From: Scott Marlowe <smarlowe@g2switchworks.com>
To: Douglas McNaught <doug@mcnaught.org>
Cc: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Steve Atkins <steve@blighty.com>
Cc: PostgreSQL General <pgsql-general@postgresql.org>
Cc: Pgsql-Performance ((E-mail)) <pgsql-performance@postgresql.org>
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
Date: Wed, 10 May 2006 10:10:00 -0500
Message-ID: <1147273799.9755.20.camel@state.g2switchworks.com> (raw)
In-Reply-To: <87r732ndat.fsf@suzuka.mcnaught.org>
References: <200605100102.k4A12wa12853@candle.pha.pa.us>
<1147272179.9755.18.camel@state.g2switchworks.com>
<87r732ndat.fsf@suzuka.mcnaught.org>
On Wed, 2006-05-10 at 09:51, Douglas McNaught wrote:
> Scott Marlowe <smarlowe@g2switchworks.com> writes:
>
> > On Tue, 2006-05-09 at 20:02, Bruce Momjian wrote:
>
> >> You do if the controller thinks the data is already on the drives and
> >> removes it from its cache.
> >
> > Bruce, re-read what I wrote. The escalades tell the drives to TURN OFF
> > THEIR OWN CACHE.
>
> Some ATA drives would lie about that too IIRC. Hopefully they've
> stopped doing it in the SATA era.
Ugh. Now that would make for a particularly awful bit of firmware
implementation. I'd think that if I found a SATA drive doing that I'd
be likely to strike the manufacturer off of the list for possible future
purchases...
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: smarlowe@g2switchworks.com, doug@mcnaught.org, pgman@candle.pha.pa.us, steve@blighty.com, pgsql-general@postgresql.org
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
In-Reply-To: <1147273799.9755.20.camel@state.g2switchworks.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox