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

When you specify Quick Split, the pair status changes to PSUS(SP), and the S-VOL is available
immediately for read and write I/Os (even though it is still reserved). The whole P-VOL data or
differential data at that time will be copied to the S-VOL in the background.
• PairsplitbySteadySplit
When you specify Steady Split, the pair status changes to COPY(SP), and the whole P-VOL data
or differential data at that time will be copied to the S-VOL. When the Steady Split operation is
complete, you have full read/write access to the split S-VOL (even though it is still reserved). To
quickly finish the copy operation to access the S-VOL, make the P-VOL offlinebeforethe operation.
• Pairsplit by At-Time Split
Pairsplit operation by At-Time Split can be performed by using RAID Manager.
When the Business Copy At-Time Split function is enabled, data in all P-VOLs in the same
consistency group is created in the corresponding S-VOLs at the time the storage system receives
the pairsplit request from the host server. Figure 5 on page 19 shows an overview of the Business
Copy At-Time Split function.
Figure 5 Overview of At-Time Split Function
Consistency groups are defined by RAID Manager’s configuration definition file, which is created by
users. The Business Copy software on the Remote Web Console computer displays consistency group
information, but you cannot perform the At-Time Split operation by using Remote Web Console. Use
RAID Manager from the host in order to perform the At-Time Split operation. For further information on
RAI
D Manager, see the HP StorageWorks XP RAID Manager User’s Guide.
Suspend Pair Operation
When you suspend copy operations (using the RAID Manager pairsplit-E command), the P-VOL and
S-VOL status become PSUE and SSUE, respectively, and every track on the P-VOL is marked as differential
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