If the backup chain is created with the reverse incremental backup method or contains both incremental and reverse incremental restore points, you can use a workaround scenario. You can configure an auxiliary backup copy job in addition to the initial backup copy job. The auxiliary backup copy job will produce a full backup file and you will be able to use this full backup file as a "seed" for backup copy job mapping.
To create a "seed" for the backup copy job:
|1.||Create a new, auxiliary, backup copy job. The created backup copy job must copy backups of VMs processed by the initial backup copy job. Target the created auxiliary backup copy job to some backup repository on the source side. This backup repository will be used as an intermediate one.|
|2.||Run the auxiliary backup copy job to create a full backup file (VBK) on the intermediate backup repository.|
|3.||Move the created VBK file and VBM file from the intermediate backup repository to the backup repository on the target side.|
|4.||Perform repository rescan to populate the backup repository on the target side.|
If the initial backup file was encrypted, you will need to enter a password to unlock the full backup file before you point the backup copy job to it. In the opposite case, Veeam Backup & Replication will not display the full backup file in the list of backups on the backup repository. To learn more, see Importing Encrypted Backups.
|5.||Edit settings of the initial backup copy job: point the initial backup copy job to the full backup file that you have created and moved to the target backup repository.|
|6.||Click Sync Now to start a new synchronization interval.|
As a result, Veeam Backup & Replication will use the backup file that you have created and moved to the target backup repository as a "seed", or starting point, for the backup chain produced by the initial backup copy job. When a new restore point for the VM is available on the source backup repository, Veeam Backup & Replication will transfer only incremental changes and store them next to the "seed".
When you configure an auxiliary backup copy job, make sure that its synchronization interval covers the whole chain of restore points on the backup repository from which you plan to copy backup files. The length of the synchronization interval has an impact on the algorithm of restore point selection. Veeam Backup & Replication copies only those restore points that match the following criterion:
Time of restore point creation >= current time – synchronization interval
That is, if you have a backup chain whose earliest restore point is 1 week old, you need to set the synchronization interval to one week. If you set the synchronization interval to a smaller time span, for example, 1 day, all restore points that are older than 1 day will fall out of the search scope and Veeam Backup & Replication will not transfer their data. To learn more, see Restore Point Selection.