From owner-freebsd-isp Fri Dec 13 10: 5:29 2002 Delivered-To: freebsd-isp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 663D037B401 for ; Fri, 13 Dec 2002 10:05:28 -0800 (PST) Received: from cobra.acceleratedweb.net (cobra-gw.acceleratedweb.net [207.99.79.37]) by mx1.FreeBSD.org (Postfix) with SMTP id 6B64543EA9 for ; Fri, 13 Dec 2002 10:05:27 -0800 (PST) (envelope-from simon@optinet.com) Received: (qmail 53928 invoked by uid 106); 13 Dec 2002 18:10:01 -0000 Received: from 24-90-121-13.nyc.rr.com (HELO station1) (24.90.121.13) by cobra.acceleratedweb.net with SMTP; 13 Dec 2002 18:10:01 -0000 From: "Simon" To: "Dan Nelson" Cc: "freebsd-isp@FreeBSD.org" Date: Fri, 13 Dec 2002 13:07:18 -0500 Reply-To: "Simon" X-Mailer: PMMail 2000 Professional (2.10.2010) For Windows 2000 (5.0.2195;2) In-Reply-To: <20021213165625.GB91604@dan.emsphone.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: network backup Message-Id: <20021213180527.6B64543EA9@mx1.FreeBSD.org> Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I don't *just* want to make a backup. I want to back it up using an efficient method because I'm dealing with terabytes of data. I can't just back so much data daily over network and compress it. I have to do incremental backups and compression on the fly is a must to save disk space. I understand that rsync needs to be able to read local copy of the backup in order to sync files correctly, however, this can be done using on-fly compression, I just don't have/know the right tool. Tools like rar and zip can do this only locally and don't support large archive files; you have to break them up into many smaller ones, unless I missed something (i tried to zip/rar a lot of files and once the archive grew over gig or so in size, it errored out on me). Dump is a mess to work with, it doesn't work with directories nor with single archive file. You need to keep creating new dumps using different backup levels and I don't know how you will restore files for x user using all those little dumps when you need to efficiently. -Simon On Fri, 13 Dec 2002 10:56:25 -0600, Dan Nelson wrote: >In the last episode (Dec 13), Simon said: >> I have before I sent this email. And unless I misread it, -z is to >> compress on sending side to make rsync use less bandwidth in remote >> backups, not to compress data (on the fly) on the receiving (backup) >> end. > >rsync is for synchronizing two directories, and needs to be able to >read the files on both sides for the sync algorithm to work. If you >just want to back directories up, use tar, and add the 'z' flag to >compress the tarball. > >-- > Dan Nelson > dnelson@allantgroup.com > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message