Method and apparatus for enforcing of power control in a blade center chassis
US7307837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2005 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Sep 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/20836
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mechanism for changing ownership over the physical power to a blade server in a blade center chassis that prevents a malfunctioning blade from jeopardizing other components in the chassis. When the management module is not present, control over power to the blade is switched to a service processor on the blade. This arbitration of control over power to a blade is accomplished by implementing a watchdog timer mechanism. The management module is responsible for tickling the watchdog timer when the present in the chassis and operating normally. This mechanism provides the management module with control over power. If the management module malfunctions or is removed, control over power is switched to the local service processor on the blade server as soon as the watchdog timer is not tickled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.