Hand-scanners are pretty standard, as well as RFID photo-cards + pin, video surveillance and a good anti fire system. It's pretty much the baseline of what you'd expect for a building that houses several millions worth of hardware.
The man-trap does indeed seem extra (haven't seen one myself), but I'm a bit wary about the value it adds beyond certain james bond scenarios...
Moreover if you're really paranoid about physical access then you'd better go to one of the underground facilities like those in abandoned bank caves or bunkers.
Your standard warehouse-type datacenter usually has walls so thin that a dedicated thief could trivially flex through them in a minute, after climbing over the (often not very high) fence. Sure, he might set some alarms off in the process, but I wouldn't bet my $treasure on the single underpaid guard that commonly serves the nightshift in these buildings...
Yeah, got a bit carried away here, but we were talking James Bond scenarios, right?