Dell 3 - Manual (Page 171)

PERC 3 BIOS Configuration Utility 169
– RAID 50 requires at least six physical drives per array.
5 Press after you finish creating the current array.
A window entitled Select Configurable Array(s) appears. It displays
the array, and array number, such as A-00.
6 Press the spacebar to select the array.
Span information, such as Span-1, displays in the array box. You can
create multiple arrays, then select them to span them.
NOTE: You can press
to display the
number of drives in the
array, their channel and
ID, and to display
array information, such
as the stripes, slots, and
free space.
7 Press to configure a logical drive.