Removable Expansion Card Carriers for Dense Server Serviceability
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Solution Overview
Problem
As computing systems evolve with increased memory capacity and performance, servicing and replacing removable modules such as DIMMs becomes increasingly difficult due to higher density and varying form factors, making it challenging to handle and install these components safely and efficiently.
Innovation Solution
A computing system design featuring a chassis with a hinged cover, expansion slots, component guides, and carriers that facilitate easy insertion and extraction of expansion cards, along with enhanced retention and labeling to ensure safe handling and identification of components, including the use of carriers that accommodate different form factors and provide improved visibility of status indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the density of removable modules is increased to improve memory capacity, then memory capacity is improved, but serviceability and ease of replacement deteriorate
Solution Approach 1:
A carrier component is introduced as an intermediary between the expansion card and the expansion slot. The carrier includes a grip structure that extends beyond the expansion card edges, providing a convenient handle for service personnel to grasp, insert, and remove the expansion card without directly touching the card itself. This mediator structure resolves the contradiction by enabling easy handling even in high-density configurations where cards are closely spaced.
2Quantity of substance
If the density of removable modules is increased, then memory capacity is improved, but difficulty of servicing increases
Solution Approach 1:
The carrier acts as a mediator that simplifies servicing operations. The grip structure on the carrier provides a clear target for fingers, making it easy to locate and grasp the correct component even when modules are densely packed. This intermediary structure eliminates the need to precisely locate and grasp the small expansion card edges, significantly reducing servicing difficulty in high-density configurations.
Solution Approach 2:
The grip structure on the carrier is designed to be self-evident and self-serviceable. The protruding grip naturally indicates where to grasp, requiring no additional tools, markings, or complex procedures. Service personnel can intuitively understand how to handle the component, making the servicing process straightforward even for those unfamiliar with the specific system configuration.
3Volume of moving object
If components are made smaller to fit more in the chassis, then density is improved, but handling safety deteriorates
Solution Approach 1:
The solution extends the handling interface from the two-dimensional surface of the expansion card to the third dimension by adding a grip structure that protrudes vertically from the card edges. This dimensional extension provides a larger graspable surface area without increasing the footprint of the expansion card itself, maintaining high density while improving handling safety.
Solution Approach 2:
The grip structure serves as an intermediary between the service personnel's fingers and the small expansion card. Instead of directly grasping the small, potentially difficult-to-locate card edges, personnel grasp the larger grip structure that extends beyond the card boundaries. This mediator protects the small components from direct handling stress while providing secure grip points.
Data Source
AI summary
Providing optimized housing and serviceability of removable computer system components. In an embodiment a computing system includes a chassis, the chassis including a bay having a hinged cover; a primary circuit board secured to the chassis, the primary circuit board including a plurality of expansion slots accessible through the bay of the chassis; a plurality of expansion components removably coupled to the primary circuit board via the plurality of expansion slots, wherein each expansion component includes: an expansion card configured for mating with one of the expansion slots; and a carrier removably attached to the expansion card such the carrier provides a grip for inserting and extracting the expansion card; and a plurality of component guides within the bay, wherein each component guide is configured to guide mating of each expansion card with a corresponding expansion slot.