From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Hill Subject: Re: What's the typical RAID10 setup? Date: Fri, 4 Feb 2011 16:22:12 +0000 Message-ID: <20110204162212.GA21779@cthulhu.home.robinhill.me.uk> References: <20110131152151.GD7861@cthulhu.home.robinhill.me.uk> <4D470F96.40409@cfl.rr.com> <4D471A41.1090706@hardwarefreak.com> <4D4730C0.8080900@cfl.rr.com> <20110201092007.GA7860@cthulhu.home.robinhill.me.uk> <4D4C2352.9000407@cfl.rr.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="BXVAT5kNtrzKuDFl" Return-path: Content-Disposition: inline In-Reply-To: <4D4C2352.9000407@cfl.rr.com> Sender: linux-raid-owner@vger.kernel.org To: Phillip Susi Cc: Linux-RAID List-Id: linux-raid.ids --BXVAT5kNtrzKuDFl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri Feb 04, 2011 at 11:03:30AM -0500, Phillip Susi wrote: > FYI, you should get in the habit of using your mail client's reply to > all function. I did not see this until now because you did not send me > a copy. >=20 I'll make an exception in this case, but I generally reply to messages on mailing lists to the list only, and I have no plans to change this. > On 2/1/2011 4:20 AM, Robin Hill wrote: > > No, it's RAID 10 or RAID 1+0. RAID 0+1 would be 2 mirrored pairs of > > 5-disk RAID 0 arrays, in which case you could only lose 5 disks if >=20 > In English we read from left to right and top to bottom, so 0+1 means > stripe on top of mirror. >=20 The vast majority of online sources would disagree with you. See: http://en.wikipedia.org/wiki/Nested_RAID_levels http://www.aput.net/~jheiss/raid10/ http://decipherinfosys.wordpress.com/2008/01/15/difference-between-raid= -01-vs-raid-10/ http://www.raid.com/04_01_0_1.html http://www.pcguide.com/ref/hdd/perf/raid/levels/multLevel01-c.html http://www.adrc.com/raid-01.html The order it's written is the order of creation. RAID0+1 =3D RAID 0, then RAID 1 (mirrored stripes) and RAID1+0 =3D RAID 1, then RAID 0 (striped mirrors). Cheers, Robin --=20 ___ =20 ( ' } | Robin Hill | / / ) | Little Jim says .... | // !! | "He fallen in de water !!" | --BXVAT5kNtrzKuDFl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEARECAAYFAk1MJ7MACgkQShxCyD40xBLu9gCg0bcz3kiUFnZqWJHSJ4itQMXg WsIAoJLvipPAYYBZA9m/4DhOVj6ZzIg+ =TBDz -----END PGP SIGNATURE----- --BXVAT5kNtrzKuDFl--