Mode
Category
Description
Default
MCU/RCU
■
OFF in the primary storage system/ON in the
secondary storage system: The update data
is copied to the S-VOL synchronously.
5.
While this SOM is set to ON, make sure not to
perform microcode downgrade to an
unsupported version.
6.
While this SOM is set to ON, make sure not to
perform the Take Over function.
7.
This SOM cannot be applied to a UR pair that is
the second mirror in a URxUR multi-target
configuration,
URxUR cascade
configuration,
or
3DC multi-target or cascading
configuration
of
three UR sites. If applied, TC pair creation is
rejected with SSB=CBED output.
8.
Before setting SOM 474 to ON, make sure that
SOM 1091 is set to OFF. If SOM 1091 is set to
ON, set it to OFF
first,
and then set SOM 474 to
ON.
506
Universal
Replicator
This SOM is used to enable Delta Resync with no host
update I/O by copying only
differential
JNL instead of
copying all data.
The UR Delta Resync
configuration
is required.
Mode 506 = ON:
■
Without update I/O: Delta Resync is enabled.
■
With update I/O: Delta Resync is enabled.
Mode 506 = OFF:
■
Without update I/O: Total data copy of Delta
Resync is performed.
■
With update I/O: Delta Resync is enabled.
Note:
Even when SOM 506 is set to ON, the Delta
Resync may fail and only the total data copy of the
Delta Resync function is allowed if the necessary
journal data does not exist on the primary storage
system used for the Delta Resync operation.
ON
Both
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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