Mode Category Description Default MCU/RCU
1043 Universal
Replicator
This SOM disables journal copy.
Mode 1043 = ON: When the follo
wing conditions are
met at the UR secondary site, the journal copy is
disabled.
For VSP Fx00 models and VSP Gx00 models, the
following conditions (1) and (2) or (1) and (3) are met:
1. 4,096 or more journals are accumulated at the
secondary site.
2. The CLPR write pending rate for journal volumes
of MP blade/unit for which journal ownership at
the RCU is dened is 25% or higher (including
the write pending rate for other than journal
volumes).
3. The initiator operating rate of the MP blade/unit
for which journal ownership at the RCU is
dened is 40% or higher.
Note: Even though the above conditions are met,
journal copy is not disabled when all time stamps of
the journals accumulated are the same in a
consistency group containing multiple journals.
Mode 1043 = OFF (default): The journal copy is not
disabled.
Notes:
1. This SOM applies when one of the following
conditions is met:
a. Multiple journals are registered in a
consistency group of CCI.
b. Multiple journals are registered in an
extended consistency group.
c. Journals are accumulated at the secondary
site, causing the system performance to
decrease.
2. If SOM 690 is set to ON and the Write Pending
rate is 60% or higher, the journal copy is
disabled regardless of the setting of this SOM.
3. When the host write speed is faster than the JNL
copy speed, the usage rate of the master journal
increases.
4. This SOM is eective within the range of each
CLPR. Therefore, an operation target LPRxx (xx=
00 to 31) needs to be selected before setting
this SOM to ON/OFF.
OFF Both
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 335
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