DBS-C01 Enhanced Monitoring Practice Question
A company's RDS for SQL Server instance is frequently running out of disk space. The instance uses General Purpose SSD (gp2) storage. Which monitoring step will help identify the root cause?
⚠ Common exam trap
A common trap is confusing MySQL-specific metrics (BinaryLogUsage) with SQL Server metrics. For RDS SQL Server, monitor Transaction Log Disk Usage instead.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Enhanced Monitoring
Enhanced Monitoring provides OS-level metrics such as disk space usage, which can help identify if the instance is running out of disk space due to growth of database files or logs. Option B is incorrect because BinaryLogUsage is a metric specific to MySQL, not SQL Server; RDS for SQL Server uses different metrics like Transaction Log Disk Usage. Options A and C are unrelated to instance disk space.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Review CloudTrail logs for API calls
Why it's wrong here
CloudTrail logs track API calls, not disk space metrics, so they do not help identify the root cause of disk space exhaustion.
- ✗
Monitor FreeStorageSpace and BinaryLogUsage metrics
Why it's wrong here
BinaryLogUsage is a MySQL-specific metric; RDS for SQL Server uses Transaction Log Disk Usage. Therefore this option is misleading and not correct for SQL Server.
- ✗
Monitor BackupStorageUsed metric
Why it's wrong here
BackupStorageUsed measures the total backup storage consumed, not the instance's disk space, so it does not help.
- ✓
Enable Enhanced Monitoring
Why this is correct
Enhanced Monitoring provides per-second OS-level metrics including disk utilization, which can reveal disk space consumption and help identify the root cause.
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