

Msata and ssd, they are both sata and ssd.
Maybe one is faster because its newer or so, but there shouldn’t be much difference. Its not nvme, its msata.
I would slap the two disks in Linux software raid1 to leverage drive failure and use an external disk for backups, maybe over the network (local or remote).
If you don’t want to waste 50% of your space, use one disk as home, the other as root&boot&swap (is swap even a good idea? Maybe zram). Any extra space on the other dunnow… Mybe additional home space?
The idea rocks… Love it!
… Something that added to a Gentoo distribution would be amazing …