Limitations

The following article presents limitations of Amazon EC2 Plugin.

Application consistency

By default, Amazon EBS snapshots are crash consistent, not application consistent. However, AWS allows for configuration to achieve application consistency, as detailed in the following article: https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/application-consistent-snapshots.html

An alternative method to ensure application consistency is by enabling the backup parameter “shutdown”. This will shut down the associated instances before taking the snapshot and restart them afterward. It is important to note that this process will result in a service disruption for the associated instances during the snapshot creation period. Additionally, if any issues occur with the Bacula service, File Daemon operations are terminated, or network connectivity is lost, the instances may not be able to restart. Therefore, this feature should be utilized with caution and careful consideration.