Hitachi VSP Gx00 series User Manual

Mode Category Description Default MCU/RCU
■ OFF in the primary stor
age 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
conguration, URxUR cascade conguration, or
3DC multi-target or cascading conguration 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 rst, 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 dierential JNL instead of
copying all data.
The UR Delta Resync conguration 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 302

Hitachi VSP Gx00 series Specifications

General

Brand	Hitachi
Model	VSP Gx00 series
Category	Storage
Language	English