Double-Density Blade Server Vertical PCA Stacking
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Solution Overview
Problem
Current blade servers are limited by structural restrictions, unable to provide the necessary processing capacity due to constraints on memory capacity, cooling, power, and cabling, which results in reduced CPU density and increased costs, failing to meet the demands of new computer processing systems.
Innovation Solution
A double-density blade server design featuring two half-height printed circuit assemblies with vertical memory components and a pass-through connector to increase processing capacity, allowing for up to 256 CPUs per rack with improved cooling and power management, while maintaining compatibility with existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current blade server structural restrictions are maintained, then existing compatibility is preserved, but processing capacity and CPU density are limited
Solution Approach 1:
The blade server is divided into two separate half-height printed circuit assemblies (PCAs) stacked vertically within a single bay. Each PCA contains its own CPUs, memory, and other components, allowing the system to double the number of CPUs per bay from 4 to 8, thereby increasing processing capacity while maintaining compatibility with existing rack structures.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking two half-height PCAs one above the other within the same bay footprint. This vertical stacking approach doubles the processing capacity without increasing the horizontal space occupied, effectively increasing CPU density by 100% within the same rack unit.
2Quantity of substance
If full height memory in vertical orientation is implemented, then memory capacity increases, but structural constraints are violated
Solution Approach 1:
The memory system is segmented across two separate half-height PCAs, each capable of holding vertical memory modules. This segmentation allows full-height vertical memory orientation on each PCA while maintaining compliance with overall structural constraints through the distributed architecture.
3Productivity
If power supplies, fans, and cabling are arranged in traditional configurations, then serviceability is maintained, but cooling and power capacity are limited
Solution Approach 1:
The patent merges the power supply and cooling resources of two traditional 1U servers into a single shared infrastructure. The power supplies and fans are consolidated at the enclosure level, providing sufficient power and cooling capacity for the doubled CPU density while reducing redundancy and improving space utilization.
4Productivity
If single system board configuration is used, then cost is reduced, but processing capacity per bay is limited
Solution Approach 1:
The system is segmented into two independent half-height PCAs, each functioning as a complete processing platform with its own CPUs, memory, and I/O capabilities. This segmentation enables double the CPU sockets per bay while maintaining independent serviceability and management of each PCA.
Data Source
AI summary
A blade server for increasing the amount of processing capacity per rack bay is disclosed. The blade server includes a housing having a top portion and a bottom portion, a first printed circuit assembly adjacent to the top portion of the housing, a second printed circuit assembly positioned in the bottom portion of the housing opposite the first printed circuit assembly, and a connector attaching the first and second printed circuit assembly to one another.