🚀 go-pugleaf

You are right about the rebuild and speed.
When two disks fails, with raid 1 it's 33% probability that you loose data.
What is the probability that the second disk fails during rebuild compared to the

rebuild of disk in a raid 5 solution?

What really counts here is how fast can you change the failed disk?
If spare disk or changing disk is the problem I would choose RAID5,
and if speed is most important I would choose raid 1.

regards
Kjell Nannestad

RAIDER wrote:

> Dear Jim,
>
> You work for a company that sells RAIDs. You SPAM all the newsgroups
> with advertisements about your company. However, looking at your reply
> I'd be very wary of buying anything from such a "raidexpert".
>
> Jim, let it be known that a hot spare drive in a RAID 5 setup does
> NOTHING to protect from a failure of more than one drive at a time. What
> it does do, however, it minimizes MTTR (Mean Time To Repair) because
> most raid controllers will automatically initiate a rebuild of a failed
> drive onto a hot spare. Should another disk fail while the rebuild is
> still in progress - the RAID set and all the data on it will be lost.
>
> Regards,
>
> RAIDER
>
> Jim Pappe wrote:
> >
> > with Raid 5 plus hot spare - 2 drive can fail ..
> > www.raidexpert.com
> >
> > Mark Landin <m555@earthlink.net> wrote in message
> > news:37e660eb.12904299@news.earthlink.net...
> > > On Fri, 17 Sep 1999 07:54:19 +0100, "Steven Perez"
> > > <steve@uninet.demon.co.uk> wrote:
> > >
> > > >Kenneth:
> > > >
> > > >Go with RAID 1/0  Stripe, and mirror. This will give the very best
> > > >performance, and availability, although it will give the least amount of
> > > >storage.
> > >
> > > How is RAID 0/1 more "available" than RAID 5?
> > >
> > >