Mode Category Description Default MCU/RCU
1. When this SOM is set to ON, e
ven if there is an
overloaded CLPR (CLPR with large Write Pending
capacity), the amount of destage processing
would not increase easily. Therefore TOV(MIH)
may occur in the overloaded CLPR. Set this SOM
to ON only when the overloaded state of a
specic CLPR would not aect other CLPRs.
When the UR function is used, if user volumes
and journal volumes are dened in dierent
CLPRs, when the CLPR to which the journal
volumes are assigned overows, the user
volumes become inaccessible. Therefore it is
recommended to set this SOM to OFF.
2. Because the destage processing will have a
lower priority in the overloaded CLPR, the
overloaded state of the overloaded CLPR is not
removed, and TOV(MIH) might occur.
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models 296
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