From owner-freebsd-questions@FreeBSD.ORG Thu Apr 14 21:18:57 2005 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 7CC7816A4CE for ; Thu, 14 Apr 2005 21:18:57 +0000 (GMT) Received: from rproxy.gmail.com (rproxy.gmail.com [64.233.170.193]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6815243D2F for ; Thu, 14 Apr 2005 21:18:56 +0000 (GMT) (envelope-from tummytech@gmail.com) Received: by rproxy.gmail.com with SMTP id j1so466518rnf for ; Thu, 14 Apr 2005 14:18:55 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=KMFp7OU34Ohp4MI3zIGJud+TlR1KeeeM7nVPLT2/yoHo2Bu+kqpbYa/yeBkLClPlRiT8G0+Ec/U9hmGrNzNFdkLOqteu2wjVmtEAIeUsB8xJJJPwtlFdq6Bq8cDsA2CuasT0XKp+P5XyCUMWh4KFDe/oJJGppSqO1GmzSt02b1w= Received: by 10.38.65.55 with SMTP id n55mr2268353rna; Thu, 14 Apr 2005 14:18:55 -0700 (PDT) Received: by 10.38.88.37 with HTTP; Thu, 14 Apr 2005 14:18:55 -0700 (PDT) Message-ID: <860807bf05041414183d26c683@mail.gmail.com> Date: Thu, 14 Apr 2005 14:18:55 -0700 From: Benson Wong To: Nick Pavlica In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <20050414104354.D30DC341FD@mxc1.crockettint.com> <860807bf0504141144550c3072@mail.gmail.com> cc: freebsd-questions@freebsd.org Subject: Re: 5.8TB RAID5 SATA Array Questions X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: Benson Wong List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Apr 2005 21:18:57 -0000 >From my experience mucking around with UFS1/UFS2 this is what I learned. On UFS2 the largest filesystem you can have is 2TB. I tried with a 2.2TB and it wouldn't handle it. I read somewhere that with UFS2 you have 2^(32-1) 1K-blocks and UFS1 supports 2^(31-1) 1K blocks per filesystem. That is essentially a 2TB max file system for UFS2 and a 1TB filesystem for UFS1. Ben =20 On 4/14/05, Nick Pavlica wrote: > > Is there any limitations that would prevent a single volume that large? > (if > > I remember there is a 2TB limit or something) > 2TB is the largest for UFS2. 1TB is the largest for UFS1. > =20 > Is the 2TB limit that you mention only for x86? This file system > comparison lists the maximum size to be much larger > (http://en.wikipedia.org/wiki/Comparison_of_file_systems). > =20 > --Nick > =20 --=20 blog: http://benzo.tummytoons.com site: http://www.thephpwtf.com