From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1OJ0uU-0001bz-MU for garchives@archives.gentoo.org; Mon, 31 May 2010 09:03:50 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id E1175E09E6 for ; Mon, 31 May 2010 09:03:49 +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 50865E08BB for ; Mon, 31 May 2010 08:09:17 +0000 (UTC) Received: from digimed.co.uk (grunthos.digimed.co.uk [192.168.1.4]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.digimed.co.uk (Postfix) with ESMTPSA id 92CCF6DED69 for ; Mon, 31 May 2010 09:09:16 +0100 (BST) Date: Mon, 31 May 2010 09:09:09 +0100 From: Neil Bothwick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: rsync to a USB stick Message-ID: <20100531090909.792da6d0@digimed.co.uk> In-Reply-To: References: <201005291001.50752.michaelkintzios@gmail.com> <20100529075931.5e49c2ce@osage.osagesoftware.com> <20100530114821.577a00bc@zaphod.digimed.co.uk> Organization: Digital Media Production X-Mailer: Claws Mail 3.7.6cvs9 (GTK+ 2.18.9; i686-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_/XrN=Q.4oaIZweJEPMiGeEaU"; protocol="application/pgp-signature" X-Archives-Salt: b6e1e8b3-a89a-4049-9f1d-debf37f3e7a3 X-Archives-Hash: 5058dfed77449a8afaa2b72d537b5c3c --Sig_/XrN=Q.4oaIZweJEPMiGeEaU Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 30 May 2010 14:20:36 +0000 (UTC), Grant Edwards wrote: > > You're assuming that each backup only writes once, which is far from > > true. If you mount a drive with the sync option, the FAT is updated > > for every block you write, so even a single file can cause thousands > > of writes to the same location. =20 >=20 > And you're assuming that the flash controller chip in the USB drive > doesn't do wear-leavelling. Even with wear levelling, writing in sync mode still does thousands of writes. They may be more spread out, but there are still a lot more than one per day and the previous assumptions are still false. --=20 Neil Bothwick Law of Mechanical Repair: After your hands become coated with grease, your nose will begin to itch. --Sig_/XrN=Q.4oaIZweJEPMiGeEaU Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) iEYEARECAAYFAkwDbqoACgkQum4al0N1GQPGcQCgldSkHjXfuxYw+izeRImt+8WV ghkAn2V+fsoP3fufw7nIg3ihf9L40h7M =EbHA -----END PGP SIGNATURE----- --Sig_/XrN=Q.4oaIZweJEPMiGeEaU--