The mid size versions have 3 drive bays (2x 3.5", one 2.5") plus an optical bay, but only 3 SATA connectors (which was really odd to me). You can find dual SATA adaptors for the "WiFi" M.2 slot if you want to use an adaptor for a 2.5" drive on the optical bay. But if you want more than 4 drives, you'll need to get creative mounting them.
I have to ask why on earth they would switch to C. I can only imagine the performance walls they were hitting in such a high computationally bound application, that forced their hand to rewrite the entire code in C of all languages.
I think you're confusing Elo (just a local company) with Pix, a government created interbank payment system. And from what I know of Pix, yes, we should all definitely copy that.
But we have to keep in mind that this is becoming a global standard
Fuck that bullshit. Fuck those idiots saying this is inevitable, that we have to proactively comply with laws that aren't even in the making. We don't. We won't. We'll fight every step of the way.
That's a pretty good rationale, actually.