From owner-freebsd-questions@FreeBSD.ORG Mon Jul 26 19:05:30 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 172EB106566C for ; Mon, 26 Jul 2010 19:05:30 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout028.mac.com (asmtpout028.mac.com [17.148.16.103]) by mx1.freebsd.org (Postfix) with ESMTP id F3DB88FC1C for ; Mon, 26 Jul 2010 19:05:29 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from cswiger1.apple.com ([17.209.4.71]) by asmtp028.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0L6600E3UICH3P40@asmtp028.mac.com> for freebsd-questions@freebsd.org; Mon, 26 Jul 2010 12:05:06 -0700 (PDT) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1004200000 definitions=main-1007260141 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.0.10011,1.0.148,0.0.0000 definitions=2010-07-26_04:2010-07-26, 2010-07-26, 1970-01-01 signatures=0 From: Chuck Swiger In-reply-to: <4C4DDA28.4070205@identry.com> Date: Mon, 26 Jul 2010 12:05:04 -0700 Message-id: <980022A0-7623-40A5-BCDE-4909A721933D@mac.com> References: <4C4DDA28.4070205@identry.com> To: John Almberg X-Mailer: Apple Mail (2.1081) Cc: freebsd-questions@freebsd.org Subject: Re: 1 file system, 2 drives? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 Jul 2010 19:05:30 -0000 Hi, John-- On Jul 26, 2010, at 11:55 AM, John Almberg wrote: > I know this is probably impossible, but FreeBSD can do so many miraculous things, that I can't help asking... > > Is it possible to use the second drive to 'expand' the /videos file system? So it would miraculously look like a single 400G drive? The canonical way of doing this is to either create a RAID-0 concat or stripe volume. Using RAID-0 striping is preferred due to performance, but you'd need to backup, reformat using a RAID-0 stripe, and then restore your data onto the new volume. In theory, setting up a concat is less intrusive, but if the data is already mounted and in use, you'll probably still need to unmount it first. If you have hardware controller with RAID capabilities, using native RAID is better, otherwise look towards gvinum or maybe ccd; see also: http://www.freebsd.org/doc/en/books/handbook/raid.html Regards, -- -Chuck