From owner-freebsd-questions@freebsd.org Wed Sep 9 16:12:33 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3E8BB9CCCA5 for ; Wed, 9 Sep 2015 16:12:33 +0000 (UTC) (envelope-from allan@physics.umn.edu) Received: from mail.physics.umn.edu (smtp.spa.umn.edu [128.101.220.4]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 1F4081198 for ; Wed, 9 Sep 2015 16:12:32 +0000 (UTC) (envelope-from allan@physics.umn.edu) Received: from spa-sysadm-01.spa.umn.edu ([134.84.199.8]) by mail.physics.umn.edu with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.77 (FreeBSD)) (envelope-from ) id 1ZZhyz-000IQB-Qv for freebsd-questions@freebsd.org; Wed, 09 Sep 2015 11:12:25 -0500 Message-ID: <55F05A55.1080500@physics.umn.edu> Date: Wed, 09 Sep 2015 11:12:05 -0500 From: Graham Allan User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: Storage question References: <55EF3D23.5060009@hiwaay.net> <20150908220639.20412cbd@gumby.homeunix.com> <55EF5409.8020007@yahoo.com> <55EFC2DA.3020101@hiwaay.net> <5EB5C2C2-575B-40BD-BF6A-85F396C058FE@kraus-haus.org> <55F058FC.6080204@hiwaay.net> In-Reply-To: <55F058FC.6080204@hiwaay.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Sep 2015 16:12:33 -0000 On 9/9/2015 11:04 AM, William A. Mahaffey III wrote: > > Hmmmm .... could you amplify on that point about no compression w/ > MythTV ? This box will have 16 GB of RAM & 32 GB of swap, so I *think* I > will be OK on RAM. I will probably stream video over my network most of > the time, but might be using the ZFS as well .... I just got done > copying the stuff from > https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE verbatim into > 2 shell scripts to automate the setup, but if there are known issues w/ > MythTV & ZFS+compression, more rethinking will be needed. Just that media files tend not to compress further. I have ZFS on my home NAS box too, and though I do still have compression enabled I shouldn't because the compression ratio is 1.00! I also wouldn't hesitate to use ZFS on a machine with 16G or 8G RAM. The system installer does a fine job of setting it up for you (including a separate partition for swap). G.