Comment 2TNM Re: Use ZFS send/receive.


Backing up FreeNAS to external drives


Use ZFS send/receive. (Score: 2, Interesting)

by on 2014-10-22 22:48 (#2TKR)

Use zfs send/receive..either locally or via network. It should work great with minimal fuss. As to restoration FreeBSD/Linux/OpenSolaris should all work just fine. A backup doesn't need to be read by "anything", afterall..just read by something sufficiently common.

Re: Use ZFS send/receive. (Score: 1)

by on 2014-10-23 16:42 (#2TMN)

Good tips - that's my future strategy, once this one "ages" out. For the moment though, it's working well and I'm happy with it. You're right that backups don't have to be read by anyone other than the receiving system, but it's a nice bonus if you can test the drives' readability on a different machine/system, just to verify the writes are happening and the data is being correctly backed up. I had a database nearly get destroyed because I didn't verify the backups, and when it came time to use them I discovered to my horror they were bad. I won't forget that feeling soon, let me tell you.

Bryan makes some good points about the lack of universal file systems, too. NTFS, UFS, ZFS, HFS+ all have their positives and negatives, but it would be nice if manufacturers and systems-builders took into consideration of the need for something more transversal. FAT as a lowest common denominator is really f*cking low.

Re: Use ZFS send/receive. (Score: 1)

by on 2014-10-24 00:05 (#2TNM)

So load the backup on another machine of any ZFS-supported-OS. Perhaps for added benefit use one that isn't the originating platform. Since you seem to be sourced from FreeBSD, why not use one of the opensolaris variants? Import the disks, run a ZFS scrub(this is by definition how you're supposed to verify data)...and feel safe :)

For more familiarity Linux has a native ZFS implemenation now as well.

It truly would be great if certain commercial operating systems adopted ZFS. Their filesystems often seem dinosaur-like in comparison..because they are.

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