. For more information,
see section “ Swap&Freeze
Option ” on page 38.
You must change the storage
system setting to allow the quick
restore operation.
Host I/O Performance
Host I/O Performance option
suppresses the copy operations
by Siz. For more information, see
section “ Host I/O Performance
Option ” on page 39.
—
FCv2 Slower Copy1
FCv2 Slower Copy1 option
suppresses the copy operations
by FlashCopy Mirror V2, and
prioritize the host I/O operations.
For more information, see
section “ FCv2 Slower Copy1
Option ” on page 39.
You need to set FCv2 Slower
Copy2 option invalid.
FCv2 Slower Copy2
FCv2 Slower Copy2 option
suppresses the copy operations by
FlashCopyMirror Version 2, and
prioritize the host I/O operations.
You can suppress more copy
operations of FlashCopy Mirror
V2 by using this option than when
you use FCv2 Slower Copy1
option. For more information,
see section “ FCv2 Slower Copy2
Option ” on page 40.
—
Swap & Freeze Option
The Swap & Freeze option allows the S-VOLs of a Siz pair to remain unchanged after the quick restore
operation. If the quick restore operation is performed on a Siz pair with the Swap & Freeze option, update
copy operations are suppressed, and thus are not performed for pairs in the duplex status after the quick
restore operation. If the quick restore operation is performed without the Swap & Freeze option, the S-VOL
and T-VOL are re-synchronized when update copy operations are performed for pairs in the duplex status.
NOTE:
Make sure that the Swap & Freeze option remains in effect until the pair status becomes duplex after
the quick restore operation. The following figure shows the state of the T-VOL after the quick restore
operation with or without the Swap & Freeze option.
38 Overview of Hitachi ShadowImage for z/OS Operations