A service experiences partial downtime that affects some production servers. The organization wants to restore these servers while keeping unaffected resources online and user sessions active. Which technique permits building a duplicate environment, verifying its stability, and then shifting operations with minimal disruption?
Roll back the platform to a previously saved state.
Create a new set of machines to verify the stability of affected services before redirecting operations.
Reimport a recent snapshot to restore system functionality.
Overwrite the existing systems with fixes to restore functionality.
Building a duplicate environment, also known as a parallel approach, allows testing in a safe setting. When it meets requirements, the affected systems can be swapped out, avoiding disruption for ongoing sessions. Overwriting existing resources could create downtime, rolling back systems might affect healthy servers, and restoring the environment in bulk could affect those already functioning properly.
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