"My co-worker, Tim, explained that our company, a major software vendor, is seeing its mainframe workforce rapidly approaching the age of retirement. Tim said IBM and most other firms whose businesses depend on mainframes are also dealing with this industry-wide problem.
"Since the 1980’s, PC’s and UNIX machines were supposed to have taken over the computing world, relegating mainframes to the scrap heap alongside rotary-dial telephones, suitcase-size boom boxes, and Plymouth Reliants. Indeed, most mainframes from that era have been consigned to the scrap heap – only to be replaced by bigger and faster mainframes.
"Today the number of mainframes is estimated to be 10,000. Since 2000, the processing power of mainframes has quadrupled in terms of MIPS. According to IBM, the top 25 world banks run mainframes, 80% of the world’s corporate data resides or originates on mainframes, and 71% of global Fortune 500 companies are mainframe clients."
