From owner-freebsd-fs@FreeBSD.ORG Fri Nov 4 20:31:45 2005 Return-Path: X-Original-To: freebsd-fs@freebsd.org Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 68C0916A41F for ; Fri, 4 Nov 2005 20:31:45 +0000 (GMT) (envelope-from user@dhp.com) Received: from shell.dhp.com (shell.dhp.com [199.245.105.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2D30743D45 for ; Fri, 4 Nov 2005 20:31:45 +0000 (GMT) (envelope-from user@dhp.com) Received: by shell.dhp.com (Postfix, from userid 896) id 646B43134B; Fri, 4 Nov 2005 15:31:44 -0500 (EST) Date: Fri, 4 Nov 2005 15:31:44 -0500 (EST) From: user To: freebsd-fs@freebsd.org Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: UFS2 snapshots on large filesystems X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Nov 2005 20:31:45 -0000 Hello, Considering a PC server running FreeBSD with 4 400 GB hard drives attached to a hardware raid controller doing raid-5. So this will present itself to the OS as a 1.2TB filesystem. Any comments on taking one or multiple snapshots of a filesystem of this size ? Given current disk capacities, I would not exactly consider this 1.2TB filesystem a "large" one ... any comments on say ... a 6-8 TB filesystem and making one or more snapshots of it ? Assume they are marginally busy - perhaps a 5-10% data turnover per day... Thanks.