Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 251)

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will give better performance with applications that have a lot of random reads
and writes. In general, the smaller the stripe size, the better the sequential I/O
and the worse the random I/O. The larger the stripe size, the worse the
sequential I/O and the better the random I/O.
Write Cache , Auto Verify , and Overwrite ECC. These check boxes let you
set the policies for the unit. These policies can also be set and changed on the
Controller Settings page. For details about these policies, see “Unit Policies”
on page 225.
StorSave. You can specify the StorSave Profile to be used for the unit. Three
profiles are available: Protection, Balanced, and Performance. For more
information, see “Setting the StorSave Profile for a Unit” on page 123.
Rapid RAID Recovery. Determines which Rapid RAID Recovery option to
use, All , Rebuild or Disable . All will apply the policy to both rebuilds and
unclean shutdowns. Rebuild will apply only to rebuilds. You can switch
between All and Rebuild settings, but, once Rapid RAID Recovery is
disabled for the unit, it cannot be re-enabled. For details, see “Rapid RAID
Recovery” on page 126.
Note: If the configuration window disappears while you are selecting drives, 3DM 2
may have refreshed. Click Create Unit again. If desired, you can reduce the
frequency with which information refreshes in 3DM 2, or disable refresh temporarily,
on the 3DM 2 Settings page.