VM W2012 fileserver I activated dedup and get big increments

[kte]

I activated de dedup feature in a windows 2012 fileserver. He is now deduping the files, so I guess it changes alot of blocks.
Anyone has expierience with that ? The VM is arround 7TB -> so the dedup will take some time
If the process if finished, will my incrementes go small again? Or must I change the blocksize in veeam like for SQL or exchange?

Thanks
K

[dellock6]

You mean you activated Windows 2012 Dedup inside a VM, and then this VM is saved with Veeam? Honestly I never tested this situation, but I would say you can expect large amounts of changed blocks in Veeam, since the VM is reading and writing many blocks in order to do the deduplication itself.

Luca.

[Vitaliy S.]

Agree with Luca, I expect large backup files on the incremental files as well. Changing dedupe setting to use smaller blocks (WAN) might help in this situation.

[kte]

I will wait until the dedup task is finished
Because before I had only 20 GB increment a day

K

[kte]

seems to be OK after dedup is finsihed , a little bit bigger icrements bu acceptable