I'm researching the advantages of using backup software that supports NDMP vs traditional backup methods (agents). I understand it allows backups/restores of heterogeneous filers. With this I won't need to map a drive drive on Windows/UNIX servers and then backup. So a benefit is less administrative tasks. Also, if the backup device is attached to a filer backing up from the filer to the device is quicker because data doesn't have to go through the backup client first. I'm interested in understanding performance benefits when other types of configurations are in play. For example, what if I'm doing a disk to disk backup. Is there really a performance improvement (network & server) with NDMP vs. mounting to the Windows/UNIX server first and then backing up to another disk? Also, I'm guessing, another benefit is full filer backup/restore is a lot easier with NDMP when there are multiple file systems on the filer.
Your input is appreciated.