From owner-freebsd-isp Tue Apr 28 18:58:12 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id SAA08019 for freebsd-isp-outgoing; Tue, 28 Apr 1998 18:58:12 -0700 (PDT) (envelope-from owner-freebsd-isp@FreeBSD.ORG) Received: from trantor.galaxia.com (terminus.galaxia.com [204.255.210.97]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id SAA07858 for ; Tue, 28 Apr 1998 18:57:50 -0700 (PDT) (envelope-from dave@galaxia.com) Received: from localhost (dave@localhost) by trantor.galaxia.com (8.8.7/8.8.7) with SMTP id VAA16549; Tue, 28 Apr 1998 21:56:59 -0400 (EDT) (envelope-from dave@galaxia.com) Date: Tue, 28 Apr 1998 21:56:58 -0400 (EDT) From: "David H. Brierley" To: Karl Pielorz cc: isp@FreeBSD.ORG Subject: Re: Can dump & restore really be this simple? In-Reply-To: <35464BED.8F8A1653@tdx.co.uk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Tue, 28 Apr 1998, Karl Pielorz wrote: > I've always backed up my system with FreeBSD's dump command, e.g. > > dump 0auf /dev/nrst0 / ... > After I've run a dump at level 0 (zero), can I just keep running dumps at > level 1 until I decide I need / want to do another 'full' dump? Yes, it really is that simple. You can also make it as complex as you want. If you take the simple approach and do the occasional level 0 backup and daily level 1 backups, each level 1 backup will contain everything that has changed since the most recent level 0. This means that your backups will get larger and larger every day. I have used this scheme quite successfully on a variety of production servers. This method even has a very distinct advantage: if you blow out a disk drive you only ever have to load 2 tapes to rebuild it, the level 0 and the most recent level 1. -- David H. Brierley UNIX System Consultant dave@galaxia.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message