Storage Management Reclaiming Space via Data Migration
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Solution Overview
Problem
Conventional data backup systems face inefficiencies due to wasted storage space as they write new data sequentially, leading to unused storage areas and inefficient space utilization, especially as data scales grow, and existing solutions fail to effectively manage and reclaim storage space.
Innovation Solution
A method and device for storage management that identifies pairs of storage areas with available space, moves data from one area to another, and releases the first area once it becomes empty, optimizing storage space usage by reorganizing and reclaiming unused areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If data is written sequentially to storage areas, then new data can be easily appended, but storage space is wasted and utilization becomes inefficient
Solution Approach 1:
The patent implements dynamic storage management by continuously monitoring storage area usage and automatically performing data migration when thresholds are met. The system dynamically adjusts storage allocation based on real-time conditions, transforming the static sequential writing approach into an adaptive system that optimizes space utilization while maintaining ease of data writing.
Solution Approach 2:
The patent recovers wasted storage space by migrating data from storage areas that have reached their capacity threshold to storage areas with sufficient available space. This process effectively discards the inefficient sequential allocation pattern and recovers unused space for reuse, directly addressing the storage space waste problem.
2Ease of operation
If storage areas are allocated for each file, then file management is simplified, but storage space fragmentation increases
Solution Approach 1:
The patent merges storage management operations by consolidating data from multiple storage areas into fewer storage areas. When a storage area reaches the threshold, its data is migrated to other storage areas, effectively combining their capacity. This reduces fragmentation while maintaining simplified file management through the persistent storage area structure.
3Speed
If storage areas are not released after use, then data access is fast, but storage space cannot be reclaimed
Solution Approach 1:
The patent implements a threshold-based release mechanism that recovers storage space by releasing storage areas when their usage falls below a predetermined threshold. This ensures rapid space reclamation while maintaining fast data access, as the release decision is based on simple threshold comparison rather than complex access patterns.
Solution Approach 2:
The patent uses parameter changes (threshold-based release criteria) to determine when storage areas should be released. By monitoring usage parameters and comparing them against predefined thresholds, the system automatically releases storage areas to be reclaimed, balancing fast access with space recovery without requiring complex management logic.
Data Source
AI summary
Embodiments of the present disclosure a method, device and computer program product for storage management. The method comprises: determining, from a storage system, a plurality of storage areas corresponding to a plurality of files; selecting, from the plurality of storage areas, a pair of first storage area and second storage area, both the first storage area and the second storage area having non-empty available space; moving at least part of data stored in used space of the first storage area to available space of the second storage area; and in response to determining that the used space of the first storage area becomes empty after the moving, releasing the first storage area. In this way, the storage space can be effectively released and the storage efficiency is accordingly improved.