I am about to deploy my first btrfs filesystems on NVME. Does anyone have any hints or advice? Initially they will be root disks, but I am thinking about also moving home disks and other frequently used data to NVME, but probably not backups and other cold data.
I am mostly wondering about non-functionals like typical failure modes, life and wear, etc. Which might affect decisions like how to split different filesystems among the drives, whether to mix NVME with other drives (SSD or HDD), etc. Are NVME drives just SSDs with a different interface? With similar lifetimes (by bytes written, or another measure)? And similar typical failure modes? Are they better or worse in terms of firmware bugs? Error detection for corrupted data? SMART or other indicators that they are starting to fail and should be replaced? I assume that they do not (in practice) suffer from "faulty cable" problems. Anyway, I am hoping someone has experiences to share which might be useful. Graham
