System control structure of the IBM eServer z900

Authors:
F. Baitinger;H. Elfering;G. Kreissig;D. Metz;J. Saalmueller;F. Scholz
Affiliations:
IBM Server Group, Boeblingen, Germany;IBM Server Group, Boeblingen, Germany;IBM Server Group, Austin, Texas;IBM Server Group, Boeblingen, Germany;IBM Server Group, Boeblingen, Germany;IBM Server Group, Boeblingen, Germany
Venue:
IBM Journal of Research and Development
Year:
2002

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Abstract

As computer systems become more complex, the use of embedded controllers for initializing and maintaining system operation is becoming increasingly prevalent. In the IBM eServer z900, a new control approach was introduced. This paper discusses why its introduction was necessary and outlines its associated, key technological and economic innovations. In particular, the following topics are addressed: service subsystem topology, hardware elements for performing system control, hardware abstraction, object-oriented framework for control, and internetworking of system control microprocessors.