Storage Node Switch Data Collision Prevention
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Solution Overview
Problem
In data storage systems, switching from a primary storage node to a backup node can cause data collisions and resource inefficiencies due to ongoing data backup operations, particularly when the regular backup node is not synchronized in real-time with the primary node, leading to costly full backups and resource wastage.
Innovation Solution
A method that determines if there is an ongoing data backup operation between the primary and regular backup nodes during a switch, ceasing the data backup operation to prevent collisions and allowing incremental backups based on common snapshots, thereby avoiding full backups and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time backup storage node switches to primary storage node, then service availability is improved, but data collision occurs with ongoing regular backup operations
Solution Approach 1:
The system performs preliminary detection to check whether a regular backup operation is in progress before executing the switch operation. If a backup is detected, the switch is postponed or adjusted to avoid data collision. This preliminary checking mechanism prevents the harmful effect of data collision while maintaining service availability.
2Loss of energy
If regular backup operation continues during node switch, then backup cost is reduced, but data consistency is compromised
Solution Approach 1:
The system implements feedback by detecting the status of regular backup operations and using this information to control the timing of switch operations. The detection mechanism provides feedback about ongoing backups, and the switch operation is adjusted based on this feedback to ensure data consistency while allowing regular backups to continue.
3Manufacturing precision
If full backup is performed after data collision, then data consistency is restored, but resource consumption increases
Solution Approach 1:
The system applies preliminary anti-action by preventing data collision from occurring in the first place through the detection mechanism. By detecting ongoing regular backup operations before the switch, the system avoids the need for corrective full backups, thereby preventing resource consumption associated with restoring data consistency after collision.
Data Source
AI summary
Techniques perform data backup. Such techniques involve: in response to a first storage node to be switched to a second storage node, determining whether there is an ongoing data backup operation between the first storage node and a third storage node; and in response to the ongoing data backup operation between the first and third storage nodes, ceasing the data backup operation. The second storage node is used for backing up data of the first storage node in real time and the third storage node is used for backing up the data of the first storage node periodically. Accordingly, colliding operations can be prevented, system resource can be saved and processing efficiency can be improved.