In article <41F7C157.9090108@gmx.de>,
	Jochen Keil <J.Keil@gmx.de> writes:
> The iozone benchmark are very interesting (at least for me). A 3 disk R5
> setup (with two usable disks) set up with a correct stripe/fs block size
> is about 4 times faster than a 4 disk R5 (3 usable disks) setup.

What's surprising about that? On a 3 disk RAID 5 you need 3 reads and
3 writes for 1 write to the RAID. On a 4 disk RAID 5 you need 4 of them.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/