Which part of `man mdadm` says that? My `man mdadm` shows: RAID devices are virtual devices created from two or more real block devices. This allows mul

Which part of `man mdadm` says that? My `man mdadm` shows: RAID devices are virtual devices created from two or more real block devices. This allows multiple devices (typically disk drives or partitions thereof) to be combined ... "Disk drives or partitions thereof". I couldn't spot the mention you're referring to.