To fulfill the 3-2-1 rule’s requirement for an offsite backup, a repository backed by an Overland Tandberg RDX removable storage media has been used. The action of swapping to a new medium causes Veeam Backup & Replication jobs failure due to inability to find the previous backup file(s).
By default, in case some of the previous backup files in the backup chain are missing, the job fails due to backup chain inconsistency.
To support RDX changeable media, additional configuration steps are required to let Veeam Backup & Replication know that rotated drives are used. Please enable the rotated drives option in the repository settings.
Please consider limitations incurred by the usage of backup repositories with rotated drives and considerations outlined in this KB article.