Video Storage Routing by TBW Ratings for Surveillance Endurance
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Solution Overview
Problem
Video surveillance systems face rapid wear-out of storage devices due to frequent data recycling and varying TBW capabilities of different flash memory types, leading to limited device lifespan and storage capacity.
Innovation Solution
A system and method that utilizes data routing controllers to manage video storage by selecting storage devices based on TBW ratings, moving data between devices with different endurance ratings, and invalidating data based on event detection and retention policies to optimize device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If storage devices with higher capacity are used to extend recording time, then the storage capacity increases, but the device wears out faster due to frequent data recycling
Solution Approach 1:
The patent divides the storage system into multiple devices with different TBW ratings, assigning specific roles to each device. High-TBW devices handle frequent write operations while low-TBW devices store archived data, segmenting the workload to prevent any single device from suffering excessive wear.
Solution Approach 2:
The system dynamically monitors and changes the operational parameters of storage devices by switching between devices with different TBW characteristics based on real-time wear status and data retention requirements, optimizing the balance between recording duration and device reliability.
2Productivity
If data is continuously recycled to make room for new video data, then the storage capacity is maintained, but the storage device wears out rapidly
Solution Approach 1:
The patent introduces an intermediary data management layer that coordinates between multiple storage devices. This intermediary system directs data recycling operations to appropriate devices based on their TBW status, preventing direct write operations from depleting the endurance of any single device.
Solution Approach 2:
The system selectively discards old video data from high-TBW devices after transferring it to low-TBW archival devices, thereby recovering storage space in the high-TBW devices for continuous recording while preserving their endurance through reduced write operations.
3Reliability
If different flash memory types with varying TBW capabilities are used, then the storage capacity and endurance requirements are met, but the system complexity increases
Solution Approach 1:
The patent implements a self-service management mechanism where the system automatically monitors TBW consumption and switches between storage devices based on predefined policies, eliminating the need for manual intervention and reducing operational complexity despite using multiple memory types.
Solution Approach 2:
The storage system is designed to universally handle different flash memory types (SLC, MLC, TLC, QLC) through a unified management architecture that abstracts their differences, allowing the system to leverage the strengths of each memory type without increasing user-facing complexity.
Data Source
AI summary
Systems, methods, and data storage devices for video data management based on data storage device lifetime endurances, such as terabytes written (TBW) ratings, are described. A data routing controller is integrated with a video camera that supports at least two non-volatile memory devices having different lifetime endurance ratings, such as SLC and QLC flash devices. The data routing controller determines lifetime endurance values for the different non-volatile memory devices and selects the device with the higher lifetime endurance value to act as an intermediate device to store real-time video data units, then subsequently evaluates the stored video data units prior to invalidation to selectively transfer to other non-volatile memory devices with lower lifetime endurance values (but higher capacity) based on detected video events.