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Mode
Category
Description
Default
MCU/RCU
690
Universal
Replicator
This SOM is used to prevent Read JNL or JNL Restore
when the Write Pending rate on RCU exceeds 60% as
follows:
■
When CLPR of JNL-Volume exceeds 60%, Read JNL
is prevented.
■
When CLPR of Data (secondary)-Volume exceeds
60%, JNL Restore is prevented.
Mode 690 = ON:
Read JNL or JNL Restore is
prevented when the Write Pending rate on RCU
exceeds 60%.
Mode 690 = OFF (default):
Read JNL or JNL Restore
is not prevented when the Write Pending rate on
RCU exceeds 60% (the same as before).
Notes:
1.
This SOM can be set online.
2.
This SOM should be set per customer’s
requests.
3.
If the Write Pending status long keeps 60% or
more on RCU, it takes extra time for the initial
copy to be completed by making up for the
prevented copy operation.
4.
If the Write Pending status long keeps 60% or
more on RCU, the pair status may become
Suspend due to the JNL-Vol being full.
5.
When USP/NSC is used on the P-VOL side, this
SOM cannot be used. If this SOM is set to ON,
SSB=8E08 on the P-VOL side and SSB=C8D1 on
the S-VOL side might be output frequently.
OFF
RCU
696
Open
This SOM is available to enable or disable the QoS
function.
Mode 696 = ON:
QoS is enabled. (In accordance with
the Share value set to SM, I/Os are scheduled. The
Share value setting from RMLIB is accepted)
Mode 696 = OFF (default):
QoS is disabled. (The
Share value set to SM is cleared. I/O scheduling is
stopped. The Share value setting from host is
rejected.)
Note:
Set this SOM to ON when you want to enable
the QoS function.
OFF
-
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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Содержание Virtual Storage Platform F400
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Страница 30: ...Chapter 1 System administration overview System Administrator Guide for VSP Gx00 models and VSP Fx00 models 30 ...
Страница 202: ...Chapter 8 Configuring audit logs System Administrator Guide for VSP Gx00 models and VSP Fx00 models 202 ...
Страница 362: ...Glossary System Administrator Guide for VSP Gx00 models and VSP Fx00 models 362 ...
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