Data Storage Power Reduction Through Access-Based Data Placement
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Solution Overview
Problem
Battery-operated devices with data storage, such as SSDs, face challenges in prolonging battery life due to high power consumption, particularly when accessing frequently used data.
Innovation Solution
Classify data into power-sensitive and non-power-sensitive categories, and optimize storage and retrieval operations based on these classifications, including data rearrangement during charging cycles to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is stored and accessed frequently in battery-operated devices, then data accessibility is improved, but power consumption increases
Solution Approach 1:
The patent segments data into frequently accessed and infrequently accessed portions, applying different storage strategies to each segment. Frequently accessed data is kept in higher-power consumption storage for quick access, while infrequently accessed data is moved to lower-power consumption storage, resolving the contradiction between data accessibility and power consumption.
Solution Approach 2:
The patent implements dynamic data movement between different storage media based on access patterns. The system continuously monitors data access frequency and dynamically relocates data between high-speed and low-power storage, adapting the storage configuration to current usage needs and thereby resolving the static contradiction between speed and power consumption.
2Duration of action of moving object
If battery capacity is increased to extend operating time, then battery life is improved, but device size and weight increase
Solution Approach 1:
The patent changes the power consumption parameter of data storage operations by implementing selective data movement between active and standby storage states. By transitioning infrequently accessed data to a lower-power state while maintaining quick access capabilities for frequently used data, the system extends effective battery life without requiring increased battery capacity or weight.
3Speed
If more storage space is allocated for frequently accessed data, then data accessibility is improved, but power consumption increases
Solution Approach 1:
The patent segments the storage system into multiple tiers with different power characteristics. Frequently accessed data is allocated to high-speed storage tiers, while less critical data is placed in lower-power tiers. This segmentation allows the system to optimize for both retrieval speed and power consumption by matching data placement to access patterns.
Solution Approach 2:
The patent extracts frequently accessed data from the main storage pool and places it in a dedicated high-speed cache or buffer region. This extraction allows the majority of storage to remain in a lower-power state while maintaining fast access to critical data, thereby improving retrieval speed without proportionally increasing overall storage power consumption.
Data Source
AI summary
Techniques are provided for optimizing the power consumption of a data storage device included in a battery-operated device. The battery-operated device (e.g., portable devices like wearable devices, smartwatches, and mobile phones) can access certain data stored on the data storage device more frequently when the device operates on battery power as compared to when the device does not operate on battery power. Techniques are provided for identifying and classifying data into different classifications, for example, power sensitive data and non-power sensitive data. Then the device can optimize the battery power consumption of the data storage device by storing or relocating data stored at the data storage device based on the classification of the data.