SSD Backup Storage Control Merging Metadata to Reduce Write Load
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Solution Overview
Problem
The existing backup techniques for SSDs increase load due to the need to manage and update management information during the backup process, leading to potential deterioration of SSD storage elements from frequent writing and erasing.
Innovation Solution
An information processing device that includes an SSD storage controlling unit for storing data and SSD update information, a backup storage controlling unit for storing copy data and update information, and an acquiring unit that decides data to be stored based on SSD update information and copy update information, reducing the need for separate management information and thereby decreasing the load during backup and restoration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If management information is generated and updated during backup process, then backup functionality is achieved, but load on SSD increases and storage element life decreases
Solution Approach 1:
The patent combines management information (version numbers, update counts, physical addresses) with the actual data being backed up into a single unified storage structure. This eliminates the need for separate management information files and reduces the total amount of data that needs to be read, processed, and written during backup operations, thereby reducing SSD load and extending storage element life while maintaining complete backup functionality.
Solution Approach 2:
The unified storage structure serves multiple functions simultaneously: it stores both user data and management information, enables backup operations, supports data retrieval, and provides version control all in one place. This multi-functionality eliminates the need for separate management structures that would otherwise increase the overall data volume and processing requirements during backup operations.
2Ease of operation
If separate management information is maintained for backup, then backup control is achieved, but device complexity increases
Solution Approach 1:
By merging management information with data storage into a unified structure, the patent eliminates the complexity of maintaining separate management files and their associated metadata. The unified structure uses simple, intuitive fields (version numbers, update counts, physical addresses) that are directly embedded with the data they manage, reducing the overall system complexity while maintaining full backup control capabilities.
Data Source
AI summary
An information processing device includes: an SSD storage controlling unit for storing a physical address of a storage region of data stored in an SSD (Solid State Drive) and a number of updates of the storage region, as SSD update information into the SSD; a backup storage controlling unit for storing copy data of the data stored in the SSD, and copy update information obtained by copying the SSD update information, in association with each other into a backup storage part; an acquiring unit for acquiring the copy update information corresponding to data associated with the SSD update information acquired from the SSD, from the backup storage part; and a deciding unit for deciding the data to be stored into the backup storage part based on the acquired SSD update information and the acquired copy update information.