I added a 256GB mSATA SSD to my Lenovo x220 of which I planned to use a nice chunk as L2ARC for the SATA HDD. Even without a SATA disk present the SSD showed up as HDD2 in the BIOS.
Made a fresh installation of FreeBSD 10.2 amd64 with the memstick image and chose ZFS+Geli. Booted, worked, everything just fine. I added a