From owner-freebsd-questions Sat Jan 5 5:57:34 2002 Delivered-To: freebsd-questions@freebsd.org Received: from sage-american.com (sage-american.com [216.122.141.44]) by hub.freebsd.org (Postfix) with ESMTP id 7A31637B416 for ; Sat, 5 Jan 2002 05:57:31 -0800 (PST) Received: from SAGEONE (adsl-64-219-30-200.dsl.crchtx.swbell.net [64.219.30.200]) by sage-american.com (8.9.3/8.9.3) with SMTP id HAA10960; Sat, 5 Jan 2002 07:57:18 -0600 (CST) Message-Id: <3.0.5.32.20020105075715.01937458@mail.sage-american.com> X-Sender: jacks@mail.sage-american.com X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Sat, 05 Jan 2002 07:57:15 -0600 To: Chris Fedde , Sean Ellis From: jacks@sage-american.com Subject: Re: Mirroring Hard Disk Cc: "ScaryG" , freebsd-questions@FreeBSD.ORG In-Reply-To: <200201050634.g056YMx91713@fedde.littleton.co.us> References: <62178761821.20020104222538@telus.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG My main objective was to have the 2nd HD keep up with a current copy of the first HD and in the event the first (main one) failed, then I could just switch HD and reboot into the HD2... sounds like a good idea. Just need the right tools... Been looking at dump too, but thought there was a tool that would keep the two HDs sync'd, i.e., when a file changed on HD1, the HD2 would do the same. ...not sure Vinum will do this as it wants to copy partitions....(at first reading). At 11:34 PM 1.4.2002 -0700, Chris Fedde wrote: >On Fri, 4 Jan 2002 22:25:38 -0800 Sean Ellis wrote: > +------------------ > | When I recently asked about cloning a hard drive I was offered a > | couple of leads for a daily mirroring of a hard drive. I'm not > | sure if mirroring the drives on a daily basis would be suitable for > | what jacks is asking about, but I'd be interested for any comment on > | using rsync or dd as means of keeping two drives relatively > | synchronized. > +------------------ > >Depending on your needs, and your availability requirements, I'd >think of using dump | restore. You can use dd to do this kind of >thing but it will copy the whole disk (or partition). Including >all the parts that have not been used yet. this can take a long >time. Plus dd does not have any way to do incremental backups. A >big time saver for the huge modern drives. > >Rsync and rdist are good options too if you want to operate on a >directory hierarchy basis. Dump/Restore work on a file system basis. > >-- > Chris Fedde > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message > > Best regards, Jack L. Stone, Server Admin Sage-American http://www.sage-american.com jacks@sage-american.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message