State Bit Data Integrity Analysis After Power Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Data integrity analysis after power fluctuations in non-tape media storage systems is time-consuming due to the need to compare primary and redundant data, especially when power is interrupted during data storage.
Innovation Solution
Implementing a state bit system in non-volatile memory that changes state from 'in-progress' to 'complete' upon successful storage of data segments, allowing for quick determination of storage completion status upon power cycling, thereby isolating and assessing compromised data segments efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is stored on non-tape media (disc drives) to enable random access and faster data transfer, then productivity and flexibility are improved, but data integrity becomes more vulnerable to power fluctuations causing incomplete or corrupted storage
Solution Approach 1:
The patent applies preliminary action by setting the state bit to indicate 'in-progress' status before data storage begins. This allows the system to proactively mark data segments as vulnerable to power fluctuations before the actual storage occurs, enabling quick identification of potentially compromised data without needing to perform time-consuming comparisons after power restoration.
2Reliability
If power cycled during data storage, then data may be incomplete or corrupted requiring comparison of primary and redundant data, but this comparison process is time-consuming
Solution Approach 1:
The patent extracts the essential status information (data completion state) into a separate, easily accessible state bit stored in non-volatile memory. This extraction allows the system to quickly determine data integrity status without performing time-consuming bit-by-bit comparisons between primary and redundant data, significantly reducing verification time while maintaining reliability.
Solution Approach 2:
The state bit serves as an intermediary between the data storage process and the verification process. Instead of directly comparing large amounts of data to verify integrity, the system uses this small intermediary indicator to quickly identify which data segments may be compromised, reducing the verification time from potentially hours to seconds.
3Loss of time
If state bit is stored in non-volatile memory, then storage completion status can be quickly determined after power cycling, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the data storage system into distinct data segments, each with its own associated state bit. This segmentation allows the system to track the completion status of individual data segments independently, enabling quick identification of affected segments after power fluctuations without needing to manage the entire dataset as a single unit, thus limiting the increase in complexity to manageable portions.
Data Source
AI summary
Disclosed is a method and apparatus relating generally to analysis techniques for data integrity following an un-safe power down occurrence of non-tape media components comprising a storage system. The data storage system comprises at least one random access memory storage device adapted to be power cycled in at least an on and off condition. The random access memory storage device comprises at least one storage medium comprising a first stored data segment. The storage device is adapted to receive data for storage on the medium in at least a second data segment. At least one state bit has a first state associated with the second data segment during the storage of the second data segment and a second state associated with the second data segment after completion of the storage of the second data segment wherein the state bit is stored in non volatile memory associated with the storage device. The state bit is capable of being accessed to determine completion status of the storage of at least the second data segment after the storage device is power cycled in the on condition.