To define the retention policy for a backup job, you must specify the necessary number of restore points or days in the Retention policy field in the backup job settings.
After the allowed number of restore points is exceeded, Veeam Backup & Replication applies the retention policy - so it removes the earliest restore point from the backup chain. The retention policy defines how many restore points you want to retain on disk and thus how ‘far’ you are able to roll back. To control the number of restore points in the backup chain, you must specify retention policy settings. Every successful backup job session creates a new restore point that lets you roll back VM data to an earlier point in time.
