Managing sets of input/output communications subadapters of an input/output subsystem

Managing sets of input/output communications subadapters of an input/output subsystem

Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connec...

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Hauptverfasser: Brice, Jr, Frank W, Easton, Janet R, Gainey, Jr, Charles W, Kubala, Jeffrey P, Lehmann, Hans-Helge, Lu, Tan, Njoku-Charles, Ugochukwu, Oakes, Kenneth J, Riedy, Jr, Dale F, Shapley, Charles E, Sittmann, Gustav E, Wyman, Leslie W, Yudenfriend, Harry M
Format: Patent
Sprache:eng
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Zusammenfassung:Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connectivity, a plurality of sets of I/O subadapters is provided to an operating system image. This allows programs of the operating system image to access a same component via different sets of I/O communications subadapters. Further, it enables an operating system image to use more than 64 k subchannels.