Date: Wed, 23 Dec 2015 23:14:45 +1100 From: andrew clarke <mail@ozzmosis.com> To: Stephen Hocking <stephen.hocking@gmail.com> Cc: hackers@freebsd.org Subject: Re: The minimum amount of memory needed to use ZFS. Message-ID: <20151223121445.GA85016@ozzmosis.com> In-Reply-To: <CA%2BxzKjDQ_vUfgz4LvvcBE950=-ww7ukCbFmZz1vnzhGrNCucbQ@mail.gmail.com> References: <CA%2BxzKjDQ_vUfgz4LvvcBE950=-ww7ukCbFmZz1vnzhGrNCucbQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed 2015-12-23 21:43:37 UTC+1100, Stephen Hocking (stephen.hocking@gmail.com) wrote: > 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'm curious about this too. Currently I run a root-on-ZFS FreeBSD 10.2 amd64 system with 2 GB RAM that I use for offline backups. The ZFS pool consists of 2 x 1 TB drives in a mirror setup. I've never had FreeBSD run out of memory on that machine. I suggest you avoid using the deduplication feature of ZFS which from what I understands likes to chew through memory. I don't use ZFS snapshots on that machine, so can't speak about their memory usage. Perhaps it's fairly insignificant, though. An alternative might be to use something like rsnapshot, still on ZFS. You might get a bigger audience if you ask on the freebsd-questions list. Regards Andrew
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20151223121445.GA85016>