Adaptive Storage System with Dual Disk Drives for Power Optimization
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Solution Overview
Problem
Laptop computers face a significant limitation in battery life due to the high power dissipation of components like hard disk drives, which reduces the time they can operate on batteries before needing recharging.
Innovation Solution
Implementing a dual-mode data storage system with a high power disk drive (HPDD) and a low power disk drive (LPDD), where the LPDD operates in low power mode by using adaptive storage modules to manage data transfer and storage between the two, optimizing power consumption by employing low power nonvolatile memory like flash memory or microdrives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a high power disk drive (HPDD) is used to provide sufficient storage capacity and performance, then data storage capability is improved, but power consumption increases significantly
Solution Approach 1:
The storage system is segmented into two distinct components: a high power disk drive (HPDD) for capacity-intensive operations and a low power disk drive (LPDD) for energy-constrained operations. This segmentation allows the system to provide sufficient storage capacity through the HPDD while enabling low-power mode operation using the LPDD, thereby resolving the contradiction between storage capacity and power consumption.
Solution Approach 2:
The system dynamically switches between high power and low power modes based on operational requirements. An adaptive storage module monitors power availability and data access patterns, dynamically selecting which disk drive to use and when to transfer data between drives. This dynamic adaptation allows the system to optimize the trade-off between storage performance and power consumption in real-time.
2Use of energy by moving object
If a low power disk drive (LPDD) is used to reduce power consumption, then battery life is extended, but data access speed and performance decrease
Solution Approach 1:
The system performs preliminary data transfer operations by proactively copying frequently accessed data from the low power disk drive (LPDD) to the high power disk drive (HPDD) before high-performance access is needed. This preliminary action ensures that when the HPDD is activated, the required data is already in place, maximizing data access speed while minimizing the time the high-power drive needs to operate.
Solution Approach 2:
The adaptive storage module acts as an intermediary that manages data transfer between the LPDD and HPDD. It monitors data access patterns and automatically transfers data between drives based on predicted usage, thereby ensuring that the LPDD maintains adequate data while the HPDD provides high-speed access when activated, resolving the speed-performance contradiction.
3Use of energy by moving object
If data is transferred between HPDD and LPDD to optimize power usage, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The adaptive storage module implements self-service by autonomously monitoring data access patterns, predicting future data needs, and automatically transferring data between the HPDD and LPDD without requiring complex external control systems. This self-managing approach reduces the overall system complexity while still achieving optimal power consumption through intelligent data placement.
4Reliability
If the HPDD is activated frequently to maintain data accessibility, then data access reliability is improved, but battery life decreases
Solution Approach 1:
The system performs preliminary data transfer operations by proactively copying frequently accessed data from the low power disk drive (LPDD) to the high power disk drive (HPDD) before high-performance access is needed. This preliminary action ensures that when the HPDD is activated, the required data is already in place, maximizing data access speed while minimizing the time the high-power drive needs to operate.
Data Source
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Figure 2A
AI summary
A data storage system for a device including low power and high power modes comprises low power (LP) nonvolatile memory that includes a LP hard disk drive (HDD) having a non-volatile semiconductor memory interface, wherein said LP HDD communicates with said device via said non-volatile semiconductor memory interface. High power (HP) nonvolatile memory communicates with said device.