NVMe is not a hard disk
> RAID or storage replication in distributed storage <..> is not only useless, but actively undesirable<p>I guess I'm different from most people, good news!
When building my new "home server" half a year ago I made a raid-1 (based on ZFS) with 4 NVMEs. I rarely appear at that city, so I brought the fifth one and put it into an empty slot. Well, one of the 4 nvmes lasted for 3 months and stopped responding. One "zpool replace" and I'm back to normal, without any downtime, disassembly, even reboots. I think that's quite useful. When I'm there the next time I'll replace the dead one, of course.