Figure 26 FlashCopy linkage configuration that uses the Preserve Mirror function
Business Continuity Manager supports the following functions in a Compatible FlashCopy linkage
configuration:
• The YKFCSTAT command can be used to determine the copy status in order to monitor the
completion of the copy processing for a linked Compatible FlashCopy.
• During Preserve Mirror execution, the inconsistent status of a Continuous Access Synchronous
copy pair (the status in which the consistency of data on the P-VOL and the S-VOL cannot be
guaranteed) caused by an interruption to Compatible FlashCopy copy processing can be
obtained as the CONSLOST status.
For details about operations using these functions, see “Using Compatible FlashCopy linkage
configurations” (page 278).
Prerequisites for the Compatible FlashCopy linkage configuration
The following describes the prerequisites for linking Compatible FlashCopy.
Storage system conditions
XP24000/XP20000 and P9500 are used. Note, however, that the Preserve Mirror function can
be used only with XP24000/XP20000.
Compatible FlashCopy conditions
• Compatible FlashCopy Version 2 is used.
• The following table lists the available Compatible FlashCopy functions.
Table 7 Available FlashCopy functions in order to link with FlashCopy
When the Preserve Mirror function is
used
When the Preserve Mirror function is not
used
Compatible FlashCopy
function
YYCOPY mode
YNNOCOPY mode
YNNOCOPYTOCOPY mode
YNIncremental FlashCopy
YNConsistency Group
Legend: Y: Can be used; N: Cannot be used
• To create a relationship with Compatible FlashCopy, the following options must be specified.
Replication products and data center configurations 55
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