Since I don't use my laptop's CD-drive I want to put a small (8 GB) SSD into the CD-drive slot (I'll use a caddy similar to this one). I want to use compressed btrfs on the SSD and put all the data on the big HDD.
Is it viable to do a RAID 1 with SSD and a same-size partition of the HDD?
Maybe even remount the RAID -o degraded after boot and spin down the HDD :-) ?