Memory Register for Black Box Storage Power Loss Recovery
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Solution Overview
Problem
Memory systems operating in a black box configuration without a file system face challenges in quickly identifying the last successfully written address after a power loss event, leading to increased latency and decreased performance.
Innovation Solution
Incorporating a register to store the last successfully written address before entering a low power mode, allowing the system to resume writing from the correct location upon power restoration, even without a file system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a memory system operates in black box configuration without a file system, then power consumption is reduced and device complexity is lowered, but the system cannot quickly identify the last successfully written address after power loss, increasing latency and decreasing performance
Solution Approach 1:
The register is pre-configured to automatically capture and store the last successfully written address when power is lost, before the system enters low power mode. This preliminary action ensures that when power is restored, the system immediately knows where to resume writing without needing to scan through the entire memory space, thus eliminating the latency penalty while maintaining the low power consumption benefits of black box configuration
2Device complexity
If a memory system operates in black box configuration without a file system, then device complexity is reduced, but the system cannot quickly identify the last successfully written address after power loss, decreasing performance
Solution Approach 1:
The register automatically captures and stores the last successfully written address when power is lost, before the system enters low power mode. This preliminary action ensures that when power is restored, the system immediately knows where to resume writing without needing to scan through the entire memory space, thus eliminating the latency penalty while maintaining the low power consumption benefits of black box configuration
Solution Approach 2:
The register acts as an intermediary component between the memory system and the power management mechanism. It mediates the information flow by storing the critical address information during power loss events, enabling the system to quickly resume operations without requiring complex file system structures or extensive scanning mechanisms
Data Source
AI summary
Methods, systems, and devices for memory systems for secure sequential storage devices are described. The system may identify a request for a first portion of a memory system to operate in a first configuration and a second portion of the memory system to operate in a second configuration. The system may enter, a first power mode having a lower power consumption than a second power mode based on receiving the request and store a first address associated with a last information to be stored in the first portion of the memory system before the first portion entered the first power mode. In some cases, the memory system may enter the second power mode based on storing the first address, read the first address, and store data in a second address consecutively indexed after the first address based on reading the first address.