From owner-freebsd-questions Mon Oct 2 6: 0:31 2000 Delivered-To: freebsd-questions@freebsd.org Received: from probity.mcc.ac.uk (probity.mcc.ac.uk [130.88.200.94]) by hub.freebsd.org (Postfix) with ESMTP id 30E8E37B502 for ; Mon, 2 Oct 2000 06:00:28 -0700 (PDT) Received: from dogma.freebsd-uk.eu.org ([130.88.200.97]) by probity.mcc.ac.uk with esmtp (Exim 2.05 #4) id 13g5Ch-000ItQ-00; Mon, 2 Oct 2000 14:00:23 +0100 Received: (from jcm@localhost) by dogma.freebsd-uk.eu.org (8.9.3/8.9.3) id OAA97533; Mon, 2 Oct 2000 14:00:22 +0100 (BST) (envelope-from jcm) Date: Mon, 2 Oct 2000 14:00:22 +0100 From: j mckitrick To: cjclark@alum.mit.edu Cc: freebsd-questions@FreeBSD.ORG Subject: Re: dump levels/incremental backups Message-ID: <20001002140022.A97468@dogma.freebsd-uk.eu.org> References: <20000929033448.A59083@dogma.freebsd-uk.eu.org> <20000928200709.J81242@149.211.6.64.reflexcom.com> <20000929140633.A63505@dogma.freebsd-uk.eu.org> <20000929110713.A8019@149.211.6.64.reflexcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: <20000929110713.A8019@149.211.6.64.reflexcom.com>; from cjclark@reflexnet.net on Fri, Sep 29, 2000 at 11:07:13AM -0700 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG | 3 2 5 4 7 6 | There must be an easy way to express this as the inverted logic of how | a dump decides if a file is to be included, but I can't come up with | it right now. So you work backwards, taking dump levels in only descending order. I saw the explanation of tape rotation based on the Towers of Hanoi, and while they are related, there does not seem to be a direct correlation between the rotation method and the incremental series. I guess I'm just not seeing it. But I *do* get that it allovs you to balance size of backups and restoration effort. I still think my strategy works, where you work back taking every other day. jcm -- "I drank WHAT ?!" - Socrates To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message