A fail-over test measures a specific component of an application, or infrastructure, while executing a performance test.

During a fail-over test, performance testers disable core site functionality in an attempt to analyze the behavior of an application should failures occur naturally at particular moment during an applications loading. These errors are best tested in a controlled environment.

Benefits to performing a fail-over test include:

• Verifying data errors, and measuring losses or other related problems at a certain point in an application should it cease to function
• Confirming performance impacts of component errors

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