The synthetic full backup is a scalable solution for backing up remote offices with manageable data volumes and low levels of daily change.
If the clients experience a high rate of change daily, the incremental backups are too large. In this case, a synthetic backup is no more helpful than a traditional full backup.
Synthetic backups are supported on all media server platforms and tier one master server platforms.
More Information
Performing synthetic backups using disk storage units
Performing synthetic backups using tape storage units
Performance recommendations and limitations