Master-Slave Storage Power Management via Capacity Margin
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Solution Overview
Problem
As data processing demands increase, especially in AI and big data industries, traditional data storage devices face challenges in scaling capacity without proportionally increasing power consumption, particularly in mobile devices with limited battery capacity.
Innovation Solution
Implementing a system with a master storage device and one or more slave storage devices, where the master device manages power modes of slave devices based on capacity margin and received device information, allowing for dynamic power management to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple data storage devices are installed to increase storage capacity, then storage capacity is improved, but electric power consumption increases proportionally
Solution Approach 1:
The patent implements dynamic power management where the master storage device controller adjusts the power modes of slave storage devices based on real-time capacity margin and device information. This allows the system to adaptively activate or deactivate storage devices according to actual storage needs, rather than maintaining all devices in a constant high-power state, thereby resolving the contradiction between maintaining storage capacity and reducing power consumption.
Solution Approach 2:
The system changes the operational parameters of slave storage devices by switching between different power modes (active, idle, sleep, shutdown) based on capacity margin thresholds. This parameter change approach allows the storage devices to provide necessary storage capacity when needed while consuming minimal power during low-utilization periods, effectively addressing the power-capacity tradeoff.
2Quantity of substance
If multiple data storage devices are installed to increase storage capacity, then storage capacity is improved, but device complexity increases
Solution Approach 1:
The patent segments the storage system into a hierarchical master-slave architecture where one device acts as master and others as slaves. This segmentation simplifies management by centralizing control functions in the master device while allowing slave devices to operate in simpler, more standardized modes, thereby reducing overall system complexity despite having multiple storage devices.
Solution Approach 2:
The master storage device controller performs multiple functions: it manages data I/O operations, controls power modes of slave devices, and makes activation decisions based on capacity margin. This multi-functionality consolidates control logic into a single device, reducing the need for complex distributed control mechanisms across multiple devices.
Data Source
AI summary
An electronic device may include a plurality of data storage devices including a master storage device and one or more slave storage devices. Each of the data storage devices comprises a storage configured to store data and a controller configured to control data input/output operations with respect to the corresponding storage. The controller of the master storage device receives device information including identification information, capacity information and physical configuration information from each of the slave storage devices, and the controller of the master storage device changes an electric power mode of at least one of the slave storage devices selected based on capacity margin of the master storage device and the device information.