From CNN: While many web sites are hosted on microcomputers, mainframe computers continue to be a popular choice for hosting large sites and Web services.
IBM has continued to sell mainframe computers to clients that use legacy applications written for older computers.
Mainframe computers are also appropriate for running virtual servers. A single mainframe computer can run multiple virtual servers, each of which emulates a smaller computer’s operations. A virtual server can be shut down and restarted quickly, and can be described in an image file that is loaded by the mainframe’s virtualization software. In some cases, companies have found that a mainframe can replace several hardware servers while improving system availability.




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