Dynamic Storage Command Processing for NVMe Lifespan
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Solution Overview
Problem
Existing storage systems, including SSDs, lack the ability to dynamically adjust the processing of incoming commands based on internal operation parameters such as power consumption, operating temperature, and erase count, leading to potential overheating and reduced lifespan of storage locations.
Innovation Solution
A method and device for dynamically optimizing command processing in a storage system by monitoring internal operation parameters of nonvolatile memory storage locations, comparing these parameters to predetermined criteria, and controlling command execution to mitigate adverse conditions, such as throttling commands or redirecting them to more optimal storage locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional FTL interfaces are used to shield flash memory operation parameters, then host applications can process commands without internal operation information, but the storage system cannot dynamically adjust command processing based on internal conditions such as temperature and power consumption
Solution Approach 1:
The patent implements dynamic command processing by making the FTL interface adaptable to internal storage conditions. The system monitors parameters like temperature, power consumption, and erase count, and dynamically adjusts command execution based on these conditions. This allows the storage system to respond to internal states in real-time, resolving the contradiction between simple command processing and dynamic adaptability.
Solution Approach 2:
The patent introduces feedback mechanisms where internal operation parameters (temperature, power consumption, erase count) are continuously monitored and fed back to the FTL. This feedback loop enables the system to adjust command processing dynamically based on actual storage conditions, transforming the static FTL interface into a responsive system that adapts to internal states.
2Productivity
If write commands are processed without monitoring internal operation parameters, then command processing is simple and fast, but storage locations operating at dangerous temperatures or with high erase counts may be further taxed, reducing reliability
Solution Approach 1:
The patent applies preliminary action by monitoring internal operation parameters (temperature, power consumption, erase count) before executing write commands. The system checks these parameters in advance and can prevent or adjust commands that would tax already stressed storage locations. This proactive approach protects storage reliability without significantly impacting command processing speed.
Solution Approach 2:
The patent changes the parameter space by introducing monitoring of internal operation parameters (temperature, power consumption, erase count) into the command processing flow. This allows the system to adjust command execution based on real-time storage conditions, balancing productivity with reliability by modifying parameters like command timing or destination selection.
3Adaptability or versatility
If global FTL in host computer manages multiple Open Channel SSDs, then control over flash memory resources is enhanced, but information about flash memory device operation parameters remains shielded from the global FTL
Solution Approach 1:
The patent introduces an intermediary mechanism that bridges the gap between the global FTL and flash memory devices. This intermediary enables the global FTL to access and monitor internal operation parameters (temperature, power consumption, erase count) of flash memory devices while maintaining the abstracted interface. The intermediary translates or forwards this information to the global FTL, resolving the information loss problem.
Solution Approach 2:
The patent implements feedback by enabling the global FTL to receive information about flash memory device operation parameters. This feedback loop allows the global FTL to make informed decisions about resource allocation and command processing across multiple SSDs, enhancing adaptability while maintaining information awareness of the underlying storage hardware state.
Data Source
AI summary
Disclosed herein is a device and method for dynamically processing of a command within a storage system. This includes identifying a plurality of non-volatile memory storage locations of the storage system that have at least one operation parameter associated with the plurality of non-volatile memory storage locations. For each identified plurality of non-volatile memory storage locations, there is a determination whether a value of the at least one operation parameter exceeds a predetermined threshold value. That value is representative of operation effects of the storage system on a corresponding storage location of the identified plurality of non-volatile memory storage locations. During operation of the storage system, there is a throttling of execution of the command to access a storage location of the identified plurality of non-volatile memory storage locations that has the value determined to exceed the predetermined threshold value by a throttle amount determined to mitigate an effect of the value exceeding the predetermined threshold value.