From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 406DC138C9D for ; Tue, 28 Apr 2015 18:11:28 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id CEC50E08E1; Tue, 28 Apr 2015 18:11:20 +0000 (UTC) Received: from mail.digimed.co.uk (82-69-83-178.dsl.in-addr.zen.co.uk [82.69.83.178]) by pigeon.gentoo.org (Postfix) with ESMTP id BB54FE0899 for ; Tue, 28 Apr 2015 18:11:18 +0000 (UTC) Received: from digimed.co.uk (shooty.digimed.co.uk [192.168.1.8]) by mail.digimed.co.uk (Postfix) with ESMTPA id A83ED26A5A for ; Tue, 28 Apr 2015 19:11:17 +0100 (BST) Date: Tue, 28 Apr 2015 19:11:12 +0100 From: Neil Bothwick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Hard drive storage questions Message-ID: <20150428191112.6f1914c4@digimed.co.uk> In-Reply-To: References: <553F474E.4040101@gmail.com> <553FA0DD.1090101@gmail.com> <20150428162448.160e1683@digimed.co.uk> Organization: Digital Media Production X-Mailer: Claws Mail 3.11.1-93-g43930e (GTK+ 2.24.27; x86_64-pc-linux-gnu) X-GPG-Fingerprint: 7260 0F33 97EC 2F1E 7667 FE37 BA6E 1A97 4375 1903 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/fQ3a9kA6OOjfwhFBWavemp0"; protocol="application/pgp-signature" X-Archives-Salt: 3afd7712-00f3-4132-8225-5de038e90f02 X-Archives-Hash: bf28ba59789ebacd2136e11a51097517 --Sig_/fQ3a9kA6OOjfwhFBWavemp0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Tue, 28 Apr 2015 13:38:55 -0400, Rich Freeman wrote: > > The same is also possible with BTRFS, including built in RAID. RAID5 > > in btrfs is expermiental, but its RAID1 is like RAID5 in some ways, > > such as giving the capacity of n-1 disks and tolerating a single disk > > failure.=20 >=20 > btrfs raid5 is still fairly experimental (though now it supports > recovery) and works more-or-less how you'd expect raid5 to work. > Raid1 on btrfs gives you the capacity of n/2 and not n-1 disks, You're right, I was clearly confused (an oxymoron?) when I wrote that. So RAID1 gives less capacity than RAID5 on BTRFS, but it is stable (in btrfs terms). --=20 Neil Bothwick This universe is sold by mass, not by volume. Some expansion may have occurred during shipment --Sig_/fQ3a9kA6OOjfwhFBWavemp0 Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlU/zUAACgkQum4al0N1GQNPdwCcCoUKXF6FHihktSkN2QWSCIVU dPIAn1hN59TjkRTMe8HPX5mEUSqU+GgN =BIgb -----END PGP SIGNATURE----- --Sig_/fQ3a9kA6OOjfwhFBWavemp0--