With Amazon FSx for Lustre, you can take automatic daily backups and user-initiated backups of persistent file systems that are not linked to an Amazon S3 durable data repository. Amazon FSx backups are file-system-consistent, highly durable, and incremental. To ensure high durability, Amazon FSx for Lustre stores backups in Amazon Simple Storage Service (Amazon S3) with 99.999999999% (11 9's) durability.
Amazon FSx for Lustre file system backups are block-based, incremental backups, whether they are generated using the automatic daily backup or the user-initiated backup feature. This means that when you take a backup, Amazon FSx compares the data on your file system to your previous backup at the block level.
Amazon FSx for Lustre can take an automatic daily backup of your file system. These automatic daily backups occur during the daily backup window that was established when you created the file system.
By default, FSx backup is enabled and the retention period is set to 7 days.
aws fsx describe-file-systems --region us-east-1 --file-system-ids fx-0aabb1234ccdd1234
aws fsx update-file-system --file-system-id fs-01234567890123456 --lustre-configuration AutomaticBackupRetentionDays=20