Data Copy Management for Sequential Read Speed

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Solution Overview

Problem

The speed of data transfer from hard disk drives to RAM is hindered by bottlenecks, particularly due to non-sequential reading, which is slow and disperses data across storage devices, making it difficult to group data for different scenarios effectively.

Innovation Solution

Implementing a data copy management system that maintains multiple copy sets of data on a storage device, each with data units grouped for specific scenarios, allowing for faster access and sequential reading by positioning data in close proximity, reducing seek time and enabling better caching and throughput.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If data is stored in a single set on a storage device, then the storage structure is simple, but the read speed is slow due to non-sequential access patterns

Engineering Contradiction:

Improveread speedVSAvoidstorage structure complexity

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

The patent divides the data storage into multiple copy sets (first copy set, second copy set, etc.), each containing copies of data units. This segmentation allows the system to select specific copy sets based on access patterns, enabling faster sequential reads by choosing the appropriate copy set while maintaining a manageable storage structure through organized data unit grouping.

Inventive Principle:

Principle #1Segmentation

2Productivity

If data units are dispersed across the storage device, then the storage capacity is efficiently utilized, but the seek time increases making data retrieval slower

Engineering Contradiction:

Improvedata retrieval efficiencyVSAvoidseek time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent performs preliminary organization of data units into multiple copy sets with specific data units grouped together in each copy set. This preliminary action ensures that when data needs to be retrieved, the appropriate copy set with pre-grouped data units can be selected, reducing seek time and improving retrieval efficiency without wasting storage capacity.

Inventive Principle:

Principle #10Preliminary action

3Speed

If multiple copy sets of data are maintained on a storage device, then the read speed is improved through sequential access, but the storage space consumption increases

Engineering Contradiction:

Improvedata transfer rateVSAvoidstorage space

Core Design Contradiction:

SpeedVSQuantity of substance

Solution Approach 1:

The patent applies local quality by organizing data units with identical or similar access patterns into specific copy sets. Each copy set is optimized for particular data access scenarios, allowing the system to maintain multiple copy sets only where needed for specific data units while leaving other storage space available, thus balancing read speed improvement with storage space efficiency.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS8850148B2Data copy management for faster reads

Publication Date: 2014.09.30 MICROSOFT TECHNOLOGY LICENSING LLC

AI summary

Multiple copy sets of data are maintained on one or more storage devices. Each copy set includes at least some of the same data units as other sets. Different sets optionally have data units stored in different orders on the storage device(s). A particular one of the sets of data is selected as the set to be accessed in response to detecting a particular scenario.