I seem to recall a certain former NSA affiliated person speaking on the conjecture of NSA Full Capture from fiber optic taps at a HOPE conference many many years ago. The statements alluded to automated custom robotic “drive shufflers” for even the tape and drive libraries already in use at that time, and heavily implied that in some cases exotic storage was being handled by Rube Goldberg style computer assisted robotically serviced storage libraries that would make even HAL jealous.