Chassis Management Controller Wake Signal Routing
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Solution Overview
Problem
Existing server architectures face challenges in efficiently managing wake-on-local-area-network operations in modular chassis with shared input/output infrastructure, where wake signals for information handling systems are not directly routable due to the virtualization of resources across multiple systems.
Innovation Solution
A system and method that includes a chassis with modular information handling systems, switches, power management event lines, and chassis management controllers to route wake messages and forward wake signals to the appropriate information handling systems, enabling them to power on upon receiving a wake message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If modular information handling systems share common I/O resources in a chassis, then resource utilization and system density are improved, but wake signal routing becomes complex and unreliable
Solution Approach 1:
The chassis management controller serves as an intermediary between the shared I/O resources and the modular information handling systems. It receives wake messages from shared resources, determines which system should wake based on resource association, and forwards the wake signal to the appropriate system. This mediator resolves the routing complexity by centralizing the decision-making logic.
2Adaptability or versatility
If wake signals are routed through virtualized shared infrastructure, then system flexibility is improved, but signal routing complexity increases
Solution Approach 1:
The chassis management controller performs preliminary determination of system association before forwarding wake signals. It pre-establishes the mapping between shared I/O resources and modular systems, allowing wake signals to be routed correctly without complex real-time routing decisions. This preliminary action simplifies the routing process.
3Productivity
If information handling resources are removed from shared infrastructure, then system performance is improved, but resource utilization efficiency decreases
Solution Approach 1:
The chassis management controller autonomously manages wake signal routing without requiring manual intervention or complex external control. It automatically determines which system should wake based on the received wake message and forwards signals accordingly, enabling efficient resource sharing while maintaining system performance.
Data Source
AI summary
A method for waking an information handling system includes receiving in a chassis a plurality of modular information handling systems and a plurality of modular information handling resources, routing access of one of the modular information handling resources to one or more of the plurality of modular information handling systems, monitoring a plurality of power management event lines, determining a wake message received at one of the modular information handling resources, determining which of the plurality of modular information handling systems is associated with the received wake message, forwarding a wake signal to the determined modular information handling system, and powering on the determined information handling system. The modular information handling resource is configured to receive a wake message. Each line is coupled one of the modular information handling resources.