Received: from localhost (maia-5.hub.org [200.46.204.182]) by postgresql.org (Postfix) with ESMTP id 342959FA655 for ; Thu, 16 Aug 2007 16:51:26 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.182]) (amavisd-maia, port 10024) with ESMTP id 77405-07 for ; Thu, 16 Aug 2007 16:51:14 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from noel.decibel.org (noel.decibel.org [67.100.216.10]) by postgresql.org (Postfix) with ESMTP id D85CE9FA63B for ; Thu, 16 Aug 2007 16:51:16 -0300 (ADT) Received: by noel.decibel.org (Postfix, from userid 1001) id C630C56523; Thu, 16 Aug 2007 14:51:15 -0500 (CDT) Received: (hashcash-sendmail, from uid 1001); Thu, 16 Aug 2007 14:51:11 -0500 Date: Thu, 16 Aug 2007 14:51:10 -0500 From: Decibel! To: Luke Lonergan , Michael Ben-Nes , PostgreSQL Performance Subject: Re: Integrated perc 5/i Message-ID: <20070816195110.GO54309@nasby.net> References: <20070816175915.GA32679@uio.no> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="lbQeYSs6J2ITmUo7" Content-Disposition: inline In-Reply-To: <20070816175915.GA32679@uio.no> X-Operating-System: FreeBSD 6.1-RELEASE-p10 amd64 X-Distributed: Join the Effort! http://www.distributed.net User-Agent: Mutt/1.5.13 (2006-08-11) X-Hashcash: 1:20:070816:llonergan@greenplum.com::0c7M3dhmpQVcde6M:00000000000000 0000000000000000000000000nrt X-Hashcash: 1:20:070816:miki@epoch.co.il::Wta9pIHt2vU4ahFx:0FJLE X-Hashcash: 1:20:070816:pgsql-performance@postgresql.org::vRRAlULicem957yW:00000 0000000000000000000000002aZC X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200708/166 X-Sequence-Number: 26296 --lbQeYSs6J2ITmUo7 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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. >=20 > 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. --=20 Decibel!, aka Jim Nasby decibel@decibel.org EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) --lbQeYSs6J2ITmUo7 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.3 (FreeBSD) iD8DBQFGxKqudO30qud8SkgRAljBAKDj6+8xuKDYYizQl7250TAlux2uqQCgo6f7 n+gx7r273I473+rGVwxa5vk= =LCIP -----END PGP SIGNATURE----- --lbQeYSs6J2ITmUo7--