Aging-Aware Data Replication Through Storage Disk Migration
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Solution Overview
Problem
Existing data replication methods face challenges in reducing data loss and improving storage system performance, particularly when the source storage device fails during data transmission or when large volumes of data need to be replicated.
Innovation Solution
A data replication method that involves determining the aging degree of storage disks and migrating data from lower-performance disks to higher-performance disks before replication, optimizing the transmission time based on aging and RPO windows to enhance efficiency and reduce data loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data replication is performed directly from second-type storage disk to destination storage device, then replication process is simple, but replication efficiency is low and data loss risk increases
Solution Approach 1:
The patent applies preliminary action by migrating data from the second-type storage disk to the first-type storage disk before the actual replication process. The system determines aging degrees of storage disks and proactively moves data from older, slower disks to newer, faster disks in advance, so that when replication is needed, the data is already positioned on optimized storage media, thereby improving replication efficiency without adding complexity to the core replication function.
2Reliability
If data transmission time is extended to ensure complete replication, then data loss risk decreases, but system performance and responsiveness deteriorate
Solution Approach 1:
The patent applies parameter changes by dynamically determining aging degrees of storage disks and using these parameters to make intelligent decisions about data migration and replication timing. The system changes the parameter of storage disk selection based on aging information, migrating data from older disks to newer disks when aging degrees exceed thresholds, thereby optimizing the balance between transmission time and data loss prevention without requiring extended transmission periods.
3Reliability
If storage disk aging is not considered in replication process, then replication process is straightforward, but data loss likelihood increases due to disk failure
Solution Approach 1:
The patent applies feedback by continuously monitoring the aging degrees of storage disks and using this information to dynamically adjust data replication strategies. The system determines aging degrees as feedback parameters, compares them against predefined thresholds, and automatically triggers data migration from older to newer disks when necessary. This feedback mechanism reduces data loss risk by proactively addressing disk aging issues while maintaining a relatively simple replication process through automated decision-making.
Data Source
AI summary
Data replication is described. An example method includes determining an aging degree of a first-type storage disk in a source storage device and determining a transmission time length for replicating target data from a second-type storage disk in the source storage device to a destination storage device, wherein the target data is stored in the second-type storage disk in the source storage device. Based on the transmission time length and the aging degree, it can be determined to migrate the target data from the second-type storage disk to the first-type storage disk, and, accordingly, the target data can be replicated from the first-type storage disk in the source storage device to the destination storage device. The data replication of the described technology can significantly improve data replication efficiency, and reduce the possibility of data loss, thereby significantly improving the performance of a storage system.