Horizontally Rotating Server Bay Access Mechanism

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Solution Overview

Problem

In data center environments, accessing and replacing internal components of rack-mounted Information Handling Systems (IHS) is challenging due to the need for significant physical effort and safety concerns, especially when servers are densely packed and installed at varying heights, requiring cumbersome methods that involve partial server removal or use of sturdier, more expensive hardware to manage the weight and force of extended drive bays.

Innovation Solution

The design incorporates a chassis with a front row of bays that rotates horizontally to open, providing access to an inner row of bays while remaining partially within the rack slot, reducing the need for extensive bay extension and minimizing the moment of downward force on hardware, thus allowing safer and easier servicing without fully removing the server.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If drive bays are extended outward to provide access to internal components, then accessibility is improved, but the moment of downward force on hardware increases requiring sturdier and more expensive rails

Engineering Contradiction:
Improveaccessibility to internal componentsVSAvoidmoment of downward force on hardware
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The patent changes the opening direction from horizontal (outward extension) to vertical (downward rotation). The front row of drive bays rotates downward about a horizontal hinge axis, moving components in the vertical dimension rather than extending horizontally. This dimensional change provides access to internal components while keeping the moment arm short, thereby reducing the moment of downward force on hardware.

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

2Quantity of substance

If servers are densely packed in racks at varying heights, then space utilization is improved, but safety concerns increase due to difficult access to internal components

Engineering Contradiction:
Improvedensity of server packingVSAvoidsafety risks during component replacement
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent divides the drive bay assembly into two independent rows: a front row that rotates downward and an inner row that remains stationary or moves minimally. This segmentation allows the front row to be opened for access while the server remains in its densely packed rack position, eliminating the need for administrators to reach into tight spaces or manipulate heavy extended structures, thereby reducing safety risks.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the front row of bays is opened horizontally outward, then access to inner row bays is improved, but physical effort and hardware stress increase

Engineering Contradiction:
Improveaccess to inner row of baysVSAvoidphysical effort required to open bays
Core Design Contradiction:
Ease of operationVSWeight of moving object

Solution Approach 1:

The opening motion transitions from horizontal outward movement to vertical downward rotation. This dimensional change allows gravity to assist the opening motion rather than resist it, reducing the physical effort required. The front row of drive bays rotates downward about a hinge, utilizing the natural downward force of gravity to reduce the weight of moving object and associated physical effort.

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

4Ease of operation

If extensive bay extension is used to access internal components, then accessibility is improved, but the need for expensive rail and cable solutions increases

Engineering Contradiction:
Improveaccessibility to internal componentsVSAvoidhardware infrastructure requirements
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts only the necessary portion of the drive bay structure (the front row) and makes it independently rotatable. This allows access to internal components through a localized, minimal movement of the front row rather than requiring extensive extension of the entire bay structure. The inner row of bays remains stationary or moves minimally, eliminating the need for complex extended rail and cable infrastructure.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS11337331B2Horizontally opening front bays
Publication Date: 2022.05.17 DELL PROD LP
  • US11337331B2 patent drawing
  • US11337331B2 patent drawing
  • US11337331B2 patent drawing

AI summary

Information Handling Systems (IHSs), such as rack-mounted servers, may support various types of replaceable components that are installed in bays, such as storage drives and computing nodes. Some servers are constructed using a chassis that includes a front row of bays and an inner row of bays. In embodiments, in a closed position, the front row of bays conceals the inner row of bays until the front row of bays is rotated horizontally to an open position that provides access to the inner row of bays. The front row of bays may be divided into two banks of drive bays. The left and right banks of bays may be opened separately by rotating them horizontally about hinges connecting each bank to the chassis. By opening in this manner, the inner bays can be administered safely and limiting the forces placed on the chassis and the rack.