What is the difference?
In: Technology
Size (specs) and money.
For ex., a 10 year old Dell PC with a Quad core Athelon 64 loaded with linux will live its days as a server collecting dust under a desk or in some closet. A webserver, mailserver, firewall, proxy server.., it doesn’t matter. But it will always be a personal computer.
A mainframe is big, beautifully ugly and lives in a cabinet large enough to sleep in. You would have spent so much for it that you’d pay someone to come in once a weak to dust everything.
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