Browse Prior Art Database

Auto Recognition of Operational System and Powering to Its Last State

IP.com Disclosure Number: IPCOM000042304D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Sutton, AJ: AUTHOR

Abstract

In a data processing system which utilizes a Service Processor that has power controls to each of its multiple power partitions, not all of the power partitions have to be powered to form an operational system. The installed partitions are powered. The Service Processor then uses its stored validity table, for each installed configuration, to record the power state for each element powered. At the completion of the power sequence, the elements are checked against the validity table to see if an operational system exists. For example, a dyadic system must have both power frames containing a System Controller and its External Data Controller with at least one storage array to be operational. With multiple power partitions, other elements may be concurrently repaired.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Auto Recognition of Operational System and Powering to Its Last State

In a data processing system which utilizes a Service Processor that has power controls to each of its multiple power partitions, not all of the power partitions have to be powered to form an operational system. The installed partitions are powered. The Service Processor then uses its stored validity table, for each installed configuration, to record the power state for each element powered. At the completion of the power sequence, the elements are checked against the validity table to see if an operational system exists. For example, a dyadic system must have both power frames containing a System Controller and its External Data Controller with at least one storage array to be operational. With multiple power partitions, other elements may be concurrently repaired. Some of the elements may be powered down, while the rest of the system is powered. The Service Processor retains this power state on its permanent file. If system utility power is lost and the system is powered on, the Service Processor will only power those elements that were powered when the system utility power was lost. Those elements not powered must be manually powered or powered through some other procedure.

1