Failover Recovery Validation Using VM Test Subsets
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Solution Overview
Problem
Performing a full failover procedure for virtual machines to test backup and recovery processes consumes significant processing resources and bandwidth, necessitating a more efficient method to validate these procedures without full resource utilization.
Innovation Solution
Implementing a subset of test procedures for a subset of virtual machines, including network and storage configuration testing, to generate a success metric indicating the functionality of backup and recovery processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a full failover procedure is performed to test backup and recovery processes, then the reliability of backup and recovery is validated, but the processing resources and bandwidth consumed increase significantly
Solution Approach 1:
The failover procedure is divided into multiple discrete validation steps (e.g., validating configuration files, testing network connectivity, verifying storage accessibility) that can be executed independently. This segmentation allows the system to validate critical recovery components without executing the complete failover process, thereby reducing resource consumption while maintaining validation effectiveness.
Solution Approach 2:
Instead of performing the complete failover procedure, the system executes a partial validation set that includes only the essential steps needed to confirm backup and recovery functionality. This partial action approach validates sufficient reliability indicators without the full resource expenditure of a complete failover test.
2Reliability
If a full failover procedure is executed to ensure recovery functionality, then the confidence in recovery effectiveness is improved, but the time required for validation increases
Solution Approach 1:
The validation process is segmented into prioritized validation steps that can be executed in parallel or sequential order based on criticality. Non-critical validation steps can be skipped or accelerated, allowing the system to achieve sufficient confidence in recovery effectiveness more quickly without waiting for the complete failover procedure to finish.
Solution Approach 2:
The system performs preliminary validation of configuration files, network settings, and storage accessibility before attempting the full failover procedure. These preliminary actions identify potential issues early and validate critical recovery prerequisites, reducing the overall validation time while maintaining confidence in recovery effectiveness.
Data Source
AI summary
A storage appliance may be configured to perform a method to evaluate a failover procedure. The method may include receiving a trigger indication to perform a test failover procedure for a plurality of virtual machines and identifying, based on receiving the trigger indication, a set of procedures for performing a full failover procedure on a target system based at least in part on a recovery configuration for the plurality of virtual machines. The method may include selecting a subset of test procedures of the set of procedures, causing execution on the target system of the subset of test procedures on a subset of virtual machines of the plurality of virtual machines, and calculating, based at least in part on the execution of the subset of test procedures on the subset of virtual machines, a success metric associated with the full failover procedure for the plurality of virtual machines.