Thanks, that sounds like a good idea. Someone on reddit also suggested: Unraid Array: 1x16TB Parity, all other HDD as array disks; 34TB usable, fully protected Cache Pools: POOL #1 - btrfs raid1 of the 1x8TB + 1x4TB + 2x2TB. 8TB of usable space, fully protected. Use for appdata, system, domains, Docker/VM related shares. POOL #2 - single 1TB nvme SSD and use as an array cache for downloads / data, etc. Do you see any issues with this?