first pre-emptive raid

[Rudy]

Derek Ragona wrote:

> Mirroring offers redundancy but uses twice the disk space, AND is slower 
> than striping.

Actually, disk Reads of a stripe and a mirror are the same.  Writes are same speed as a single disk 
(half the speed of a two disk stripe).

If you use something like gmirror and set the algorithm to 'round robin' reads are done from both 
disks.... if you access a 2MB file, 1MB is read from disk0 and the other MB from disk1.

Rudy