HP Surestore Disk Array 12h - And FC60 System Administrator Manual page 69

Parameter
Force Unit Access
Response
Disable Read Hits
Resiliency Threshold
Using the ARM Command Line Utilities for HP-UX
Viewing the Disk Array General Configuration Settings
Default
Setting
2 Controls the array's response to the FUA bit. The FUA bit
is a command from the host when Write Cache is
enabled. It gives the host an opportunity to flush write
cache on command:
If this field is 0, then the FUA bit is ignored.
If this field is 1, then the FUA bit in a write command
disables immediate report on the write and all write cache
data for the involved LUN will be flushed.
If this field is 2, then the FUA bit in a write command
disables immediate report on the write and all write cache
data for the involved LUN will be flushed along with the
map journal before completing the write request.
If NVRAM use is disabled due to the chosen map
resiliency mode, then this field is ignored.
FALSE Controls the array's ability to satisfy read commands from
write cache contents during FUA processing. If NVRAM
use is disabled due to the chosen map resiliency mode,
then read data is never satisfied out of write cache.
4 Specifies the maximum time between delivery of the
response to a write command to the host, and initiation of
associated writes out of write cache and map journal to
disks. This time is specified in seconds. This maximum
time is submitted to the scheduler for implementation.
Depending on the priority of other events in the scheduler,
the desired time may not be implemented. If NVRAM use
is disabled due to the chosen map resiliency mode, then
this field is ignored. The 0 value of this field is not the
same as disabling NVRAM use. A value of 0h indicates
that no maximum time will be enforced and that no
recovery image will be available.
Description
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