Chassis Controller Adaptive Switching for JBOD Power Reduction
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Solution Overview
Problem
Conventional JBOD storage servers in data centers have redundant and costly motherboard configurations due to high availability and redundancy requirements, leading to increased power consumption that does not align with the trend of green energy.
Innovation Solution
A server control method and chassis controller that adaptively switches between JBOD and storage server modes, allowing the chassis controller to function as either a slave or master device based on the presence and operation of a blade server, thereby reducing costs and power consumption while enhancing operational flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual motherboards are configured for HA and redundancy, then system reliability is improved, but device complexity and cost increase
Solution Approach 1:
The chassis controller dynamically switches between master mode (independent control) and slave mode (blade server control) based on the operational status of the blade server. This dynamic adaptation allows the system to maintain reliability through multiple operational modes while avoiding the permanent complexity of dual motherboards, as only one motherboard is physically present but the controller can operate in different control configurations
2Reliability
If dual motherboards are configured for redundancy, then system reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically activates or deactivates the chassis controller based on blade server status. When the blade server is operational, the chassis controller switches to slave mode and can be deactivated or placed in low-power state, eliminating the need for continuous power consumption while maintaining redundancy capabilities through the same controller when needed
3Adaptability or versatility
If JBOD system operates independently, then operational flexibility is maintained, but control efficiency decreases
Solution Approach 1:
The chassis controller dynamically adapts its control mode based on real-time conditions. When a blade server is present and operational, the system transitions to blade server control mode for optimized efficiency. When no blade server is present or it fails, the chassis controller automatically switches to independent master mode, maintaining operational flexibility. This dynamic switching resolves the contradiction by allowing the system to exhibit different behavioral characteristics appropriate to the current operational context
Data Source
AI summary
A server control method and a chassis controller are proposed. The server control method includes: determining whether the chassis controller is connected to a blade server when a power of the chassis controller is on; when the chassis controller is connected to the blade serve, further determining whether the blade server operates normally; when the blade server operates normally, switching the chassis controller to a slave device of the blade server, and controlling a just a bunch of disk (JBOD) system in response to a control command of the blade server.