It is designed around the OpenZFS filesystem, which enables many of the advanced features of FreeNAS such as data integrity, early indication of faulty drives, and the ability to boot into a previous working copy of the operating system after a failed upgrade.It is based on the highly secure FreeBSD operating system and follows security best practices in development. The benefit of using a NAS is that all your important files can be stored in a central location, allowing you to access them from multiple devices simultaneously, while also keeping our backupdata and redundancy resources in one place. FreeNAS uses the ZFS file system, which supports high storage capacities and integrates file systems and volume management into a single piece of software. It is an operating system that can be installed on virtual machines or in physical machines to share data storage via computer network.The FreeNas Project and software were originally founded by Olivier Cochard-Labbe in 2005 on the principle that network storage be made available to the world at no coast. ConclusionĪs of know i probably will use FreeBSD as the receiving side instead or save the snapshots to file and upload to cloud storage.FreeNAS is an open source storage platform based on Freebsd and supports sharing across Windows,Apple and Unix-like systems. Then do a manual login from the FreeNAS host to add the ubuntu host to known_hosts. # paste the contents of your FreeNAS root id_rsa.pub here On your ubuntu host # if not already exists Login as root and Set up SSH keys on your FreeNAS host.Ĭopy the contents of /root/.ssh/id_rsa.pub Zfs send -v | ssh myhost zfs receive -v myotherpool/newdatasetįor the above to work ssh keys needs to be set up between hosts. Send snapshot to another host with ssh(to overwrite existing datataset use -F on the receive command) Zfs send can be used to send a snapshot to standard output. $ sudo zpool create pool-test /home/user/example.img Installing ZFS on linux(0.7 RC on ubuntu trusty 14.04) $ sudo add-apt-repository ppa:zfs-native/dailyĬreate a simple lab ZFS pool with a file vdev(4GB) $ dd if=/dev/zero of=example.img bs=1M count=4096 Then i found this PPA which only has package for trusty(14.04) so installed trusty and used the precompiled packages. So i tried to compile the sources but got lost somewhere after all those steps required. Anyhow in 0.7 of ZFS on linux this problem seems to have been fixed. It’s funny because the OpenZFS initiative did a change to use feature flags instead of version numbers to make compatibility less of a problem. It turns out that FreeBSD uses a new version of ZFS that makes the receiving side hang with 100% CPU usage as described here #5999. Of course things got out of hand i’ve struggled for some hours with the ZFS replication to a ubuntu host that i’ve prepared. Snapshots can easily be rollbacked, replicated to another machine or mounted at another path. A snapshots diskpace is only the changes in the dataset that has happened which makes it disk space effective. Snapshots is a really nice feature of ZFS which is can be seen as point-in-time copy of a dataset. In FreeBSD ZFS comes builtin but with linux because of licens issues you have to install ZFS manually. When looking at options for backing up the data on FreeNAS i started digging into ZFS with it’s snapshot and replication capabilities. The setup is running on a mirror boot device(2x USB drives) with one mirrored volume for data(2x 500GB leftover drives).įreeNAS is built on top of FreeBSD and ZFS(OpenZFS). I’m using FreeNAS which has some SMB shares and a jail running Nextcloud. Recently i’ve have set up an old computer to be used as NAS.
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