Man beware of m.2 they might not be reliable as older technologies on the long run especially that problems are starting to appear with first generation ssd's. Especially with that raid 0 you will have 2 bricks if one bites the dust!The msi comes with two m.2 bays (which are tiny little ssd drives) and one 2.5 bay. Just upgraded it to two 256g m.2 SSD in raid 0 mode and changed the platter drive 1T 2.5 for storage to a 2.5 1T SSD. So quadrupled my OS and app drive and stayed the same on storage drive but switched to the cooler and faster SSD. Now I actually have reasonable room on the laptop to install games. Utterly amazing how small all that stuff is now as the laptop is still 1/2" and csn pick it up with two fingers.
But I can't migrate my OS from the clone over to the raid drive and get it recognized in the bios boot menu, even though in the drive info section it shows it as a bootable drive. It's maddening, which is why i hate doing computer work. Plus I had to disassemble the entire laptop, remove the MB just to install those damn m.2 drives. Everything works proper on the drives other than allowing it in the boot menu. So booting from the cloned drive.
Make use of that 1 Tera and backup daily I say.