I don’t know the exact number but when I started, my employer had 2 mainframes. One box was a NAS9000, for production, and the other was a smaller NAS (7750 comes to mind) for development. Just about every employer had a mainframe. Back then, there were more mainframes than PC’s. Green screen terminals were the only connection.
Sent from Yahoo Mail for iPhone On Monday, June 17, 2019, 11:07 PM, Charles Mills <[email protected]> wrote: Were there once 4 million mainframes? Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Bill Johnson Sent: Monday, June 17, 2019 2:08 PM To: [email protected] Subject: Re: mainframe hacking "success stories"? IBM z was more secure even when there were 1000 times more of them and a million times less MSFT platforms. Target was down again over the weekend. How many fools will blame the mainframe again? When it was their point of sale system again. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
