Redundant Power Extender for 4+4 Datacenter Redundancy
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Solution Overview
Problem
Data processing equipment in datacenters faces challenges in providing sufficient and redundant power to server blades due to increased power consumption, especially when the total enclosure power consumption exceeds half the maximum capacity, making it difficult to maintain operation without 'brownout' during power feed failures.
Innovation Solution
The implementation of a redundant power extender system that adds two power cables and an automatic transfer switch to a 3+3 redundancy system, enabling a 4+4 power feed redundancy by switching power between two power distribution units, ensuring continuous operation even when one power feed fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the total enclosure power consumption exceeds half the maximum capacity of all power feeds, then server blade performance and power consumption increase, but redundant power capacity decreases making it difficult to provide enough power when one power feed fails
Solution Approach 1:
The patent introduces a power extender as an intermediary device between the power distribution unit and the server blade. This extender includes additional power in-ports and out-ports that expand the available power connections. When one power feed fails, the extender enables the server blade to utilize power from alternative in-ports that would otherwise remain unused, thereby maintaining redundant power capacity without requiring a complete system redesign.
Solution Approach 2:
The patent segments the power distribution system by inserting a power extender that divides the power connection into multiple stages. The extender separates the primary power distribution unit from the server blade, creating intermediate power in-ports and out-ports. This segmentation allows independent configuration of power feeds and enables flexible redistribution of power capacity when failures occur.
2Reliability
If power feeds are separately coupled to provide redundant power, then reliability improves, but device complexity increases due to multiple power distribution units and cables
Solution Approach 1:
The power extender is designed as a multi-functional device that simultaneously provides multiple functions: it extends power connections, enables redundancy configuration, and facilitates flexible power distribution. The same extender hardware supports both 3+3 and 4+4 redundancy modes, eliminating the need for separate dedicated systems for each redundancy level and reducing overall device complexity.
Solution Approach 2:
The system employs dynamic power feed configuration where the power extender can adaptively switch between different redundancy modes (3+3 or 4+4) based on available power feeds and system requirements. The automatic transfer switch dynamically redistributes power connections, allowing the system to optimize between reliability and complexity depending on operational conditions.
3Device complexity
If a 3+3 redundancy system is used, then power distribution is simplified, but redundant power capacity is insufficient when power consumption increases
Solution Approach 1:
The power extender implements a nested structure where additional power in-ports and out-ports are integrated within the existing 3+3 redundancy framework. The extender nests extra power connection capabilities inside the conventional system, allowing the 4+4 redundancy mode to be achieved by embedding additional functionality within the original architecture rather than requiring a complete redesign.
Data Source
AI summary
In one implementation, a system for a redundant power extender includes a first automatic transfer switch comprising a number of in-ports coupled to a first power distribution unit and a second power distribution unit, wherein the first automatic transfer switch comprises an out-port coupled to a first side of a device and a second automatic transfer switch comprising a number of in-ports coupled to the first distribution unit and the second power distribution unit, wherein the second automatic transfer switch comprises an out-port coupled to a second side of the device with intelligence to allow 4+4 power redundancy from a system otherwise limited to 3+3 power redundancy.