HP StorageWorks XP24000 Business Copy Software User's Guide (T5213 - 96001, June 2007)

Table3TypesofBusinessCopyOptions
Option Type
Features
Requirement
Swap&Freeze
Swap&Freeze option suppresses
the update copy. For details, see
“Swap&Freeze Option”onpage27.
You must change
the storage system
setting to allo
wthe quickrestore
operation.
Host I/O
Performance
Host I/O Performance option
suppresses the copy operations by
Business Copy. For details, see
“Host I/O Performance Option”onpage28.
-
Copy Threshold
Copy Threshold option temporarily stops the
copy operation of Business Copy. For details,
see “Copy Threshold Option”onpage29.
-
Note: Available option types depend on the storage system settings.
Swap&Freeze Option
The Swap&Fr
eeze option allows the S-VOLs of a Business Copy pair to remain unchanged after the
quick rest
ore operation. If the quick restore operation is performed on a Business Copy pair with the
Swap&Freeze option, update copy operations are suppressed, and are thus not performed for pairs in
the PAIR status after the quick restore operation. If the quick restore operation is performed without
the Swap&
Freeze option, the P-VOL and S-VOL are resynchronized when update copy operations are
performed for pairs in the PAIR status.
Note: Make sure that the Swap&Freeze option remains in effect until the pair status changes to PAIR after
the quick
restore operation.
Figure 9 on page 28 shows the state of the S-VOL after the quick restore operation with or without the
Swap&Freeze option.
XP24000 Business Copy Software User's Guide
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