My data is a raid5 (Linux MD raid) on top of which I have btrfs partition. They are 4 dad’s.

I have another raid5 on USB mechanical disks again MD raid5 + btrfs, which is my 1st level backup.

Os, Gentoo Linux, is on an nvme ext4, going to migrate to btrfs when I have time.

Server is a Ryzen 9 with 64gb ram that I also use for AI inference thanks to two Nvidia RTX A4000. Currently one on PCIe 16x and one on pcie 4x. I am waiting for a pci-e bifurcation card to move both cards on 8x 8x pcie bus… Splitting my CPU bound 16x lanes in two…