Regarding Raid5 at all, you might want to look at http://www.baarf.com
""Stephane Tessier"" <stephane(dot)tessier(at)abovesecurity(dot)com> wrote in message
news:001f01c4763c$fcef40f0$4e00020a(at)develavoie(dot)(dot)(dot)
> I think with your help guys I'll do it!
>
> I'm working on it!
>
> I'll work on theses issues:
>
> we have space for more ram(we use 2 gigs on possibility of 3 gigs)
> iowait is very high 98% --> look like postgresql wait for io access
> raid5 -->raid0 if i'm right raid5 use 4 writes(parity,data, etc) for each
....