Storage Device Power-State Sequencing for Background Operations
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Storage devices face inefficiencies and malfunctions when transitioning to low power states due to limited executable operations and sudden power off or clock down, which can disrupt background operations.
Innovation Solution
The storage device enters a series of intermediate power states sequentially, checks background flag information at each state to identify executable operations, and executes these operations before transitioning to a lower power state, thereby preventing malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the storage device enters a low power state directly from a normal state, then power consumption is reduced, but background operations cannot be executed and malfunctions may occur
Solution Approach 1:
The transition to low power state is segmented into multiple intermediate power states (first intermediate power state, second intermediate power state, etc.) rather than a direct transition. This segmentation allows the system to progressively reduce power consumption while executing background operations at each stage, ensuring reliability is maintained throughout the transition process.
Solution Approach 2:
Background operations are executed in advance during the intermediate power states before the final low power state is reached. The controller checks background flag information and executes target background operations during the first intermediate power state, ensuring that necessary operations are completed before power consumption is minimized.
2Reliability
If the storage device executes background operations in intermediate power states, then operation reliability is improved, but power consumption is higher compared to direct low power state entry
Solution Approach 1:
The system dynamically adjusts the power state based on the execution status of background operations. The controller determines whether to enter the next intermediate power state or execute background operations based on real-time conditions, creating a dynamic balance between power consumption and operation reliability.
Solution Approach 2:
The system changes power state parameters progressively through multiple intermediate states rather than making a single abrupt change. Each intermediate power state represents a different parameter configuration, allowing the system to optimize the balance between power consumption and operational capability at each stage.
3Use of energy by stationary object
If the storage device suddenly powers off or clocks down, then power consumption is reduced, but malfunctions occur due to interrupted background operations
Solution Approach 1:
The system provides a cushioning transition period through intermediate power states that prevents sudden power off or clock down. This gradual transition cushions the system against abrupt changes, allowing background operations to complete properly and preventing malfunctions that would occur with sudden power state changes.
Solution Approach 2:
The controller continuously checks background flag information to determine whether background operations are executable at each intermediate power state. This feedback mechanism ensures that the system responds to the actual operational status and adjusts the power state transition accordingly, preventing malfunctions caused by interrupted operations.
Data Source
AI summary
A storage device may enter a plurality of intermediate power states sequentially while entering from a first power state to a second power state. The storage device may check background flag information while entering each of the plurality of intermediate power states, and execute a target background operation, executable in a first intermediate power state, based on the background flag information.