The RAMAC Disk Drive was invented and developed at 99 Notre Dame Avenue in San Jose California, starting in 1952 and announced in 1956.

sjmdhc.org

99 Notre Dame Ave, San Jose, circa 2004

(the same building housing the IBM laboratory established there in 1953)

ASME International Landmark, 1984

IEEE Milestone, 1955

Rey Johnson receiving the Medal of Technology from President Reagan for contributions to data storage (1986)