Your choice of Random or Sequential optimization affects the maximum
number of disks you can include in an array and the maximum usable capacity
of a logical drive.
You select the optimization mode in the Change
Controller Parameters window.
NOTE: In some configurations, you might not be able to use all
disks for data when using high-capacity disks. Any remaining disks can
be used as spares.
For more information, refer to the Sun StorEdge 3000 Family RAID
Firmware User's Guide.