[uncial]

Yeah, I'm not 100% sold on "drive". There's a few competing ideas here -- initially I called it a "loom", but then I wanted to lean more into the analogy of loading a disk, so "drive" kinda won out.

I get the feeling there's some word in the vicinity of "clock" that I'm missing. Something like "metronome", "pulse", "synchronizer" etc -- because you're right, the (primary) purpose of the drive is to deliver phase information to the disks. Drawing a bit of a blank tho.

(Thank you for the feedback and encouragement!)