Re: Performance RAID setup...

From: Gernot Hueber (hueber_at_riic.at)
Date: 08/31/04 

Date: Tue, 31 Aug 2004 12:24:01 +0200
To: Josh Paetzel <josh@tcbug.org>

Hello,

On 2004.08.26 22:14, Josh Paetzel wrote:
> On Thursday 26 August 2004 14:10, you wrote:
> > Mitch (bitblock) wrote:
> > [ ... ]
> >
> > > One floating consideration is the hard drive configuration and
> > > the relative performance.
> > >
> > > I could go with 6 73GB 15000 RPM drives in two RAID 5 sets, or I
> > > could go with 6 146GB 10000RPM drives in RAID mirrors.
> > >
> > > The goal is to provide a NFS / SAMBA server for 4 - 20
> > > application servers.
> > >
> > > Anyone have any value for dollar comments?
> >
> > Unless your volumes are read-only, or close to it, RAID-10 (or
> > "-1,0") will give you significantly better write performance than
> > RAID-5. You might also give small SAN devices a thought; in
> > particular, the Xserve RAID box has a very good price/performance
> > point.
> >
> > I don't have experience with the SRCU42L SCSI controller, so you
> > might want to do a search about it and FreeBSD, and/or ask your
> > vendor.
>

I had problems with storcon utility (FreeBSD 5.2 Release) The
controller is a SRCZCR (I hope), which is not detected by the tool.
Other models work perfectly.
Additionally I mentioned If you add a new volume online, it will not be
recognised by the OS. I had to reboot.
Last thing: use 2 power supplies (of course you will), they will die
too often.

regards

Gernot 

-- 
Dipl.-Ing. Gernot Hueber
Institut f. Integrierte Schaltungen
Altenbergerstr. 69
4040 Linz
Tel: +43 732 2468-7120, Fax: -7126
E-mail: hueber@riic.at
WWW: www.riic.at
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