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 E5FF913877A for ; Tue, 24 Jun 2014 17:07:56 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id F4095E0966; Tue, 24 Jun 2014 17:07:38 +0000 (UTC) Received: from mail-we0-f171.google.com (mail-we0-f171.google.com [74.125.82.171]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id DA1F2E0909 for ; Tue, 24 Jun 2014 17:07:37 +0000 (UTC) Received: by mail-we0-f171.google.com with SMTP id q58so694500wes.16 for ; Tue, 24 Jun 2014 10:07:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=bmArSMZW+JnRrGGPWNYqXaEP0MbqlXX41LXG+WhdEMo=; b=ORYiA/5k1QnvR0A7RnWAtYGd3BNZ5dr/kgRdHcCoYx/67wLytHX8NOr7QO+jtBYDmy zlrifbjD16ei9J5nvDwv+pK3WXv0OxiBuRwTbhti2pzmMcuezV4BMIqJJoG2PDk2j7OZ hT7HgfoNr9T007X6Qo+S1H297o5C2DHJrQuZjvcuw6KCW8qcBHOADTQyuzmnFd/KNEeq Hw3mCcFtSQDZRzO1Kb4fDA9gE6wVZXI4/uHgk1zPmDknlNbkbIHg8QAN0Z8T8nS9O8hU qBcCjaE0BthNx39ryxDX1TXdN5ZDTEpB+LIoGxwq9+1+0lvFz6ryOHBZJJySiby1vaD1 vw6Q== X-Received: by 10.180.10.168 with SMTP id j8mr691251wib.73.1403629646323; Tue, 24 Jun 2014 10:07:26 -0700 (PDT) Received: from [172.20.0.43] (196-210-127-155.dynamic.isadsl.co.za. [196.210.127.155]) by mx.google.com with ESMTPSA id ge6sm16806063wic.0.2014.06.24.10.07.24 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 24 Jun 2014 10:07:25 -0700 (PDT) Message-ID: <53A9B01A.8030908@gmail.com> Date: Tue, 24 Jun 2014 19:06:34 +0200 From: Alan McKinnon User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 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 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] backup hardware setup References: <20140624144307.GA3908@solfire> In-Reply-To: <20140624144307.GA3908@solfire> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Archives-Salt: 54bbbcd1-d71a-447e-a266-da4551b4c7c3 X-Archives-Hash: e42b960bf4f85126cfffb9bb7dd521b5 On 24/06/2014 16:43, meino.cramer@gmx.de wrote: > Hi, > > I bought two identical external harddrives, USB 3.0, with 1 TByte each > (no SSD - the good ole mechanical ones...;). > > The intended use is for backup of longer files. The drives will > contain the same contents. > > Currently there are still "clean metal" (no partitioning, no fs). > > Data integrity and recoverability (Uhhh...that words looks wrong...) in > case of an desaster is more important than speed. > > What is the recommended way of partitioning ? > What filesystem to choose? > > > Thank you very much in advance for any help! > Best regards, > mcc > > > PS: Running vanilla kernel 3.15.1.... You haven't given much in the way of detail, so I assume you have regular needs, nothing fancy, and it's all a bunch of files right? In that case, partitioning and filesystem type are largely irrelevant as long as you don't have corruption. With one caveat: You must always make sure the source drive is intact and ok. If not, and you back it up anyway, then you are already toast (you will overwrite your last backup with new faulty data). There's several approaches to how to do the transfer: If you have say a general fileserver with lots of files that don't change much or often, just rsync everything in one go. There is no optimization you can do that will perform much faster than rsync. If you have a big busy filesystem that changes often and lots, then use lvm (or anything that can make snapshots) and rsync that. If you have a huge database where everything is changing all the time, don't do filesystem copies, use the tools provided by the db vendor. I doubt this is your need as you would have said so, but it's worth mentioning. -- Alan McKinnon alan.mckinnon@gmail.com