Date: Tue, 28 Apr 1998 21:56:58 -0400 (EDT) From: "David H. Brierley" <dave@galaxia.com> To: Karl Pielorz <kpielorz@tdx.co.uk> Cc: isp@FreeBSD.ORG Subject: Re: Can dump & restore really be this simple? Message-ID: <Pine.BSF.3.96.980428215025.6734B-100000@trantor.galaxia.com> In-Reply-To: <35464BED.8F8A1653@tdx.co.uk>
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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
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