From owner-freebsd-questions@freebsd.org Wed Jan 16 14:13:13 2019 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 138621489920 for ; Wed, 16 Jan 2019 14:13:13 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp.infracaninophile.co.uk [81.2.117.100]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.infracaninophile.co.uk", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 729596F53F for ; Wed, 16 Jan 2019 14:13:12 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from leaf.local (unknown [88.202.132.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: m.seaman@infracaninophile.co.uk) by smtp.infracaninophile.co.uk (Postfix) with ESMTPSA id 17A80174BB for ; Wed, 16 Jan 2019 14:13:09 +0000 (UTC) Authentication-Results: smtp.infracaninophile.co.uk/17A80174BB; dkim=none; dkim-atps=neutral Subject: Re: ZFS for raid To: freebsd-questions@freebsd.org References: <20190115225728.GA64342@geeks.org> <4BCA5FF06C331FA017C7B503@Pauls-MacBook-Pro.local> From: Matthew Seaman Message-ID: Date: Wed, 16 Jan 2019 14:13:08 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <4BCA5FF06C331FA017C7B503@Pauls-MacBook-Pro.local> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 729596F53F X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.97)[-0.972,0]; ASN(0.00)[asn:20712, ipnet:81.2.64.0/18, country:GB] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Jan 2019 14:13:13 -0000 On 16/01/2019 00:33, Paul Schmehl wrote: > Thank you Shawn, Matthew, John, and Doug for your responses. I will > start reading up on ZFS. The advice about an HBA and a small boot raid > plus data drives was very helpful as well as the comments about needing > plenty of ram. In my experience, you can just build a zpool and use it to both boot from and to hold all your data. Creating small boot RAIDs is unnecessary. The only exception to this is when you want a zpool that consists of so many disks the BIOS cannot see them all, in which case you need a smaller pool or somesuch to boot from. It is generally a bad idea to mix serious usage of ZFS and UFS in the same server: the different filesystems will tend to fight with each other over access to memory for caching, and performance will suffer. Cheers, Matthew