AWS Certified SysOps Administrator – Associate (legacy) — Question 296

A user has setup an EBS backed instance and attached 2 EBS volumes to it. The user has setup a CloudWatch alarm on each volume for the disk data. The user has stopped the EC2 instance and detached the EBS volumes. What will be the status of the alarms on the EBS volume?

Answer options

• A. OK
• B. Insufficient Data
• C. Alarm
• D. The EBS cannot be detached until all the alarms are removed

Correct answer: B

Explanation

When the EBS volumes are detached, they stop sending metric data to Amazon CloudWatch. Because CloudWatch is no longer receiving data points for these metrics, the state of the associated alarms will change to Insufficient Data. Detaching EBS volumes is permitted regardless of active alarms, so they do not need to be deleted beforehand.