> Wojiech, you seem deeply confused as to why people deploy RAID in
> server environments (more generally, shared hardware resources). You
> seem to taticlty assume the point of RAID in such environments is as a
> substitute for backup. In reality, the reasons for RAID are not
> primarily to avoid backup; point is to avoid *outage*, as seen by
> users of the shared resource.

i personally DO KNOW that. few hours outage is not such a big problem for 
me now, so i don't use it, and disks crash rarely.

just tell it thousand of people in many companies that thinks the way i 
argue with...