1U Chassis Hot-Swap Power and Compute Partitioning
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Solution Overview
Problem
Conventional data storage systems face inefficiencies in space utilization and lack robust field replaceability, with 4U enclosures consuming excessive space and 1U enclosures limiting throughput and fault tolerance due to rigid blade configurations and limited replaceability.
Innovation Solution
A 1U chassis with a specific configuration of components allows for hot-swappable power supply/blower assemblies and computing devices, using high-power Intel Architecture circuits with robust thermal cooling and interleaved power partitioning for enhanced fault tolerance and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a 4U enclosure is used, then space consumption is large, but component replaceability and system efficiency are improved
Solution Approach 1:
The system divides the enclosure into modular 1U units that can be independently replaced. Each 1U enclosure contains a single blade server with dedicated power supply and cooling, allowing individual module replacement without affecting other units. This segmentation enables the system to maintain reliability through replaceability while minimizing overall space consumption by using compact 1U form factor.
2Area of stationary object
If a 1U enclosure with rigid blade configuration is used, then space efficiency is improved, but fault tolerance and throughput are limited
Solution Approach 1:
The system transitions from rigid fixed configurations to dynamic hot-swappable components. Blades, power supplies, and cooling assemblies can be independently inserted and removed during operation through hot-swap mechanisms. This dynamic replaceability maintains compact 1U space efficiency while significantly improving fault tolerance through individual component replacement without system shutdown.
3Adaptability or versatility
If dual-port power supplies are used in 4U enclosure, then power distribution flexibility is improved, but device complexity and cost increase
Solution Approach 1:
The power distribution system is segmented into dedicated single-port power supplies for each 1U blade unit, eliminating the need for complex dual-port power supplies. Each blade receives power from its own dedicated power supply unit, simplifying the power supply design while maintaining flexible power distribution through modular architecture. This segmentation reduces device complexity and cost while preserving power distribution adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables efficient use of space, robust field replaceability, and improved fault tolerance, allowing for high-power, high-speed data processing without the need for complex dual-port power supplies, maintaining operation even with single component failures.
Implementation Method 1
a first port of each dual-port power supply outputs power supply signals to one blade and a second port of each dual-port power supply outputs power supply signals to the other blade
Implementation Method 2
The three pairs of fans pass air over the blades in a shared configuration to thermally maintain the blades within a controlled temperature range
Implementation Method 3
The power for both the fans and the blades is diode-OR'd or shared to support backup of each other in the event of one DC power supply failing
Data Source
AI summary
An improved redundant computing apparatus includes a chassis assembly configured to (i) mount to a standard electronic equipment rack and (ii) consume substantially 1U of space in a particular direction (e.g., vertical height) within the standard electronic equipment rack. The chassis assembly includes a housing and a midplane disposed within the housing. The apparatus further includes a set of power supply/blower assemblies configured to connect to the midplane of the chassis assembly through a front of the housing in a field replaceable manner, and a set of computing devices configured to connect to the midplane of the chassis assembly through a back of the housing in a field replaceable manner. By way of example, the set of computing devices is adapted to move data into and out of a set of disk drives on behalf of a set of external host computers.