I first started using zfs in 2005 when my hardware raid failed. Since then I’ve moved the disks to a new server in 2009 and replaced all the disks twice (one at a time for redirecting). Finally I built a new server this year. This time I’m using zfs send/recv to copy data to the new disks. The old server is still working 10 years later & its latest disks have been in use 24x7 for over 5 years now. Zpool scrub on the old server takes days now (compared to one hour on copied zpool on the new server).

Even back in 2009 I heard some Linux enthusiasts tell me how btrfs was going to be better than zfs!