² I realize having 2 disks in a laptop in RAID-1 sounds weird.

I've done it for nearly 20 years & it is amazing! 😯

* when traveling w/ X200, I would yank a drive from the T500 & leave a current backup at home in 10 seconds — rebuild array as soon as I get home.
* To preserve a long term backup 2x/year, yank out a drive & write the date on it & put it on shelf, buy a new disk.
* Linux software RAID-1 code does an amazing job optimizing parallel reads when in sync. I/O noticeably improves.

¹ As those who have seen my talks know, I use Lenovo T500/X200 laptops. in addition to various hardware problems, I've sadly been finding they aren't fast enough nor have enough RAM for my work.

I now travel with heavy T500 b/c I have work I can't effectively do on any work on an X200.

I know some will say I'm betraying Free Software or whatever by considering the #Framework laptop which has some blob firmwares.

For those who complain, see:
https://archive.fosdem.org/2019/schedule/event/full_software_freedom/
https://archive.fosdem.org/2020/schedule/event/open_source_won/