Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 125)

Setting Unit Policies
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Setting the StorSave Profile through 3BM
In 3BM, the StorSave Profile is set on the Configure Disk Array screen.
To set the StorSave Profile through 3BM
1 At the main 3BM screen, select the unit by highlighting it and pressing
Enter .
An asterisk appears in the left-most column to indicate that it is selected.
2 Tab to the Maintain Unit button and press Enter .
3 On the pop-up menu, select Configure and press Enter .
4 In the Configure Disk Array screen, Tab to the field StorSave Profile .
The current setting—Protection, Balanced, or Performance—is shown.
(The default setting is Balanced.)
5 Press Enter to display the choices, use the arrow keys to select the
setting you want, and press Enter again to choose it.
6 Tab to the OK button and press Enter to select it.
You return to the main 3BM screen.
7 When you are finished making changes, press F8 to save them and exit
3BM.
Rapid RAID Recovery
The Rapid Raid Recovery feature increases the speed with which a redundant
unit can be made redundant again when a rebuild is required. It can also
increase the speed of verification or initialization that may occur in the event
of an unclean shutdown.
Rapid RAID Recovery is possible because the firmware maps the unit, and
tracks the areas of the unit where write activity occurs. Then, if a rebuild,
initialization, or verify is required, the controller only has to address the active
areas. The fewer active areas, the faster the rebuild, initialize or verify.
Since the units are mapped out and tracked from the creation of the unit, this
feature can only be enabled during unit creation. Also, once disabled, it
cannot be re-enabled.
The more space is available on a unit, the more benefit you will see in the
event of a rebuild, if you enable Rapid RAID Recovery. If all of a unit’s
capacity is being used, you may not see reduction of rebuild speed when using