1U Flash Memory Storage Unit Thermal Exhaust Channels
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Solution Overview
Problem
Conventional server storage units face challenges in achieving high-density storage capacity due to the physical size and capacity limitations of hard-drive based systems within a standard 1U chassis, which restricts the number of memory modules that can be packed effectively.
Innovation Solution
A 1U rack-mountable storage unit is designed to accommodate up to 42 memory modules with dedicated exhaust channels for memory and control circuitry, utilizing flash memory devices and innovative thermal management and mounting techniques to maximize space utilization and storage capacity, while ensuring effective heat dissipation without exposing sensitive components to excessive heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If hard-drive based storage is used in a standard 1U chassis, then storage capacity is limited by the physical size of hard drives, but achieving high-density storage capacity becomes difficult
Solution Approach 1:
The patent transitions from hard-drive based storage to flash memory based storage, changing the fundamental storage medium parameter. Flash memory modules provide higher storage capacity per unit volume compared to traditional hard drives, enabling up to 42 memory modules to be packed into a 1U chassis to achieve 4-10 Terabytes of storage capacity.
Solution Approach 2:
The patent employs vertical stacking of memory modules in multiple sections (first section with first plurality of memory modules, second section with second plurality of memory modules) to maximize space utilization. This three-dimensional arrangement allows significantly higher density packing of storage components within the constrained 1U volume.
2Quantity of substance
If multiple memory modules are packed into a 1U unit to increase storage capacity, then storage density improves, but thermal management becomes challenging due to heat generation from memory modules
Solution Approach 1:
The patent divides the storage unit into distinct thermal zones: a first section containing memory modules, a second section with additional memory modules, and a third section with control circuitry. Each section has dedicated exhaust channels (first exhaust channel for first section, second exhaust channel for second section) that are thermally isolated from one another and from the control circuitry, preventing heat accumulation and protecting sensitive components.
Solution Approach 2:
The patent extracts heat from memory modules through dedicated exhaust channels that remove hot air directly from each section. The first exhaust channel is thermally coupled to the first plurality of memory modules and directs hot air away from the control circuitry, while the second exhaust channel similarly manages thermal extraction from the second section, effectively isolating thermal management from the control circuitry.
3Quantity of substance
If memory modules are placed close to control circuitry to maximize space utilization, then storage density increases, but control circuitry is exposed to excessive heat from memory modules
Solution Approach 1:
The patent spatially segments the 1U chassis into distinct sections: memory modules in first and second sections, and control circuitry in a separate third section. This physical separation allows maximum packing of memory modules while maintaining thermal isolation from the control circuitry through dedicated exhaust channels and thermal barriers.
Solution Approach 2:
The patent extracts hot air from memory module sections through dedicated exhaust channels before it can reach the control circuitry. The first exhaust channel is specifically configured to direct hot air from memory modules away from the control circuitry, effectively removing the thermal hazard from the control environment.
4Quantity of substance
If traditional hard-drive based systems are used, then storage capacity is limited, but transitioning to flash memory requires innovative mounting techniques to maximize space utilization
Solution Approach 1:
The patent utilizes vertical stacking and multi-level positioning of memory modules in first and second sections, arranging 42 memory modules in a three-dimensional configuration within the 1U chassis. This spatial arrangement maximizes volume utilization and requires sophisticated mounting techniques to accommodate the high density of modules while maintaining accessibility and thermal management.
Solution Approach 2:
The patent employs stiffener members that serve multiple functions: providing structural support for memory modules, facilitating thermal conduction away from modules, and enabling mechanical mounting within the chassis. This multi-functional design simplifies the overall mounting system while achieving high density.
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
This configuration significantly increases memory density, allowing for up to 4-10 Terabytes of storage in a single 1U unit, surpassing conventional limits by utilizing flash memory and advanced thermal management to direct heat away from control circuitry, thus enhancing storage capacity and efficiency.
Implementation Method 1
a plurality of fans attached to the back face and operable to direct airflow towards the front face
Implementation Method 2
The first exhaust channel is thermally coupled to the first and the second plurality of memory modules and extends towards the front face over the panel and ends at the first plurality of openings. The first exhaust channel is configured to direct flow of hot air from the first plurality of memory modules to the front face without allowing the hot air to come in contact with the control circuitry.
Implementation Method 3
The first exhaust channel extends towards the front face over the panel
Data Source
AI summary
A rack mountable 1U storage unit includes a plurality of memory modules arranged in two groups. The storage unit also has control circuitry. The memory modules have a dedicated exhaust channel to draw heat away from the memory modules. The exhaust channel for the memory modules is disposed over and is physically separated from the exhaust channel for the control circuitry. The storage unit can accommodate up to 42 memory modules due to a unique method of placing the individual memory modules.