The only Control Data hardware I ever saw was a 10MB (5 internal, 5 removable) 14” hard disk drive used with my dad’s Alpha Micro system. A few years later he bought a 20MB Winchester drive the size of a VCR. It could fit inside the bottom of the CDC cabinet. It blew my mind.
Control Data Corporation Magnetic Peripherals division used to make removable hard disks (844’s) and 885’s for all the mainframe vendors. Magnetic Peripherals became Imprimis and was sold to Seagate.
You’ve see a Control Data mainframe I bet. They had one in the Nokitome Plaza in Die Hard 1, and I think (someone will correct me on this) they had one in Jurassic Park.
I worked on the OS for the 6000 series (Scope 3.3-3.4 and NOS/BE), 170 series (NOS/BE and NOS), the 7600 (Scope 2), 800 series (NOS and NOS/VE), 900 series (NOS/VE) and some of the really fast (for their time) specialized parallel processor systems CDC made (AFP, CyberPlus, and micro AFP). Never got to work on the ETA (liquid nitrogen or air cooled), but I saw one once. My languages were Compass (CP and PP), MICA, Fortran (Run and FTN), COBOL, and C. I also knew ALGOL and IBM assembly language from college. No Pascal...