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 1OIjOP-0008BS-DW for garchives@archives.gentoo.org; Sun, 30 May 2010 14:21:33 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 4F91CE0439; Sun, 30 May 2010 14:20:56 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id 22F8DE0881 for ; Sun, 30 May 2010 14:20:56 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id B4D061B40A1 for ; Sun, 30 May 2010 14:20:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at gentoo.org X-Spam-Score: -3.099 X-Spam-Level: X-Spam-Status: No, score=-3.099 required=5.5 tests=[AWL=-0.500, BAYES_00=-2.599] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6hZd7dDJ8WTa for ; Sun, 30 May 2010 14:20:49 +0000 (UTC) Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by smtp.gentoo.org (Postfix) with ESMTP id EB4641B409E for ; Sun, 30 May 2010 14:20:48 +0000 (UTC) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OIjNc-000288-BC for gentoo-user@gentoo.org; Sun, 30 May 2010 16:20:44 +0200 Received: from jolson120499.dsl.visi.com ([209.98.66.217]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 30 May 2010 16:20:44 +0200 Received: from grant.b.edwards by jolson120499.dsl.visi.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 30 May 2010 16:20:44 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org connect(): No such file or directory From: Grant Edwards Subject: [gentoo-user] Re: rsync to a USB stick Date: Sun, 30 May 2010 14:20:36 +0000 (UTC) Message-ID: References: <201005291001.50752.michaelkintzios@gmail.com> <20100529075931.5e49c2ce@osage.osagesoftware.com> <20100530114821.577a00bc@zaphod.digimed.co.uk> 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: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: jolson120499.dsl.visi.com User-Agent: slrn/pre0.9.9-102 (Linux) X-Archives-Salt: ae16e2a3-5408-4166-9cc6-3ec69ba7674f X-Archives-Hash: 2abc1aaf1351ccc0d937b1963157ba37 On 2010-05-30, Neil Bothwick wrote: > On Sat, 29 May 2010 07:59:31 -0400, David Relson wrote: > >> Indeed flash drives _do_ have a lifetime. My recollection is that it's >> in the thousands of writes if not the hundreds of thousands of writes. >> Assuming a life of 1,000 writes and you backup once daily, that's 3 >> years of backups. 10,000 writes would be 30 years. Of course if you >> backup every hour, 10,000 writes is a year (or so). > > 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. And you're assuming that the flash controller chip in the USB drive doesn't do wear-leavelling. -- Grant