From owner-freebsd-questions Thu Jan 10 14:21:27 2002 Delivered-To: freebsd-questions@freebsd.org Received: from smtp1.knology.net (user-24-214-63-226.knology.net [24.214.63.226]) by hub.freebsd.org (Postfix) with SMTP id 2AB1937B405 for ; Thu, 10 Jan 2002 14:21:21 -0800 (PST) Received: (qmail 9169 invoked from network); 10 Jan 2002 22:16:18 -0000 Received: from user-24-214-92-93.knology.net (HELO grumpy.dyndns.org) (24.214.92.93) by user-24-214-63-226.knology.net with SMTP; 10 Jan 2002 22:16:18 -0000 Received: (from dkelly@localhost) by grumpy.dyndns.org (8.11.6/8.11.6) id g0AMKra11034; Thu, 10 Jan 2002 16:20:53 -0600 (CST) (envelope-from dkelly) Date: Thu, 10 Jan 2002 16:20:53 -0600 From: David Kelly To: Scott Gerhardt Cc: Walter Betancourt , freebsd-questions@FreeBSD.ORG Subject: Re: Tape drives Message-ID: <20020110162053.B10968@grumpy.dyndns.org> References: <4.2.2.20020110145533.00a8a9a0@popd.betan.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from scott@gerhardt-it.com on Thu, Jan 10, 2002 at 03:25:20PM -0600 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 On Thu, Jan 10, 2002 at 03:25:20PM -0600, Scott Gerhardt wrote: > Question: > > My server has U160 Hot Plug SCA drives. > > Is it possible to "hot plug" another drive and use it as a removable backup > device. > How do you get FreeBSD to recognize the drive without a hard reboot? camcontrol(8) has a rescan function which will detect the addition of a new device, or removal of one. But before making use of your "hot plug" features I'd double and triple check that the drive will not disturb any other drive during insertion/removal. If you glitch the SCSI bus then you will corrupt a transaction. No telling what damage you might do. A sure fire safe option would be to dedicate a SCSI bus to the drive(s) which are going in and out. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message