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Chapter 4 Functions of ReplicationControl
147
y No Wait (-nowait)
Performs only a Separate start instruction and terminates the command. You can check the
termination of the command by the iSMrc_query or iSMrc_wait command.
(4) Forced Separate (-force)
If a fault occurs in the connection between disk arrays and the normal Separate cannot be
performed for MV and RV, you can specify the -force option to instruct Separate to MV and RV
separately.
You can specify one of the following as a Forced Separate target.
y Perform Forced Separate for both MV and RV. (-force all)
y Perform Forced Separate only for MV. (-force mv)
y Perform Forced Separate only for RV. (-force rv)
When performing Forced Separate, note the following:
y If MV and RV are in the same system, the “all” is normally specified.
y Forced Separate by specifying MV or RV is used when MV and RV are in the different systems.
y When Forced Separate is performed by specifying MV (or RV), after the problem has been
solved, Forced Separate must be performed by specifying RV (or MV) in the other system.
y If Forced Unpair is performed for either MV or RV, subsequent replication operations will not
function properly because inconsistency occurs in the recognized states of MV and RV.
(5) RV use start time (-rvuse)
You can select one of the following as the time for making the RV available:
y Immediately after Separate execution (-rvuse immediate)
After Separate is started, RV becomes available even during execution of Separate while the
difference between MV and RV is being reflected to RV.
y After completion of Separate (-rvuse complete)
After Separate is started, RV does not become available until the difference between MV and
RV is fully reflected to RV and Separate is completed. RV cannot be used while the
difference between MV and RV is being reflected to RV.
y According to the default setting (-rvuse default)
On the Windows system, the system follows the RVUSE specification in the replication
operation option setting file. On the UNIX system, the system follows the setting of the
RPL_SEP_RVUSE environment variable. For details of each setting, refer to the “Data
Replication Command Reference”.