From owner-freebsd-questions@FreeBSD.ORG Wed Feb 20 01:42:50 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id CF82FF1E for ; Wed, 20 Feb 2013 01:42:50 +0000 (UTC) (envelope-from iamatt@gmail.com) Received: from mail-wi0-f176.google.com (mail-wi0-f176.google.com [209.85.212.176]) by mx1.freebsd.org (Postfix) with ESMTP id 6C3A483D for ; Wed, 20 Feb 2013 01:42:49 +0000 (UTC) Received: by mail-wi0-f176.google.com with SMTP id hm14so5586934wib.15 for ; Tue, 19 Feb 2013 17:42:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=0RhLrcVM5ftjeI1m8jWejTJLG8xadvAScFpL6p1oZeM=; b=gryiKDzU1PuqHrAA9pjdLPnb7Zq8MLcCYAtjyQtyQ84KjXCu6RPlGmO966OBT+f5UM iybRRpBF/28R590e8kCwrLL2MYIB4D/m0iPKJ3um9+JGdsyJdAjXt2lmdVft+U5/47gd BjuFBIRZKSg/lb5TWHQYYrEHk323C//T4E4ClqyqMYPRmXzIgc1kpDb3ebWGW6jDChyY SSzGH3tujcDDsE9L5+eNGbYjEuMR/oleJ0602s4NnO6TV6qs1/Hdc/xu6ZnNq4lHcUb8 5zgaP+iNBzUWRhK/M5ZOeKMbUnJVFaH5eA8hHE8nxtctVC4osuD/Imu/QYP9hsJU1PP4 ANZw== MIME-Version: 1.0 X-Received: by 10.194.174.196 with SMTP id bu4mr30185317wjc.35.1361324569008; Tue, 19 Feb 2013 17:42:49 -0800 (PST) Received: by 10.216.59.146 with HTTP; Tue, 19 Feb 2013 17:42:48 -0800 (PST) Received: by 10.216.59.146 with HTTP; Tue, 19 Feb 2013 17:42:48 -0800 (PST) In-Reply-To: References: <93B2D1C4-8887-45F9-9939-A099AC5E3DA0@todoo.biz> Date: Tue, 19 Feb 2013 19:42:48 -0600 Message-ID: Subject: Re: ZFS + iSCSI architecture From: iamatt To: Fleuriot Damien Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Feb 2013 01:42:50 -0000 Sounds like a major headache. I'd just deploy NetApp with OnTap 8.X or isilon, both BSD based now. On Feb 19, 2013 7:15 PM, "Fleuriot Damien" wrote: > > On Feb 19, 2013, at 11:20 PM, "bsd@todoo.biz" wrote: > > > Hello, > > > > > > I am about to start deploying a large system (about 18 To which can gro= w > up to 36 To) based on a big Intel platform with lot's of fancy features t= o > have turbo boosted platform (ZIL on SSD + system on dongle if I go for > FreeNAS). Since I want to move on quite fast I might decide to use FreeNA= S > in it's latest version. > > > > > > The idea behind all that was to grant 5 or six critical servers access > to the NAS so that they can take advantage of : > > > > 1. space available on the NAS > > > > 2. ability of the NAS to use ZFS and of clients to support this file > system (including snapshots) > > > > 3. Access the server using iSCSI (at least this is what I initially > planned). > > > > 4. Mount part of their filesystem using data stored on the SAN (like > /usr/local/ or other parts of the system). > > > > > > > > The server accessing the data will be of two types : > > > > 1. 2 x Ubuntu server 10.04 LTS > > > > 2. 4 x FreeBSD (mainly 8 and 9) with jail configured > > > > > > I have started reading about iSCSI and potential problems with FreeBSD. > > > > What problems do you mean ? > > > > > So my main questions would be : > > > > > > =E2=80=A2 Should I go for iSCSI ? > > > > Well in all use cases, iscsi should perform faster than NFS. > > > > > =E2=80=A2 Should I rather choose / prefer NFS ? > > > > =E2=80=A2 Should I export a Volume as UFS rather than ZFS (is ZFS suppo= rted as a > target) ? > > > > I'm not sure what you mean here, when you export a zvol over ISCSI: > - your SAN is the target and presents a block device (the zvol) > - your client is the initiator > - your client attaches to the ISCSI drive and formats it using filesystem > XYZ, be it ext3, ufs or ntfs > > > > > > > > The main idea is stability, redundancy of data and ease of maintenance > (in a headless FreeBSD / Linux world) before anything else ! > > > > ISCSI is a bit harder to setup IMO, however I think it''s more reliable > than NFS, what with its auto retries if it loses the network link to a > device. > > > > > > > > > That's the big pictures, if you have any pointers, advise, they are all > welcome. > > > > > > It is quite late where I leave, so I will reply to posts in 8 to 10 > hours, but I hope to have enough answer(s) to start an interesting thread > (as I think this question is very interesting and not so clearly explaine= d > (at least in my mind))=E2=80=A6 > > > > This is idd a very interesting topic and I hope to see more :) > > > > > > > Thx very much for your infos and feedback. > > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >