Cause
Normally this error message will occur on the Vembu BDR backup server if the drive to which client's backup data is stored in the server is full and therefore the server is not able backup any more data for that particular client.
Solution
If you are using BDRSuite v5.1 and above, Configured repository type is Scale Out. Login to BDRSuite webconsole Backup Server->Backup Repository->Block Storage. Under Action, click edit and Choose storage volume and Update. If configured repository is Simple (or) Disk Rotation means, free up the space in the drive and schedule the failed backup and check the backup result.
If you are using VembuBDR v5.0, Configured repository type is Scale Out. Login to BDRSuite webconsole BDR Infrastructure->Backup Repository->Block Storage Under Action, click edit and Choose storage volume and Update. If configured repository is Simple (or) Disk Rotation means, free up the space in the drive and schedule the failed backup and check the backup result.
If you are using VembuBDR v4.2 and below, please check the free space available on storage volume in the backup server by navigating the page “Management - Storage Management”. In this page check the free space avail for configured storage volumes and if it's filled, then add the additional storage volumes by clicking “Edit” button.
After updating the storage management with new volumes, schedule the failed backup and check the backup result.