i went for no LVM and no RAID. I also deleted the lvm-thin FS and created an ext4 one on a seperate 500gb HD, and mounted it on /var/lib/vz, so that I could "see" the images files. This describes the procedure:https://pve.proxmox.com/wiki/Installation:_Tips_and_TricksI'll try the USB passthrough and report back. I'd rather have the incremental dar archive every night if I can.