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MainFrame vs Server

By fantle ·
what do I consider when switching fron a main frame to a client server arrangement

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MainFrame vs Server

by lrund In reply to MainFrame vs Server

The PC or intel based servers have really increased the CPU capabilities to the point where the CPU speeds are equivalent. So from the standpoint of an application that is very CPU dependent with little I/O processing; the PC/Intel servers are an easy swap with the mainframe. All you would have to do is rewrite the application for the PC/Intel server and port the date over.
Now for high I/O applications, the only thing that has saved mainframes is the high I/O processing capabilites. There are no servers out there that can touch a mainframe on I/O capabilities. The servers are limited to one I/O at a time while the mainframe can perform upto 257 simultanious I/Os.
So in a nutshell, if you have an application that is CPU concentric, the switch is a no brainer. Go for it. But for high I/O applications, leave the data on the mainframe and put all of your efforts into developing PC client interfaces to access the data on the mainframe.

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MainFrame vs Server

by lrund In reply to MainFrame vs Server

For an indepth study of the costs of mainframes verses Unix and PC Services, read the Dinosaur Myth article at Mainframe Week http://www.mainframeweek.com/extra/dinosaur.html

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