2x 256gb (512gb, I can't remember; code is tiny and I use less than 100gb) M2 SSDs.
2x 2TB 5400rpm HGST disks that spend most their off. But I have these almost full of video.
Do you need that much in a luggable? I would have that setup on a desktop, having that in my portable machine would remove most of the advantages of it (for me at least)?
I have never tried to bring it on a plane, I suspect they would charge me for an extra ticket because the laptop is too heavy. Seriously, I would bring one of my smaller machines if I planned on being mobile multiple times through the day. I have clevo ultrabook, access to a macbook air through one of my jobs and a small collection of netbooks, if I don't need much I might just stick with my phone (or a tablet) and a bluetooth keyboard.