
4 Introduction to the New Mainframe: Large-Scale Commercial Computing
More and faster processors
More physical memory and greater virtual memory addressing capability
Dynamic capabilities for upgrading both hardware and software
More sophisticated automated hardware error-checking and recovery
Enhanced devices for input/output (I/O) and more and faster paths (channels)
between I/O devices and processors
Sophisticated I/O attachments, such as LAN adapters with extensive inboard
processing
Increased ability to divide the resources of one machine into multiple, logically
independent and isolated systems, each running its own operating system ...