Storage System Journal Replication History Integration
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Solution Overview
Problem
Existing data replication methods in information processing systems require significant human resource effort for operation settings and configuration maintenance, especially when transitioning between continuous and snapshot replication types to optimize Recovery Point Objective (RPO) and data transfer amounts, which can be burdensome and inefficient, particularly over shared networks.
Innovation Solution
The method involves dynamic adjustment of Recovery Point Objective (RPO) and data transfer amounts through journal type continuous replication, integrating and compacting write access histories to reduce data transfer while maintaining equivalent snapshot replication levels, minimizing changes in implementation and configuration maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous replication is executed to keep RPO short, then data synchronization is improved, but data transfer amount becomes excessive on shared lines
Solution Approach 1:
The patent merges multiple processing histories that are collectively transferred and duplicatedly addressed on the data volume for transfer. By integrating and consolidating these histories before transfer, the system reduces redundant data transmission while maintaining complete replication capability, thus lowering data transfer amounts on shared lines while preserving RPO requirements.
2Quantity of substance
If snapshot replication is executed to suppress transfer amount, then data transfer is reduced, but RPO increases
Solution Approach 1:
The patent dynamically adjusts the replication behavior by integrating multiple processing histories and allowing selective transfer based on duplication detection. This dynamic approach enables the system to adapt between continuous and snapshot-like behavior, optimizing both RPO and transfer amount according to actual data changes rather than following a fixed replication mode.
3Adaptability or versatility
If both continuous and snapshot replication types are implemented to optimize RPO and transfer amount, then replication flexibility is improved, but operation complexity increases
Solution Approach 1:
The patent creates a universal replication mechanism that handles multiple processing histories through integration and duplication detection. This single mechanism provides the flexibility of both continuous and snapshot replication without requiring separate configurations for each type, thereby reducing operation complexity while maintaining adaptability to different RPO and bandwidth requirements.
4Adaptability or versatility
If user carries out operation settings for both continuous and snapshot replication, then replication optimization is improved, but human resource burden increases
Solution Approach 1:
The patent implements self-service replication optimization by automatically detecting duplicated addresses in multiple processing histories and determining which data to transfer. The system autonomously optimizes replication parameters without requiring user configuration of both continuous and snapshot replication types, thereby reducing human resource burden while maintaining replication optimization capabilities.
Data Source
AI summary
An information processing system includes a first storage system for supplying a primary site, and a second storage system for supplying a secondary site. The first storage system is allowed to execute replication by transferring a processing history of a data volume of the first storage system to the second storage system, and to transfer multiple processing histories collectively. The first storage system integrates histories of multiple write accesses included in the multiple processing histories to be collectively transferred, which are duplicatedly addressed on the volume for transfer.