Yes your browser tracks all of this, movement, hover, clicks etc. It’s how pages are able to respond to various mouse gestures.

Yea they’re internal. That’s normal for a fully loaded 2u storage server. Some even have 2-4 extra disk slots in the rear to cram in a few more.

I concur and it just gets worse the more hardware you have in them. 256G of memory and 24 disks? Might as well go have lunch while it boots.