Rack Frame Arms for Out-of-Band FRU Management
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Solution Overview
Problem
Rack-based computing systems lack the enhanced availability and serviceability provided by blade or chassis-based systems, as they are typically limited to proprietary designs that only accommodate specific types of field replaceable units (FRUs), restricting the seamless management of disparate FRUs with different form factors and functionalities.
Innovation Solution
A system comprising frame arms and a frame center with a fixed interconnect topology that allows for the management of various types of FRUs, enabling out-of-band management through a unified management system, where the frame manager communicates with OOB service processors to determine and manage the physical locations of FRUs, facilitating hot-swapping and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a proprietary blade enclosure design is used, then availability and serviceability are enhanced, but adaptability to different FRU types is reduced
Solution Approach 1:
The frame arms are designed with universal receiving structures that can accommodate multiple types of FRUs (blade servers, storage devices, networking equipment) through standardized interfaces. The frame arms include connector assemblies with multiple contact points that work across different FRU form factors, enabling a single rack system to manage diverse hardware components with unified out-of-band management capabilities.
2Adaptability or versatility
If a standardized rack structure is used, then adaptability to different FRU types is improved, but availability and serviceability are reduced
Solution Approach 1:
The rack system is segmented into modular frame arms that can be independently configured and positioned. Each frame arm contains specialized receiving structures and connector assemblies designed for specific FRU types, while the overall rack structure remains standardized. This segmentation allows the system to maintain adaptability through modular configuration while achieving blade-like availability through dedicated management paths for each segment.
Solution Approach 2:
Frame arms serve as intermediary components between the standardized rack structure and the diverse FRUs. They provide the specialized interfaces and management pathways needed for high availability while accommodating the standardized rack format. The frame arms act as translators that bridge the gap between generic rack mounting and blade-system-level management capabilities.
3Device complexity
If FRUs are managed individually without unified management, then device complexity is reduced, but productivity and serviceability are worsened
Solution Approach 1:
Multiple individual FRU management functions are merged into a unified out-of-band management system through the frame arms. The connector assemblies integrate power delivery, communication pathways, and management interfaces into single integrated components that can be controlled collectively. This merging enables centralized management of diverse FRUs while reducing overall system complexity through standardized management protocols.
Data Source
AI summary
A system for the management of rack-mounted field replaceable units (FRUs) that affords the enhanced availability and serviceability of FRUs provided by blade-based systems but in a manner that accommodates different types of FRUs (e.g., in relation to form factors, functionality, and the like) installed within a rack or cabinet.