Integrated Server Sled Storage Density and Reliability
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Solution Overview
Problem
Existing server designs with centralized controllers lead to inefficiencies in space utilization and reliability, as they often leave unused space in server chassis, and a single component failure can render all hard disk drives inaccessible, reducing system reliability and storage capacity.
Innovation Solution
Integrating a server device within the same chassis as mass storage devices, allowing it to occupy equivalent volume space, thereby eliminating wasted space and creating independent logical nodes that can continue operations even if one component fails, enhancing storage density and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If standard off-the-shelf hard disk drives are used in server designs, then cost effectiveness is improved, but space utilization deteriorates due to substantial wasted space in server chassis
Solution Approach 1:
The patent merges the controller and hard disk drives into a single integrated unit that fits within the server chassis. This integration eliminates the wasted space that occurs when separate controllers and drives are used, while still allowing the use of standard off-the-shelf hard disk drives. The integrated unit combines multiple components into one compact assembly that maximizes space utilization in the server.
2Device complexity
If a centralized controller is used to control accesses to hard disk drives, then device complexity is reduced, but reliability deteriorates because a controller failure causes all hard disk drives to be unreachable
Solution Approach 1:
The patent segments the storage system into multiple independent units, each with its own controller and hard disk drives. This segmentation means that if one controller fails, only the hard disk drives in that specific unit are affected, while other units continue to operate normally. This eliminates the single point of failure problem associated with centralized controllers, thereby improving reliability without significantly increasing overall system complexity.
3Productivity
If rack systems include multiple rack-mounted components to increase computing capacity, then productivity is improved, but heat generation increases reaching up to 10 kilowatts
Solution Approach 1:
The patent merges multiple components (controller and hard disk drives) into integrated units that are more space-efficient and potentially more thermally efficient. By consolidating components into compact integrated units rather than having them as separate rack-mounted components, the system can achieve similar computing capacity with reduced heat generation per unit of capacity.
Data Source
AI summary
A system includes a rack and one or more server systems mounted in the rack. A server system includes a chassis with one or more arrays of devices in the chassis. Each array includes mass storage devices and a server device mounted in the array within the chassis of the server system. The server device occupies no more than an equivalent volume of space in the chassis as one of the mass storage devices. A set of mass storage devices of an array and the server device of the array form a logical node, and a server system may include multiple logical nodes in the same chassis. Each array of devices may be located in a sled that can move into and out of the chassis of the server system.