Acoustic Damping Shelf for Backplane Hard Drives
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Solution Overview
Problem
Information handling systems face a tradeoff between thermal and acoustic requirements, where increased cooling necessitates more powerful air movers, leading to degraded I/O throughput due to acoustic and vibrational disturbances, and existing damping solutions are not effectively targeted to where they are needed.
Innovation Solution
Incorporating an acoustically absorbent material on a shelf positioned between the backplane and air movers in information handling systems, specifically for hard drives, to absorb acoustic vibrations and reduce airflow impedance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If more powerful air movers are used to increase cooling capacity, then thermal requirements are improved, but acoustic and vibrational disturbances increase causing degraded I/O throughput
Solution Approach 1:
The patent applies acoustic damping material specifically at locations where hard drives are mounted on the backplane, rather than uniformly throughout the system. This localized approach provides acoustic protection only where needed (at hard drive positions) while minimizing interference with overall airflow and cooling efficiency
Solution Approach 2:
The acoustic damping material acts as an intermediary element between the air mover and the hard drives. It absorbs acoustic energy and reduces vibrational disturbances transmitted to the hard drives, thereby protecting I/O performance while allowing the air mover to operate at high speeds for effective cooling
2Object-affected harmful factors
If acoustic damping solutions are included in all drive bays, then dynamics damping is provided, but air flow impedance increases without providing benefit to solid state drives or empty bays
Solution Approach 1:
The system provides acoustic damping only at specific locations where hard drives are detected on the backplane. Acoustic damping material is omitted from drive bays containing solid state drives or empty bays, thereby eliminating unnecessary air flow impedance while maintaining protection where it is actually needed
Solution Approach 2:
The configuration of acoustic damping material is dynamically adapted based on the detected drive types in each bay. The system can be configured to provide damping only where hard drives are present, making the acoustic protection adaptive to the actual system composition rather than being static and uniform
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 solution allows for increased air mover speed without degrading I/O performance, maintaining lower system temperatures by providing targeted acoustic damping only where needed, thus optimizing both thermal and acoustic conditions.
Implementation Method 1
the shelf may include an acoustically absorbent material
Data Source
AI summary
An information handling system may include a backplane configured to couple at a first side thereof to a plurality of physical storage resources, an air mover configured to provide cooling to the information handling system, and a shelf coupled to the backplane at a second, opposite side thereof, wherein the shelf is disposed between the first side of the backplane and the air mover. The shelf may include an acoustically absorbent material.