SSD Context Storage via Host Buffer for Power Management
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Solution Overview
Problem
Information handling systems face challenges in efficiently managing power conservation by transitioning non-volatile storage devices to a powered-down state without impacting system performance, as existing methods require significant time and latency to store and retrieve operating context information.
Innovation Solution
The system provides a notification to non-volatile storage devices of an impending power-down, allowing them to store operating context information in a host memory buffer, reducing transition time and latency by utilizing the information handling system as quick storage and retrieval medium, specifically using a flash translation layer table for solid-state drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If non-volatile storage device is powered down to conserve power, then power consumption is reduced, but system performance deteriorates due to time and latency required to store and retrieve operating context information
Solution Approach 1:
The system performs preliminary actions by storing operating context information in host memory buffer before the non-volatile storage device is powered down. When the device needs to resume operation, the pre-stored context information is already available in the host memory buffer, eliminating the need to retrieve it from the powered-down device and thus reducing transition time.
2Reliability
If operating context information is stored in non-volatile storage device, then data persistence is maintained, but transition latency increases when powering down and up
Solution Approach 1:
The host memory buffer serves as an intermediary between the non-volatile storage device and the system. Operating context information is transferred to this intermediary storage before the device powers down, allowing the device to maintain data persistence in its non-volatile memory while enabling fast retrieval from the intermediary buffer during resume operations, thus reducing transition latency.
3Loss of energy
If non-volatile storage device transitions to powered-down state, then power savings are achieved, but system performance is impacted due to retrieval time of operating context information
Solution Approach 1:
The system performs preliminary actions by pre-storing operating context information in the host memory buffer before the non-volatile storage device transitions to the powered-down state. This ensures that when the device needs to resume, the context information is already prepared and accessible, minimizing the impact on system performance while maintaining power savings during the powered-down period.
Data Source
AI summary
In one or more embodiments, one or more systems, methods, and/or processes may provide information to a non-volatile storage device that indicates a pending power down of the non-volatile storage device without a power down of an information handling system; receive operating context information from the non-volatile storage device; and store the operating context information via a second memory medium. In one or more embodiments, the non-volatile storage device may be or include a solid state drive (SSD), and the operating context information may be or include a flash translation layer table of the SSD. In one or more embodiments, the non-volatile storage device may be powered down, and the one or more systems, methods, and/or processes may provide the operating context information to the non-volatile storage device after the non-volatile storage device is powered up.