From: Peter Kovacs <maxottovonstirlitz@gmail.com>
To: Andreas Kostyrka <andreas@kostyrka.org>
To: Peter Kovacs <maxottovonstirlitz@gmail.com>
To: david@lang.hm <david@lang.hm>
To: Geoff Tolley <geoff@polimetrix.com>
To: Ron <rjpeace@earthlink.net>
To: jason@ohloh.net <jason@ohloh.net>
To: pgsql-performance@postgresql.org
Subject: Re: SCSI vs SATA
Date: Wed, 4 Apr 2007 15:30:00 +0200
Message-ID: <b6e8f2e80704040630s5a9b1848g14beedd96f2b22f9@mail.gmail.com> (raw)
In-Reply-To: <20070404131920.GA8549@alvh.no-ip.org>
References: <9C0858F5-0A48-4AF9-80FF-E4BA14F0F965@ohloh.net>
<E1HYs6Y-0008O5-SN@elasmtp-banded.atl.sa.earthlink.net>
<E1HYsBX-0006ZE-JG@elasmtp-banded.atl.sa.earthlink.net>
<4613053F.5070401@polimetrix.com>
<Pine.LNX.4.64.0704032106210.30746@asgard.lang.hm>
<b6e8f2e80704040416s1537b907g2dc5290dbb4c571b@mail.gmail.com>
<20070404124640.GC20893@andi-lap.la.revver.com>
<20070404131920.GA8549@alvh.no-ip.org>
But if an individual disk fails in a disk array, sooner than later you
would want to purchase a new fitting disk, walk/drive to the location
of the disk array, replace the broken disk in the array and activate
the new disk. Is this correct?
Thanks
Peter
On 4/4/07, Alvaro Herrera <alvherre@commandprompt.com> wrote:
> Andreas Kostyrka escribió:
> > * Peter Kovacs <maxottovonstirlitz@gmail.com> [070404 14:40]:
> > > This may be a silly question but: will not 3 times as many disk drives
> > > mean 3 times higher probability for disk failure? Also rumor has it
> > > that SATA drives are more prone to fail than SCSI drivers. More
> > > failures will result, in turn, in more administration costs.
> > Actually, the newest research papers show that all discs (be it
> > desktops, or highend SCSI) have basically the same failure statistics.
> >
> > But yes, having 3 times the discs will increase the fault probability.
>
> ... of individual disks, which is quite different from failure of a disk
> array (in case there is one).
>
> --
> Alvaro Herrera http://www.CommandPrompt.com/
> The PostgreSQL Company - Command Prompt, Inc.
>
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To: pgsql-performance@postgresql.org
Cc: maxottovonstirlitz@gmail.com, andreas@kostyrka.org, david@lang.hm, geoff@polimetrix.com, rjpeace@earthlink.net, jason@ohloh.net
Subject: Re: SCSI vs SATA
In-Reply-To: <b6e8f2e80704040630s5a9b1848g14beedd96f2b22f9@mail.gmail.com>
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