Exam AWS Certified SysOps Administrator - Associate topic 1 question 395 discussion

Modify the EBS volume by adding additional drive space. Log on to the EC2 instance. Use the file system-specific commands to extend the file system.

With Amazon EBS Elastic Volumes, you can increase the volume size without needing to detach the volume or restart the instance. This is the fastest and most efficient solution, as it allows you to expand the volume capacity and extend the file system without any downtime. The steps would be: 1. Log in to the EC2 instance. 2. Use the appropriate file system commands (e.g., `resize2fs` for ext4, `xfs_growfs` for XFS) to extend the file system to utilize the additional space. This is the least disruptive and quickest solution, as it does not require creating a snapshot, provisioning a new volume, or stopping the instance. The Elastic Volumes feature allows you to make the necessary changes to the EBS volume directly, with the changes taking effect immediately.

A: Modify the EBS volume by adding additional drive space. Log on to the EC2 instance. Use the file system-specific commands to extend the file system. This allows you to extend the existing EBS volume's capacity directly without having to create new volumes or copy data. It's the quickest because it directly addresses the issue of the filled EBS volume, extending its capacity to resolve the errors without having to create new volumes or copy data. You can resize the EBS volume while it is attached to the running EC2 instance, and then extend the file system within the EC2 instance's operating system. This method does not require downtime for the EC2 instance or data migration. https://docs.aws.amazon.com/ebs/latest/userguide/ebs-modify-volume.html

answer is B

after extend disk. it still needs to do some more steps from OS level.