I was going to say the same thing lol Sony lets you swap out your hard drive and it doesn't void your warranty. I have a couple buddies who have and when I finally decide to pick one up I will be doing the same.
"The My Passport X features USB 3.0 and a whopping 2 TB of storage. The large amount of space should be ample room for a number of titles; paired with the 500 GB of in-console storage, it gives you a total of 2.5 TB."
I was always bad at maths - glad that was added to the article. Thanks!
Considering the Microsoft recommends using an externally powered drive for expanding Xbox One storage, it makes more sense to use a 3.5" drive and either get a much lower price for 2 TB or more capacity for the same price. Personally, I have a 3 TB external that was less than $100 a year ago.
I think the author of this article made a mistake in saying people use larger HDD's for storing space hungry games and using an SSD for the OS. That defeats most of the purpose for most users which game to switch to SSD.
Everyone i know stores all their games and OS on the SSD, they store everything else on a large optical drive, like music, videos, data files etc.... This is because maps, textures, and ultimately levels load much faster and get you into the action much sooner.