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H. Lehmann, Wilhelm G. Spruth

Characteristics of a Modern In/Out Architecture

The performance characteristics of modern high end commercial systems are to a significant extent determined by their In/Out (I/O) architecture. Here zSeries and S/390 computers feature a large number of leading edge characteristics not (yet) available on other systems.
Among these are the Channel Subsystem, which executes I/O related code concurrently with the CPU, the capability to access a disk alternatively over several parallel paths, or priority controls which permit a work load manager to reassign I/O resources dynamically in response to changing work load situations
The following paper provides an overview of modern I/O characteristics which are implemented on S/390 and zSeries systems and their relationship to the forthcoming InfiniBand standard.

it – Information Technology (vormals it+ti), Oldenbourg Wissenschaftsverlag

Print ISSN: 1611-2776
Volume: 45, 01/2003
Pages: 020

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