From owner-freebsd-questions@FreeBSD.ORG Tue Mar 30 15:30:44 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6802516A4CE for ; Tue, 30 Mar 2004 15:30:44 -0800 (PST) Received: from smtp.covadmail.net (mx07.covadmail.net [63.65.120.67]) by mx1.FreeBSD.org (Postfix) with SMTP id D815743D2F for ; Tue, 30 Mar 2004 15:30:43 -0800 (PST) (envelope-from strick@covad.net) Received: (covad.net 3352 invoked from network); 30 Mar 2004 23:30:38 -0000 Received: from unknown (HELO mist.nodomain) (strick@covad.net@67.101.98.141) by sun-qmail10 with SMTP; 30 Mar 2004 23:30:38 -0000 Received: from mist.nodomain (localhost [127.0.0.1]) by mist.nodomain (8.12.9p2/8.12.9) with ESMTP id i2UNUeIo001025; Tue, 30 Mar 2004 15:30:40 -0800 (PST) (envelope-from dan@mist.nodomain) Received: (from dan@localhost) by mist.nodomain (8.12.9p2/8.12.9/Submit) id i2UNUebA001024; Tue, 30 Mar 2004 15:30:40 -0800 (PST) (envelope-from dan) Date: Tue, 30 Mar 2004 15:30:40 -0800 (PST) From: Dan Strick Message-Id: <200403302330.i2UNUebA001024@mist.nodomain> To: jdusek@cs.uiowa.edu cc: freebsd-questions@freebsd.org Subject: Re: Largest Hard Drive X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 30 Mar 2004 23:30:44 -0000 >> > What is the largest hard drive that FreeBSD can suppport? > Is there a limit? >> Since the block number in the kernel buf struct is still a 32 bit integer (in FreeBSD release 4.9 at least), I would guess that FreeBSD can handle at most a Terrabyte (2^40 bytes) or two (if the block number is unsigned) on a single hard disk. If you try to make a single file system that large, you may find that things like fsck don't scale very well. Dan Strick strick@covad.net