Server Storage Drive Cooling via Mid-Plate Air Channels

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Solution Overview

Problem

Densely packed disk drives in servers create cooling issues due to limited space for air movement, restricting effective airflow and heat dissipation in densely packed 1 U servers.

Innovation Solution

The server chassis design incorporates a mid-plate bracket assembly with embossed features forming air channels and louvers to optimize airflow around each disk drive, allowing for efficient air flow management and heat removal, which can be applied to other electronic devices as well.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If disk drives are tightly packed side by side to maximize storage capacity, then storage density is improved, but cooling efficiency deteriorates due to limited space for air movement

Engineering Contradiction:
Improvestorage densityVSAvoidcooling efficiency
Core Design Contradiction:
Quantity of substanceVSTemperature

Solution Approach 1:

The server enclosure is segmented into multiple levels using mid-plate bracket assemblies that create separate air flow channels. Each disk drive has dedicated air flow paths formed between the mid-plate brackets and the enclosure walls, allowing independent cooling zones even in densely packed configurations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces vertical air flow channels by positioning mid-plate bracket assemblies at different heights within the enclosure. This creates three-dimensional air flow paths that utilize the vertical dimension, allowing air to move through and around disk drives in multiple directions rather than only horizontally.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Quantity of substance

If disk drives are tightly packed to maximize storage capacity, then storage density is improved, but airflow impedance increases due to restricted air movement space

Engineering Contradiction:
Improvestorage densityVSAvoidairflow impedance
Core Design Contradiction:
Quantity of substanceVSDevice complexity

Solution Approach 1:

The mid-plate bracket assemblies serve as intermediary structures that mediate between the densely packed disk drives and the cooling air flow. These brackets create dedicated air channels and routing paths that guide air around the drives, reducing direct impedance while maintaining compact spacing.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies different structural features to different locations within the enclosure. Mid-plate bracket assemblies are positioned at specific locations to create localized air channels around individual disk drives, providing optimized air flow paths tailored to each drive's position rather than uniform spacing throughout.

Inventive Principle:
Principle #3Local quality

3Temperature

If open spaces are provided between disk drives to improve cooling efficiency, then cooling efficiency is improved, but storage density deteriorates due to reduced space utilization

Engineering Contradiction:
Improvecooling efficiencyVSAvoidstorage density
Core Design Contradiction:
TemperatureVSQuantity of substance

Solution Approach 1:

The air flow system is designed to be dynamic rather than static. The mid-plate bracket assemblies create channels that allow air flow to adapt to the three-dimensional arrangement of disk drives, enabling efficient heat removal without requiring uniform increase in spacing between drives.

Inventive Principle:
Principle #15Dynamics

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 design enhances cooling efficiency by creating sufficient air spaces and directing airflow effectively, addressing the impedance issues in densely packed servers and improving storage density within a given volumetric space.

Implementation Method 1

Such cooling systems are designed to move a large volume of air across or throughout the server in order to remove the heat energy created by the operation of the server

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 2

The server chassis can include a mid-plate bracket assembly having embossed features below each drive forming air spaces below each drive for cooling

Methodology Applied
Scientific EffectForced Convection: Forced Convection

Data Source

PatentUS9443560B2Server with storage drive cooling system
Publication Date: 2016.09.13 WESTERN DIGITAL TECHNOLOGIES INC
  • US9443560B2 patent drawing
  • US9443560B2 patent drawing
  • US9443560B2 patent drawing

AI summary

A server chassis can provide air flow to the top and bottom of multiple storage drives. The server chassis can include an enclosure having a top wall and a bottom wall, and a base plate positioned between the top and bottom walls of the enclosure. The base plate can include a plurality of storage drive receiving areas, a plurality of recesses, and a plurality of openings. Each recess can be positioned at a corresponding one of the storage drive receiving areas and be configured to be under a storage drive received at the storage drive receiving area. Each opening can be used to direct air flow from below the base plate into the recesses and thereby onto a bottom of the storage drives.