AWS - RDS and Relational Databases
Given an RDS instance with 100 GB of gp3 storage and 7 days backup retention, which factor will increase the monthly cost the most?
Given an RDS instance with 100 GB of gp3 storage and 7 days backup retention, which factor will increase the monthly cost the most?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze cost impact of backup retention
Backup storage beyond allocated free backup size adds cost, but increasing retention from 7 to 35 days may add moderate cost.Step 2: Analyze cost impact of storage increase
Doubling storage from 100 GB to 200 GB doubles storage cost, which is a significant monthly cost increase.Step 3: Analyze instance type and engine changes
Changing to smaller instance reduces cost; engine change does not affect pricing directly.Final Answer:
Increasing storage from 100 GB to 200 GB -> Option DQuick Check:
Storage size increase = biggest cost rise [OK]
Quick Trick: Storage size impacts monthly cost more than backup days [OK]
Common Mistakes:
- Assuming backup retention always costs more
- Thinking smaller instance increases cost
- Believing engine type changes price
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