Avago Technologies 3ware SAS 9750-4i - Manual (Page 103)

Unit Object Commands
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/cx/ux set rapidrecovery all|rebuild|disable [quiet]
This command only applies to 9750 and 9000 series controllers, models SE
and SA, and only for redundant units. Firmware 9.5.1 or later is required on
9000 series SE/SA models. Firmware 10.0 or later is required on 9750.
This command sets the Rapid RAID Recovery policy for the specified unit.
Rapid Raid Recovery can speed up the rebuild process, and it can speed up
initialize and verify tasks that may 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 none of the tasks will be sped up.
There is some system overhead from setting rapidrecovery to all. If you have
a BBU, you can set rapid recovery to rebuild, as a BBU provides protection
against data loss in the event of an unclean shutdown.
Once this attribute is set, the policy remains in effect unless it is changed or
disabled for the unit.
Note: Once disabled, this setting cannot be changed for
the unit at a later time.
The quiet option is provided for scripting purposes, and is applicable 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.
/c x /u x set storsave=protect|balance|perform [quiet]
This feature only applies to 9750 model controllers and 9000 series SX/SE/
SA model controllers.
This command sets the storsave policy to be either protect, balance, or
perform when the unit write cache is enabled. The default setting is balance
when a BBU is installed, and perform whan 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
settings. The following description about the settings should help you to
decide which one is suitable to you and your application. You will find further
discussion of this setting in the 3ware SATA+SAS RAID Controller Card
Software User Guide, Version 10.0, under “About StorSave Profile Levels” on
page 119.
Note: When upgrading to 9.5.1 or later, redundant units created using firmware
versions prior to 9.5.1 are assigned a Rapid Recovery Policy of disable, which
cannot be changed.