From owner-freebsd-stable Thu Jul 11 23:53:35 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2B99E37B40F for ; Thu, 11 Jul 2002 23:53:29 -0700 (PDT) Received: from mail.allcaps.org (h-66-166-142-198.SNDACAGL.covad.net [66.166.142.198]) by mx1.FreeBSD.org (Postfix) with ESMTP id B55E343E5E for ; Thu, 11 Jul 2002 23:53:28 -0700 (PDT) (envelope-from bsder@mail.allcaps.org) Received: by mail.allcaps.org (Postfix, from userid 501) id 7E719153B7; Thu, 11 Jul 2002 23:53:27 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mail.allcaps.org (Postfix) with ESMTP id 731C815277; Thu, 11 Jul 2002 23:53:27 -0700 (PDT) Date: Thu, 11 Jul 2002 23:53:27 -0700 (PDT) From: "Andrew P. Lentvorski" To: Gerhard Sittig Cc: freebsd-stable@freebsd.org Subject: Re: Software raid 1 on root partition? In-Reply-To: <20020711232331.U1494@shell.gsinet.sittig.org> Message-ID: <20020711233706.G73169-100000@mail.allcaps.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 11 Jul 2002, Gerhard Sittig wrote: > And in all the thread's length I still question the benefit of > running your root fs in software RAID. Well, you can take a complete backup of the system simply by removing one of each pair of the RAID 1 drives if the root fs is also RAID 1. Given how cheap hard drives have gotten and how expensive high capacity backup systems are nowadays, removing one half of a RAID 1 array and replacing it with new drives is a really fast, cost-effective backup method. You can often buy a hard drive for not much more than a high-capacity (> 20GB) tape cartridge. And you can buy 50-100 drives for the price of a high-capacity automated tape drive. Several small engineering companies I know use this method. It generally is superior to tape backups until the company can actually afford an automated tape handling system. -a To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message