HP StorageWorks XP Remote Web Console Software User Manual
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If an XP Continuous Access Synchronous pair and a TrueCopy for Mainframe synchronous pair
are registered in the same group, you can ensure the data consistency between an XP Continuous
Access Synchronous pair and a TrueCopy for Mainframe synchronous pair on each of the S-VOLs
and the R-VOLs in the same group. If only XP Continuous Access Synchronous pairs or only TrueCopy
for Mainframe synchronous pairs are registered in the group, you can ensure the data consistency
of the pairs on each of the S-VOLs and the R-VOLs in each group. For further informations on
TrueCopy for Mainframe synchronous pairs, see the Hitachi TrueCopy™ for Mainframe User Guide:
HP XP24000 Disk Array, HP XP20000 Disk Array.
For details about creating pairs and specifying consistency groups for XP Continuous Access
Synchronous, and the consistency group operation, see the HP RAID Manager User Guide or the
HP Business Continuity Manager Software User Guide.
Figure 4 Creation and Operation of XP Continuous Access Synchronous Pairs that Specifies the
Consistency Group
If the split command (Pairsplit-r or YKSUSPND) is issued to a consistency group of XP Continuous
Access synchronous pairs and if the I/O processing on the volumes in the consistency group has
not finished, the split operation to the XP Continuous Access volume pairs is executed to maintain
the data consistency on each of the S-VOLs and the R-VOLs after the I/O processing and the transfer
of the data to the S-VOLs have finished.
shows the split operation for volume B finishes after the I/O processing and
the transfer of the data to the S-VOL. The I/O processing on volume B in the consistency group
has not completed when the split command is issued
XP Continuous Access Synchronous Consistency Group Operations
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