NAS Object Migration Path Information Storage
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Solution Overview
Problem
When migrating a file from a first NAS storage apparatus to a second NAS storage apparatus, and subsequently to a third NAS storage apparatus as an archive, failures in the second NAS storage apparatus require restarting the migration process, leading to lengthy restore times.
Innovation Solution
The second NAS storage apparatus includes a processor that stores object path information from the first NAS storage apparatus before migrating the file to the third NAS storage apparatus, and updates the management information in the third NAS storage apparatus, allowing for quick restore processing even if the second NAS storage apparatus fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the migration process is restarted after a failure in the second NAS storage apparatus, then the file can be migrated to the third NAS storage apparatus, but the restore processing time becomes excessively long
Solution Approach 1:
The patent stores the path information of the original file (from the first NAS storage apparatus) in the second NAS storage apparatus before migration occurs. This preliminary storage of path information enables rapid restore processing by allowing the system to directly access and copy files from the original location without needing to restart the entire migration process, thus resolving the contradiction between migration reliability and restore time
Solution Approach 2:
The patent creates a copy of the path information in the second NAS storage apparatus that points to the original file location. This copy serves as a restoration mechanism that can be quickly activated after failure, allowing the system to retrieve files from the first NAS storage apparatus through the stored path information rather than re-executing the migration, thereby reducing restore processing time while maintaining migration reliability
2Adaptability or versatility
If the file is migrated through both the second and third NAS storage apparatus, then archiving functionality is achieved, but the complexity of the migration process increases
Solution Approach 1:
The second NAS storage apparatus serves as an intermediary that stores path information to the original file location. This intermediary role simplifies the overall migration architecture by allowing the third NAS storage apparatus (archive destination) to directly access files from the first NAS storage apparatus through the path information stored in the second NAS, rather than requiring complex multi-step migration protocols between all three systems
Solution Approach 2:
The patent divides the migration functionality into separate roles: the second NAS storage apparatus handles path information storage and management, while the third NAS storage apparatus handles archive storage. This segmentation of functions reduces the complexity of each individual component and simplifies the overall migration process while maintaining comprehensive archiving functionality
Data Source
AI summary
A storage system comprises a second NAS storage apparatus comprising a processor and a storage medium and a third NAS storage apparatus for migrating an object managed by a first NAS storage apparatus. The processor stores path information of an object for which migration has started after including the path information in object management information, in the storage medium prior to migrating the object entity to the third NAS storage apparatus. The processor, after receiving the object entity from the first NAS storage apparatus and migrating the object entity to the third NAS storage apparatus, stores the third NAS storage apparatus path information to the object entity in the object management information, and reflects the management information in the third NAS storage apparatus.