From owner-freebsd-hackers@freebsd.org  Wed Dec 23 12:13:20 2015
Return-Path: <owner-freebsd-hackers@freebsd.org>
Delivered-To: freebsd-hackers@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 E0933A507AD
 for <freebsd-hackers@mailman.ysv.freebsd.org>;
 Wed, 23 Dec 2015 12:13:20 +0000 (UTC) (envelope-from slw@zxy.spb.ru)
Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org
 [IPv6:2001:1900:2254:206a::50:5])
 by mx1.freebsd.org (Postfix) with ESMTP id CEE761877
 for <freebsd-hackers@freebsd.org>; Wed, 23 Dec 2015 12:13:20 +0000 (UTC)
 (envelope-from slw@zxy.spb.ru)
Received: by mailman.ysv.freebsd.org (Postfix)
 id CEA1EA507AC; Wed, 23 Dec 2015 12:13:20 +0000 (UTC)
Delivered-To: hackers@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 CE327A507AB
 for <hackers@mailman.ysv.freebsd.org>; Wed, 23 Dec 2015 12:13:20 +0000 (UTC)
 (envelope-from slw@zxy.spb.ru)
Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 8A7BC1876
 for <hackers@freebsd.org>; Wed, 23 Dec 2015 12:13:20 +0000 (UTC)
 (envelope-from slw@zxy.spb.ru)
Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD))
 (envelope-from <slw@zxy.spb.ru>)
 id 1aBheS-000HE7-EA; Wed, 23 Dec 2015 14:32:16 +0300
Date: Wed, 23 Dec 2015 14:32:16 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Stephen Hocking <stephen.hocking@gmail.com>
Cc: hackers@freebsd.org
Subject: Re: The minimum amount of memory needed to use ZFS.
Message-ID: <20151223113216.GA4535@zxy.spb.ru>
References: <CA+xzKjDQ_vUfgz4LvvcBE950=-ww7ukCbFmZz1vnzhGrNCucbQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CA+xzKjDQ_vUfgz4LvvcBE950=-ww7ukCbFmZz1vnzhGrNCucbQ@mail.gmail.com>
User-Agent: Mutt/1.5.24 (2015-08-30)
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Mail-From: slw@zxy.spb.ru
X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Dec 2015 12:13:21 -0000

On Wed, Dec 23, 2015 at 09:43:37PM +1100, Stephen Hocking wrote:

> Hi all,
> 
> Inspired by this article:
> http://arstechnica.com/information-technology/2015/12/rsync-net-zfs-replication-to-the-cloud-is-finally-here-and-its-fast/
> 
> I am wondering about changing my offsite back strategy, which currently is
> made up of a Raspberry Pi with an external 3TB drive sitting at my
> brother's house, with periodic manual rsyncs. I'd like to change that to
> doing zfs replications.
> 
> I want to use some of my ARM based hardware as the target for the ZFS
> replication, owing to its low power usage. I have a few Cubiboxes floating
> around with around 2G of RAM, and a RPI2 or a Banana Pi with 1G. It'd have
> a UFS root on the SD card, and ZFS on the external drive.
> 
> Any ideas?

I am do install FreeBSD i386 10 on the VirtualBox VM with 384M RAM and
successful pass `make buildworld`.

In the real world all depends on workload and minimal depends from FS
(UFS or ZFS).