Backup Chain

If you enable image-level backups for a backup policy, Veeam Backup for Google Cloud creates a new backup in a standard or nearline repository during every backup session. A sequence of backups created during a set of backup sessions makes up a regular backup chain.

Each Cloud SQL backup in the backup chain contains metadata that stores information about the protected instance, the backup policy that created the backup, as well as the date, time and configured retention settings. Veeam Backup for Google Cloud uses metadata to identify outdated backups, to retrieve information on the source instance configuration during recovery operations, and so on.

Note

The forever forward incremental backup method is not fully implemented for Cloud SQL instances — during every backup session, Veeam Backup for Google Cloud creates a full backup in the regular backup chain (that is, every incremental backup contains the full instance data set).

The period of time during which Cloud SQL backups are kept in the backup chain is defined by retention policy settings. For details, see SQL Backup Retention.