From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id o6Q922EU110128 for ; Mon, 26 Jul 2010 04:02:02 -0500 Received: from mailsrv14.zmi.at (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 99D40C287A1 for ; Mon, 26 Jul 2010 02:12:18 -0700 (PDT) Received: from mailsrv14.zmi.at (mailsrv1.zmi.at [212.69.164.54]) by cuda.sgi.com with ESMTP id MdqWCzwbBAEAbH3I for ; Mon, 26 Jul 2010 02:12:18 -0700 (PDT) From: Michael Monnerie Subject: Re: 4k drives: benefits and models? Date: Mon, 26 Jul 2010 11:05:02 +0200 References: <20100726082141.GA8239@apartia.fr> In-Reply-To: <20100726082141.GA8239@apartia.fr> MIME-Version: 1.0 Message-Id: <201007261105.02689@zmi.at> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============7191379032120900501==" Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com --===============7191379032120900501== Content-Type: multipart/signed; boundary="nextPart3044400.iNKUnuxUTx"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit --nextPart3044400.iNKUnuxUTx Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable On Montag, 26. Juli 2010 Louis-David Mitterrand wrote: > - what are the benefits of these new drives? Speed, temperature, > reliability? >=20 > - what specific HD models are truely 4k for purchase right now? I'm > on the market for a bunch of 2Tb drives, what is a good choice? >=20 > - what options do I need when creating my raid6 array and xfs > filesystem to fully take advantage of 4k sectors? =20 ATM we are in a transition phase - there are first drives available, and=20 it will take some time until every hardware and software piece is fully=20 able to support 4K sectors. Probably all hard disk manufacturers will=20 switch to 4K sectors within the next years, as the advantage is that=20 more data can be saved onto a hard drive, and speed slightly increases=20 (when used correctly). But that will be a long transition. It's not necessary to buy 4k sector drives, I'd only recommend it if you=20 are a techie and want to play around with it. Stay at normal drives,=20 that's proven technology and works. =46or a hardware RAID-6 controller, it shouldn't matter, as the stripe=20 size is usually 16k or higher, which is 32 sectors (or 8x 4K sectors),=20 and as a multiple of the sector size there's no speed difference to=20 normal drives. I use my 2 4k drives with a software RAID-0 in Linux, it's mostly to=20 play around (sometimes I'm still a techie), and get an idea of how good=20 the technology can be used already. I have no idea about Windows support for 4k sector drives. =2D-=20 mit freundlichen Gr=FCssen, Michael Monnerie, Ing. BSc it-management Internet Services http://proteger.at [gesprochen: Prot-e-schee] Tel: 0660 / 415 65 31 ****** Aktuelles Radiointerview! ****** http://www.it-podcast.at/aktuelle-sendung.html // Wir haben im Moment zwei H=E4user zu verkaufen: // http://zmi.at/langegg/ // http://zmi.at/haus2009/ --nextPart3044400.iNKUnuxUTx Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (GNU/Linux) iEYEABECAAYFAkxNT74ACgkQzhSR9xwSCbShEACgsQHSNWG1NCqHBzgdxDb22ZBg DwQAn13P1Hz7P92MZEmyRg8f54DFjyH+ =tVKq -----END PGP SIGNATURE----- --nextPart3044400.iNKUnuxUTx-- --===============7191379032120900501== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs --===============7191379032120900501==--