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IBM Mainframe Operating Systems Overview by Vishal Funding is a document available to read on EtoBox.

Large groups of physical servers located in a central location are known as server farms. The most common mainframe workload is batch and online transaction processing. In addition to z/OS and z/VM, operating systems like z/VSE, Linux on z, and z/TPF can run on IBM System z mainframes. FICON channels have higher capacity than older ESCON channels. IFL specialty processors on IBM mainframes are specially tuned to run the SAP application suite. Coupling facilities are required for Parallel Sysplex clustering

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Vishal Funding

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EN