.SS RAID4
A RAID4 array is like a RAID0 array with an extra device for storing
-parity. Unlike RAID0, RAID4 also requires that all stripes span all
+parity. This device is the last of the active devices in the
+array. Unlike RAID0, RAID4 also requires that all stripes span all
drives, so extra space on devices that are larger than the smallest is
wasted.