Front Rear Loading Control Circuit Server Power Shelf
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Solution Overview
Problem
The limited space in power shelf systems for data centers makes it difficult to implement a front-accessible control circuit like the shelf management controller (SMC) without occupying a PSU slot, and previous designs did not allow for hot pluggability of front-loading SMCs.
Innovation Solution
A circuit with connectors and wiring/traces that connects the power management controller to the backplane, allowing for rear-accessible and front-accessible configurations without occupying a PSU slot, enabling hot pluggability and minimal reconfiguration between rear and front-accessible control circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a front-accessible control circuit is implemented in the power shelf, then the control circuit is accessible from the front for easier operation and maintenance, but a PSU slot must be occupied to accommodate the control circuit, reducing the number of power supplies
Solution Approach 1:
The control circuit is made accessible from the front by providing connectors at both the front and rear of the power shelf. The circuit board can be accessed from either dimension (front or rear), allowing front accessibility without occupying a PSU slot. This dimensional approach resolves the contradiction by providing access from the desired direction while maintaining full PSU capacity.
2Ease of operation
If a front-loading control circuit is implemented, then the control circuit can be accessed from the front, but the control circuit cannot be hot pluggable due to space constraints and design limitations
Solution Approach 1:
The system is designed to be dynamic and adaptable by providing both front and rear connectors. This allows the control circuit to be hot pluggable from either the front or rear, providing operational flexibility. The dynamic design resolves the contradiction by enabling both front accessibility and hot pluggability through multiple access points.
Solution Approach 2:
The control circuit design provides universal accessibility by implementing connectors at both front and rear positions. This multi-functional approach allows the same control circuit to be accessed and hot plugged from either direction, resolving the contradiction between front accessibility and hot pluggability by making the system adaptable to different operational requirements.
3Quantity of substance
If the power shelf uses a rear-accessible control circuit, then all PSU slots remain available, but the control circuit is less accessible for operation and maintenance
Solution Approach 1:
By providing connectors at both front and rear positions, the system offers accessibility from multiple dimensions. While rear access maintains full PSU availability, front access provides improved ease of operation. This dimensional approach resolves the contradiction by allowing users to choose the most convenient access direction for their specific needs.
Data Source
AI summary
Electrical interconnect systems for a server power shelf are disclosed. An electrical interconnect system, which can include multiple connectors and a printed circuit board or other wiring, can allow a control circuit, such as a shelf management controller (SMC), to be accessible via a front or rear of a server power shelf. The control circuit can be communicatively coupled to the backplane of the server power shelf through the electrical interconnect system in either the front or rear position without having to reconfigure or redesign a server power shelf configuration. Further, the control circuit can be hot swappable from both the front-loading position and the rear loading position. Even further, when utilized in the front-loading position, neither the electrical interconnect system nor the control circuit occupy a slot of the server power shelf intended for a power supply or reduce a number of power supplies the shelf can include.