Manually setting cluster size during format?

[Reverend Maynard]

Howdy all. As the title implies, I am looking for a way to set the cluster size when I format a drive. I did it before but I can't remember how.

This is going to be on a 2x40 gig raid 0 array. I plan on testing a wide variety of cluster/stripe combos to see which offers the best performance, anyone have any suggestions?

Also, big thanks to agallag, without him I would have smashed this damn computer into a million little pieces before I got to this point.

[Technoid]

FORMAT drive: /Z:n formats a FAT32 drive with a cluster size of n times 512
Bytes. Meaning:
drive: = your hard drive letter: C:, D:, E:... etc.
n = number of sectors per cluster multiplied by 512 (cluster size in Bytes).
Examples:
n = 1 creates a 512 Bytes cluster;
n = 2 creates a 1024 Bytes (1 KB) cluster;
n = ? creates a ? x 512 = ???? Bytes (???? bytes : 1024 = ? KB) cluster.
You can modify the size of the allocation units (sectors) on a FAT32 drive to
your heart desire.
WARNING: It is recommended NOT to change the default cluster size, because
some programs such as disk-repair/anti-virus tools might STOP
working properly!

[Alec]

I know these for sure:

4 KB: Format x:
8 KB: Format x: /z:16
16 KB: Format x: /z:32