Re: best raid configuration for oracle on solaris

i think Knut may have been referring to a subtle distinction between RAID 1+0 and RAID 0+1 ... the loss of a single disk in a stripe set means the rest of the stripe set cannot be used, and continuous operation is now reliant on each and every disk the "mirror" of the stripe set.

"Fad" <nospam_at_allowed.localhost> wrote in message news:hD047.15504$jb3.526187_at_news1.bredband.com...
>
> "Knut Talman" <knut.talman_at_mytoys.de> wrote in message
> news:3B4F2BF6.83985B88_at_mytoys.de...
> > > Disks 1-4: RAID 0+1: datafiles, rollback segments, control files
> >
> > Maybe you already know it, but you should use RAID 1+0 not 0+1. If
> > you use 0+1 (stripe then mirror) and one disk says "Good bye" you
> > will loose the whole stripe set.
> >
>
> That's just a basic property of striping, since it is unprotected (e.g.
> no parity disk). But then, the stripe set was mirrored, so no loose yet
> (except the one disk drive, of course).
>
> Regards
> /Fad
>
>
> > Regards,
> >
> > Knut
> >
> > --
> > Knut Talman Fon +49 30 72 62 01
 411
> > dba_at_myToys.de Fax +49 30 72 62 01
 222
> > The degree of normality in a database is inversely
> > proportional to that of its DBA
>
>
>
Received on Sun Jul 15 2001 - 00:17:02 CDT