Mode
Category
Description
Default
MCU/RCU
142
Common
When a command issued to a drive turns to time-
out, the failure is counted on the failure counter of
the drive port. If the failure counter reaches the port
blockage threshold, the drive port is blocked. When
this SOM is set to ON, the port is blocked when the
number of failures reaches the half point of the
threshold, which mitigates the occurrence possibility
of the host time-out.
Mode 142 = ON (default*):
The threshold value of
blocking a drive port due to command time-out is
changed to the half of the normal threshold.
Mode 142 = OFF:
The threshold value of blocking a
drive port due to command time-out does not
change.
*The default setting for this SOM depends on the
microcode level:
■
Default = ON: 83-03-28 and later (within 83-03-2x
range), 83-04-03 and later
■
Default = OFF: earlier than 83-03-28, earlier than
83-04-03 (within 83-04-0x range)
Notes:
1.
This SOM should always be set to ON. This SOM
can be set to OFF only when the customer does
not allow to set this SOM to ON for a storage
system already in production.
2.
This SOM is
effective
for the entire storage
system.
ON
-
System option modes
Appendix B: System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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