Host-Aware Data Storage Resource Allocation for Endurance
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Solution Overview
Problem
Data storage devices allocate resources based on a single configuration regardless of the host device's capabilities, leading to excess resource allocation and reduced endurance.
Innovation Solution
A performance determination system in the data storage device determines the host device's capabilities and performance requirements, adjusting resource allocation and programming methods to match the host's needs, enhancing endurance by using methods like CTC programming and lower voltage writing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data storage device uses single configuration with highest performance resources allocated, then device can support highest communication protocol speeds, but resources are wasted when connected to slower host devices
Solution Approach 1:
The patent implements dynamic resource allocation where the data storage device controller adjusts programming parameters, memory die configuration, and resource allocation based on the detected host device capabilities and communication protocol version. This allows the device to adapt its performance characteristics in real-time rather than being locked into a single static configuration.
Solution Approach 2:
The system changes operational parameters such as programming speed, voltage levels, and memory die configuration based on the host device's protocol support. For example, when connected to a USB 3.2 host instead of USB 4, the controller adjusts parameters to match the lower speed requirements, preventing waste of high-performance resources that cannot be utilized.
2Speed
If data storage device allocates resources for highest performance protocol, then USB 4 speeds are supported, but endurance is reduced due to error propagation from mismatched allocation
Solution Approach 1:
The controller detects the host device's protocol capabilities and uses this feedback information to adjust resource allocation and programming methods. This closed-loop approach ensures that programming operations are optimized for the actual communication speed being used, reducing error propagation that occurs when high-speed resources are allocated but not utilized.
Solution Approach 2:
The system modifies programming parameters such as voltage levels and programming speed based on the detected protocol version. When connected to slower protocols like USB 3.2, the controller uses appropriate programming parameters that match the actual data transfer rates, thereby reducing errors and improving endurance compared to using USB 4 optimized parameters.
3Device complexity
If data storage device uses same configuration for all host devices, then device complexity is reduced, but resource utilization efficiency decreases
Solution Approach 1:
The data storage device automatically detects the host device's protocol capabilities and self-configures its resource allocation without requiring manual intervention or complex external configuration management. The controller performs automatic detection and adjustment, maintaining simplicity while achieving optimal resource utilization.
Data Source
AI summary
A data storage device includes a performance determination system. The performance determination system determines the capabilities of a host device to which the data storage device is connected. The performance determination system also determines the performance requirements associated with the capabilities of the host device. When the performance requirements are determined, the performance determination system determines the type and amount of resources that are needed to meet the performance requirements. The performance determination system compares the determined amount and type of resources to the type and amount of available resources provided by the data storage device. The performance determination system then determines at least one of a memory die programming method and a memory die programming parameter that will be used when various operations are performed on the data storage device.