Disk Drive Grouping in Multi-Cell Test Systems
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Solution Overview
Problem
Conventional multi-cell disk drive test systems are inefficient due to the need to test disk drives with different characteristics simultaneously, limiting throughput to the slowest drive, resulting in increased costs and reduced efficiency.
Innovation Solution
A system and method for disk drive grouping in a multi-cell test system, where an automated loader/unloader identifies and groups disk drives with similar characteristics, allowing them to be tested simultaneously in cells optimized for specific environmental and communication requirements, using a test computer to determine grouping criteria and coordinate the loading and testing of disk drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple disk drives with different characteristics are tested simultaneously in the same cell, then cell utilization is maximized, but the throughput is limited to the slowest drive
Solution Approach 1:
The patent segments disk drives into different groups based on their characteristics (spindle speed, buffer size, interface type). By dividing the testing process into separate groups, drives with similar performance characteristics are tested together, allowing each group to proceed at its own optimal speed without being held back by slower drives in mixed groups.
Solution Approach 2:
The patent implements dynamic grouping where disk drives are continuously sorted and reassigned to different cells based on their detected characteristics. The system dynamically adjusts which drives are grouped together, enabling flexible optimization of testing throughput as drives are loaded and tested in sequence rather than using static grouping.
2Productivity
If disk drives are grouped by characteristics and tested in separate cells, then testing efficiency is improved, but cell utilization decreases
Solution Approach 1:
The patent performs preliminary detection of disk drive characteristics (spindle speed, buffer size, interface type) before grouping and testing. By identifying and categorizing drives in advance, the system can efficiently assign them to appropriate cells without complex real-time decision-making during the testing process itself.
Solution Approach 2:
The patent introduces an automated loader/unloader as an intermediary component that handles the complex task of detecting drive characteristics, determining appropriate grouping criteria, and physically loading drives into the correct cells. This intermediary absorbs the system complexity, leaving the core testing process simpler and more efficient.
3Device complexity
If all disk drives are tested in a single cell, then system complexity is minimized, but the testing throughput is reduced
Solution Approach 1:
The patent designs multiple test cells that are universally capable of testing different types of disk drives. Each cell is equipped with the necessary infrastructure to handle various drive characteristics, allowing the system to process multiple drive types in parallel without requiring specialized equipment for each drive category.
Data Source
AI summary
Disclosed is a system and method for disk drive grouping in a multi-cell disk drive test system. A test platform includes a plurality of cells. Each cell is configured to receive and to provide communication with a disk drive. An automated loader/unloader is coupled to a test computer and is responsive to the test computer. The automated loader/unloader is configured to identify disk drives and to selectively load and unload disk drives into and out of the plurality of cells. Particularly, once the automated loader/unloader has identified a first disk drive, the test computer is configured to: determine a grouping criteria based upon the first disk drive; detect a subsequent disk drive having the same grouping criteria as the first disk drive; and cause the automated loader/unloader to load the subsequent disk drive into one of the plurality of cells.