RetroBayArea recalls IBM San Jose campus

RetroBayArea’s September 8 post points to a stretch of south San Jose now occupied by retail buildings, including a Lowe’s, and identifies it as part of IBM’s former Cottle Road campus. The post revived a local-history claim that the site was tied to the birth of the hard drive. IBM’s own corporate history and San Jose preservation records show the broader story is split across two nearby IBM sites: the first disk drive was developed at IBM’s earlier San Jose laboratory at 99 Notre Dame Avenue, while the larger Cottle Road campus became the company’s major south San Jose research and manufacturing complex afterward. ### Was the first hard drive actually invented at the Lowe’s site? IBM says the first random-access disk drive was created by engineers working at its San Jose lab that opened in 1952 “overlooking a plum orchard” in what later became Silicon Valley. That machine, the IBM 305 RAMAC, was introduced after four years of development and became the first computer to use a random-access disk drive, according to IBM. (x.com) The Computer History Museum says Reynold Johnson assembled the team in 1954 at IBM’s research and development laboratory at 99 Notre Dame Ave. in San Jose. The museum says IBM shipped the first commercial hard disk drive, the Model 350 disk storage unit, in June 1956 as part of the 305 RAMAC system. ### So what was the Cottle Road campus? (ibm.com) The IBM Building 025 marker in south San Jose says the success of the original laboratory led to expansion plans for a much larger facility: the Cottle Road campus. The marker describes the site as a pioneering research and manufacturing campus and says Building 025 stood there as an important laboratory in the 1950s and 1960s. The same marker says the 210-acre Cottle Road campus helped pioneer the idea of a landscaped industrial campus, with low-rise buildings spread out by function across open grounds. (computerhistory.org) Preservation Action Council of San Jose says the campus was highlighted in a 1958 IBM booklet photographed by Ansel Adams and appears in 1963 campus photographs that survive in local records. ### Why do people connect this campus to the hard drive anyway? (hmdb.org) San Jose preservation records tie the two IBM sites together as part of one local technology story. The Building 025 marker says IBM established its first West Coast laboratory in San Jose in 1952, where researchers developed the first magnetic disk storage device, and adds that the laboratory’s success led to the Cottle Road expansion. (hmdb.org) PAC*SJ says IBM’s San Jose innovations had a profound effect on the city and on the wider technology industry, and notes that 99 Notre Dame is the landmark building where IBM developed RAMAC, “the world’s first disk drive.” That makes the Cottle Road campus historically connected to the invention, even if the original breakthrough came at the earlier downtown lab. ### What happened to Building 025 and the old campus? (hmdb.org) The historical marker says today’s retail complex incorporates a reconstruction of part of the original IBM Building 025 and was designed to echo the architecture of the former laboratory. The marker stands on part of the old Cottle Road campus in what is now a commercial area. Local and historical accounts identify Lowe’s as one of the later occupants of the redeveloped property. (preservation.org) The surviving marker and pavilion are among the few visible reminders of the IBM complex that once occupied the site. ### What can a visitor still see there now? The south San Jose site still includes the IBM Building 025 historical marker and a reconstructed pavilion next to the retail development, according to the marker text. (hmdb.org) PAC*SJ says Building 11 at 5677 Lexington Avenue is the last remaining structure from the broader Cottle Road campus, while 99 Notre Dame Avenue remains the separate landmark tied directly to RAMAC’s development. (community.cadence.com) San Jose’s IBM history is therefore still visible in two places: the former downtown laboratory where RAMAC was developed, and the former Cottle Road campus memorialized beside today’s Lowe’s-centered shopping area. (computerhistory.org) (hmdb.org)