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From: Decibel! <decibel@decibel.org>
To: Luke Lonergan <llonergan@greenplum.com>
To: Michael Ben-Nes <miki@epoch.co.il>
To: PostgreSQL Performance <pgsql-performance@postgresql.org>
Subject: Re: Integrated perc 5/i
Date: Thu, 16 Aug 2007 14:51:10 -0500
Message-ID: <20070816195110.GO54309@nasby.net> (raw)
In-Reply-To: <20070816175915.GA32679@uio.no>
References: <f3be18fa0708160126i62a857d6ubd993546bc3c197b@mail.gmail.com>
	<C2E9DD0C.3BCF1%llonergan@greenplum.com>
	<20070816175915.GA32679@uio.no>

On Thu, Aug 16, 2007 at 07:59:15PM +0200, Steinar H. Gunderson wrote:
> On Thu, Aug 16, 2007 at 10:53:00AM -0700, Luke Lonergan wrote:
> > They have a setting that sounds like RAID10, but it actually
> > implements spanning of mirrors.
> 
> That's interesting. I'm pretty sure it actually says "RAID10" in the BIOS,
> but is this a lie?

Unless they use the "plus notation" (ie: RAID 1+0 or RAID 0+1), you
never truly know what you're getting.

BTW, there's other reasons that RAID 0+1 stinks, beyond just
performance.
-- 
Decibel!, aka Jim Nasby                        decibel@decibel.org
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)

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