Mode Category Description Default MCU/RCU
1086 Dynamic
Provisioning
Universal Volume
Manager
This SOM enables or disables the performance improvement
for Dynamic Provisioning volumes that are Universal Volume
Manager volumes used as pool volumes.
Mode 1086 = ON (default): The performance improvement
is enabled.
Mode 1086 = OFF: The performance improvement is
disabled.
Notes:
1. This SOM is applied when the IOPS performance of an
external storage system is higher than 80k × the
number of installed MPBs, which is the value of IOPS
that an entire local storage system sends to an external
storage system.
2. When it is required to set this SOM to OFF, if IOPS sent
from the local storage system to the external storage
system is higher than 80k x the number of installed
MPBs, reduce the IOPS to lower than 80k × the number
of installed MPBs, and then set this SOM to OFF.
(Otherwise CWP increases and cache is overloaded.)
OFF -
1093 Dynamic
Provisioning
Dynamic Tiering
Thin Image
This SOM is used to disable background unmap during
microcode downgrade from a version that supports pool
reduction rate correction to a version that does not support
the function.
Mode 1093 = ON: Background unmap cannot work.
Mode 1093 = OFF (default): Background unmap can work.
Note: This SOM is applied when downgrading microcode
from a version that supports pool reduction rate correction to
a version that does not support the function is disabled.
OFF -
1097 Common This SOM disables the warning LED to blink when specific
SIMs are reported.
Mode 1097 = ON: When SIM=452XXX, 462XXX, 3077XY,
4100XX, or 410100 is reported, the warning LED does not
blink.
Mode 1097 = OFF (default): When SIM=452XXX, 462XXX,
3077XY, 4100XX, or 410100 is reported, the warning LED
blinks.
Note: This SOM disables the warning LED to blink when
specific SIMs are reported.
OFF -
1106 Dynamic
Provisioning
Dynamic Tiering
This SOM is used to monitor the page usage rate of parity
groups defined to a pool, and perform rebalance to balance
the usage rate if the rate differs significantly among parity
groups.
Mode 1106 = ON: The usage rate is checked once a day
and the rebalance works if the rate is not even.
Mode 1106 = OFF (default): The rebalance does not work
even when the usage rate is not balanced.
OFF -
382 System option modes
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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