Delete comment from: Ken Shirriff's blog
The planning guides for the machines gave power consumption figures - so many KVA for box 1234 and feature abcd. They also listed heat output which allowed the installtion to figure out the power requirements for both powering the machine and cooling it.
Given those levels. the customer could get pricing on so many tons of cooling and so many A of 3 phase power, for the ACs and the electrical conditioning, switching and wiring costs.
A customer knew quite accurately what it would cost to build up the data center and then to operate the machine,
The final elements were the labor costs of operators and systems programmers, plus the maintenance monthly charges to IBM.
Apr 10, 2019, 9:55:29 PM
Posted to Iconic consoles of the IBM System/360 mainframes, 55 years old