Backup up one big file with only differential data from one day to another

[Emig]

"I have a file share backup task. In the directory, there is only one large file of 450GB, and I need to keep copies of it for several days. From one day to the next, the file changes very little. Right now, Veeam is performing a full copy each day and isn’t taking advantage of the fact that the file is almost identical to the previous day's. Is there a way to retain multiple days of backups without copying the entire file each day?"

[Andreas Neufert]

Not with the NAS/File backup option.
You need to use some kind of image level backup (VM backup, Agent Backup). On what system is the 450GB file?

[Emig]

The file is in a NAS NetApp (not SAN). In fact the file is a copy of a Oracle Data Pump. Each day the file has changes but I guess almost all the blocks are the same. The issue is that we want to have a copy of al least 30 days. At this moment each day it is eating about 370Gb of NAS space, once compressed. I know that copying the files to a VM and doing a daily incremental backup of the VM will solve the problem.
But I wonder if this is not possible with the NAS
Thanks in any case

[Andreas Neufert]

Not really as there is no block level based change block tracking capability in NAS environments. The only thing outside of Veeam that comes to my mind is performing snapshots with SnapVault replicas to secondary NetApp, but these are snapshots not really backups.

The other option would be to look into backing up the Oracle Database, likely you do this already and use the pump output additionally?