FlashCopy Backup Target Volume Allocation
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Solution Overview
Problem
Current systems face challenges in efficiently managing FlashCopy backup target volume allocation from a shared resource pool, particularly in avoiding collisions during ingestion into a repository, which can lead to resource conflicts and inefficiencies in data storage and retrieval.
Innovation Solution
The solution involves maintaining a global pool of FlashCopy backup target volumes and consistency groups to dynamically allocate target volumes for new backups, reusing existing resources when possible, and allocating new volumes as needed to prevent collisions and optimize resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing FlashCopy target volumes are reused for new backups, then storage resource utilization is improved, but resource collisions may occur during ingestion into the repository
Solution Approach 1:
The system dynamically determines whether to reuse existing target volumes or allocate new ones based on real-time ingestion status. The volume allocation is not static but adapts to the current state of the repository, allowing the system to optimize resource utilization while avoiding collisions by switching strategies based on conditions.
Solution Approach 2:
The system checks the ingestion status of existing target volumes before reusing them. This feedback mechanism ensures that volumes currently being ingested are not reused, preventing resource collisions. The system uses this information to make informed decisions about volume allocation and reuse.
2Reliability
If new target volumes are allocated for every FlashCopy backup, then resource collision is avoided, but storage efficiency and resource utilization deteriorate
Solution Approach 1:
The system recovers and reuses target volumes after they have been successfully ingested into the repository. Instead of permanently allocating new volumes for each backup, the system recovers ingested volumes and makes them available for reuse, thereby improving storage efficiency while maintaining collision avoidance.
Solution Approach 2:
Target volumes serve multiple functions: they are used for FlashCopy backups, then ingested into the repository, and subsequently reused for future backups. This multi-functionality allows the same volumes to be reused across different backup operations, improving storage efficiency without causing resource collisions.
3Adaptability or versatility
If a global pool of target volumes is maintained for dynamic allocation, then flexibility and adaptability are improved, but system complexity increases
Solution Approach 1:
The system automatically manages the global pool of target volumes through self-service mechanisms. The volume allocation and reuse decisions are made autonomously based on ingestion status, eliminating the need for manual intervention and reducing the operational complexity of managing the global pool.
Solution Approach 2:
The global pool of target volumes acts as an intermediary between backup operations and the repository. It manages the allocation and reuse of volumes, absorbing the complexity of coordination and allowing backup operations to proceed without directly managing the complexity of volume lifecycle management.
Data Source
AI summary
For efficient FlashCopy backup target volume allocation from a shared resource pool while ingesting a FlashCopy backup in a repository, for dynamically allocating a target volume for the new FlashCopy backup, a global pool of FlashCopy backup target volumes and a consistency group in the global pool of FlashCopy backup target volumes is maintained for use by a new FlashCopy backup upon encountering a collision while an existing FlashCopy target volume containing older FlashCopy backups are being ingested into the repository for dynamically allocating a target volume for the new FlashCopy backup.