A backup repository is a folder in a blob container where Veeam Backup for Microsoft Azure stores image-level backups of Azure VMs and backups of Azure SQL databases.
To communicate with a backup repository, Veeam Backup for Microsoft Azure uses Veeam Data Mover — the service that runs on a worker instance and 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 to enable data transfer. To learn how Veeam Backup for Microsoft Azure communicates with backup repositories, see Managing Backup Repositories.
Backup files are stored in backup repositories in the native Veeam format and must be modified neither manually nor by 3rd party tools. Otherwise, Veeam Backup for Microsoft Azure may fail to restore the backed-up data.
Encryption on Backup Repositories
For enhanced data security, Veeam Backup for Microsoft Azure allows you to enable encryption at the repository level. Veeam Backup for Microsoft Azure encrypts backup files stored in backup repositories the same way as Veeam Backup & Replication encrypts backup files stored in backup repositories. To learn what algorithms Veeam Backup & Replication uses to encrypt backup files, see the Veeam Backup & Replication User Guide, section Encryption Standards.
To learn how to enable encryption at the repository level, configure the repository settings as described in section Adding Backup Repositories Using Web UI, and choose whether you want to encrypt data using a password or using an Azure Key Vault cryptographic key.
Limitations for Repositories
To use a blob container as a target location for backups, you must connect to an Azure storage account in which this blob container resides, as described in section Adding Backup Repositories Using Web UI.
Veeam Backup for Microsoft Azure supports the following types of Azure storage accounts:
Storage Account Type
Supported Performance Tiers
Supported Access Tiers
Hot, Cool, Archive
Hot, Cool, Archive
Consider the following limitations for storage accounts: