Managing Backup Repositories
Veeam Backup for AWS uses Amazon S3 buckets as target locations for EC2 instance image-level backups, additional copies of Amazon VPC backups, indexes of EFS file systems and Veeam Backup for AWS configuration backups. To store backups in Amazon S3 buckets, configure backup repositories. A repository is a specific folder created by Veeam Backup for AWS in an Amazon S3 bucket.
A backup repository must not be managed by multiple backup appliances simultaneously. Retention sessions running on different backup appliances may corrupt backups stored in the repository, which may result in unpredictable data loss.
To communicate with the backup repository, Veeam Backup for AWS uses the Veeam Data Mover — the service running on a worker instance that is responsible for data processing and transfer. When a backup policy addresses the backup repository, the Veeam Data Mover establishes a connection with the repository enabling data transfer. To let the Veeam Data Mover access the target Amazon S3 bucket, Veeam Backup for AWS uses permissions of an IAM role specified in backup repository settings.
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