Dynamic Storage Mode Switching for Data Volume Pairs
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Solution Overview
Problem
Current data storage systems face inefficiencies in capacity utilization and performance due to excessive storage capacity consumption and high access frequency leading to performance deterioration, particularly in backup and virtual logical volume scenarios.
Innovation Solution
A storage system that dynamically switches between different data storage modes, such as replication, snapshot, and copy-on-write snapshot, based on factors like data duplication, access frequency, and storage capacity usage, to optimize storage capacity and performance by reallocating and releasing storage areas as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is replicated in a secondary logical volume with excess storage capacity to prevent data loss, then reliability is improved, but storage capacity utilization deteriorates
Solution Approach 1:
The patent implements dynamic switching between two storage modes: replication storage mode and virtual storage mode. The system automatically transitions between these modes based on operational conditions, making the storage configuration flexible rather than static. This resolves the contradiction by allowing the system to use replication for safety when needed, while using virtual storage for capacity efficiency when appropriate.
Solution Approach 2:
The patent changes the storage mode parameter between replication and virtual storage based on access frequency and operational phase. By modifying this key parameter dynamically, the system adapts its behavior to balance reliability and storage utilization, switching from replication (high reliability, low utilization) to virtual storage (lower reliability, high utilization) when conditions permit.
2Quantity of substance
If storage mode is switched from replication to virtual storage to improve capacity utilization, then storage efficiency is improved, but data safety capability deteriorates
Solution Approach 1:
The system dynamically switches between replication and virtual storage modes based on real-time conditions. After operations completion, when access frequency decreases, the system transitions to virtual storage mode to improve capacity utilization. The system continuously monitors conditions and can switch back to replication mode if safety requirements increase, maintaining a dynamic balance between efficiency and safety.
Solution Approach 2:
The patent employs feedback mechanisms by monitoring access frequency and operational status to determine when to switch storage modes. The system uses this feedback to automatically transition between replication and virtual storage modes, ensuring that data safety requirements are met while optimizing storage utilization based on actual usage patterns.
3Quantity of substance
If data is stored in a virtual logical volume with dynamic allocation, then storage capacity utilization is improved, but access performance deteriorates due to mapping overhead
Solution Approach 1:
The system dynamically switches between virtual storage mode and replication mode based on access frequency. When access frequency is high, the system uses replication mode to avoid mapping overhead and maintain performance. When access frequency decreases, it transitions to virtual storage mode to improve capacity utilization. This dynamic adaptation resolves the contradiction by selecting the appropriate mode based on actual access patterns.
Solution Approach 2:
The patent implements periodic monitoring of access frequency and conditional switching between storage modes. The system periodically evaluates whether to switch from virtual storage to replication mode based on whether access frequency has increased beyond thresholds, thereby maintaining performance while optimizing utilization during low-access periods.
4Reliability
If replication storage mode is used to ensure data safety, then reliability is improved, but storage capacity consumption increases
Solution Approach 1:
The system dynamically adjusts its storage mode based on operational conditions. During active operations, it uses replication mode to ensure data safety. After operations completion, it switches to virtual storage mode to reduce capacity consumption. This dynamic behavior allows the system to maintain reliability when needed while minimizing storage consumption during idle periods.
Solution Approach 2:
The patent changes the storage mode parameter from replication to virtual storage based on operational phase and access frequency. This parameter change allows the system to reduce storage capacity consumption by transitioning to a more efficient storage mode when data safety requirements are satisfied through completed operations and low access frequency.
Data Source
AI summary
A storage system writes a data element stored in a primary volume to a secondary volume constituting a volume pair with the primary volume in accordance with a selected storage mode, which is a data storage mode selected from a plurality of types of data storage modes. This storage system is provided with a function for switching the above-mentioned selected storage mode from a currently selected data storage mode to a different type of data storage mode.