Does it work? :-)
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I haven't had a chance to try zfs-on-Linux, but it's been rock solid on FreeNAS. Snapshots alone are a pretty killer feature. Performance is lacking for Z2, the same way it is for hardware RAID6, but there are other configurations with better performance. I just chose redundancy.
CephFS has snapshots (as does RBD), and can do arbitrary erasure codings decoupled from the actual number of disks. I trust the layered Ceph model than the single blob that ZFS is - if ZFS screws up my data is more than likely gone. Switched my backup server to Ceph already.
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In contrast, at home, I still have xfs on md-raid6 for now and performance is great (software RAID6 is very optimized these days). I did get myself into a SNAFU situation w/RAID6 once and was able to surgically fix it, since I *understand* RAID6. Can't say the same for zfs.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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