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TrueNAS (www.truenas.com) uses ZFS for the storage layer across it's product range (storage software).

They have both FreeBSD and Linux based stuff, targeting different use cases.

I use TrueNAS (FreeBSD) version. ZFS makes keeping data snapshots and external backups a fairly easy process. It really cut down on server data management time. The only issue I found with it is there was a now long patched SMB bug a few years ago in the TrueNAS software that caused my storage pool to become corrupted after a large transfer. And there was no way for me to recover the data. It was all lost despite the disks still spinning and presumably still having most and the 1 and 0s recoverable.

Hopefully you had backups?

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