Handle Unexpected Behavior in RDS Instance Storage Change

Problem Description

Your database team is testing whether changing an RDS instance's allocated storage from 20GB to 100GB triggers instance replacement. During your first test run, you observed some unexpected behavior - the CloudFormation events showed a mix of MODIFY and UPDATE events that don't clearly indicate whether a replacement occurred, and the deployment took longer than expected with some warnings in the event log.

This ambiguous result requires careful analysis and potentially repeating the test to confirm the behavior is consistent.

Output Specification

Create a file analysis-and-response.md that documents:

1. Initial Test Analysis: How you would analyze the ambiguous results from the first test run
2. Decision Process: A decision tree or checklist for determining what to do based on different failure/success/ambiguous scenarios including:
   • What to do if initial deployment fails
   • What to do if events show unexpected behavior during the update
   • What to do if results are ambiguous or unclear
   • When to repeat the test for confirmation
3. Repeatability Plan: If the test needs to be repeated, document:
   • What would be cleaned up from the first test
   • What would be verified before the second run
   • What additional data would be collected
   • How many repetitions would confirm the behavior

The document should demonstrate understanding of proper validation gates and when to stop, investigate, or repeat testing.