Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 92)

Chapter 2. CLI Syntax Reference
84 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.2
/cx/ux set qpolicy=on|off
The /cx/ux set qpolicy command sets the queue policy for the drives on the
unit. If the queue policy is on, the firmware utilizes the drive’s queueing
policy. However, the /cx/ux set qpolicy command has no effect on drives that
do not support a queueing policy.
By default, qpolicy is on. This setting is only applicable for SATA drives that
support native command queueing (NCQ) and has no effect on SAS units. For
spare drives, drive queuing is not applicable.
Example:
//localhost> /c0/u5 set qpolicy = on
Setting Command Queuing Policy for unit /c0/u5 to [on] ... Done.
/cx/ux set rapidrecovery all|rebuild|disable [quiet]
The /cx/ux set rapidrecovery command sets the Rapid RAID Recovery
policy for the specified redundant unit.
Rapid Raid Recovery can accelerate both the rebuild process and the initialize
and verify tasks that can occur in response to an unclean system shutdown.
Setting this option to all applies this policy to both these situations. Setting it
to rebuild applies it only to rebuild tasks. If the policy is set to disable, then
the time required to complete these tasks remains unchanged.
There is some system overhead from setting rapidrecovery to all. If you have
a BBU, you can set rapid recovery to rebuild, because a BBU provides
protection against data loss in the event of an unclean shutdown.
When this attribute is set, the policy remains in effect unless it is changed or
disabled for the unit.
Note: If the setting is disabled, it cannot be changed for
the unit at a later time.
The quiet option is provided for scripting purposes, and applies only to the
disable option. (/cx/ux set rapidrecovery=disable quiet)
Example:
//localhost> /c0/u0 set rapidrecovery=all
Setting Rapid RAID Recovery policy on /c1/u0 to [all] ... Done.
/cx/ux set storsave=protect|balance|perform [quiet]
The /cx/ux set storsave command sets the storsave policy to either protect,
balance, or perform when the unit write cache is enabled. The default setting
is balance when a BBU is installed, and protect when a BBU is not installed.
The storsave policy adjusts several factors that control the balance between
protection and performance on a unit. There is a trade-off among the available