Well, that's the wrong impression. Here's some Arch documentation about it, basically you just create a btrfs on top of multiple devices and it works (to some

Well, that's the wrong impression. Here's some Arch documentation about it, basically you just create a btrfs on top of multiple devices and it works (to some extent with raid5/raid6 as well): https://wiki.archlinux.org/title/Btrfs#Multi-device_file_system https://wiki.archlinux.org/title/Btrfs#Multi-device_file_sys... . Raid1 apparently works fine. So if you want raid5/6, deploying on top of md is the better option.