"c" was reality at a place I used to work. They had an old IBM mainframe and a huge tape archive going back to the 60s. There were several "silos" with tapes

"c" was reality at a place I used to work. They had an old IBM mainframe and a huge tape archive going back to the 60s. There were several "silos" with tapes that were frequently needed arranged inside, where they could quickly be loaded into readers by robot arms. Less frequently needed tapes were organized outside the silos on shelves. The mainframe managed the tapes itself, but did need the help of a few humans whose entire job was to read printouts requesting tapes to be swapped in and out between the silos and the shelves and go fetch them for the mainframe.