Is there any data on Veeam efficiency wrt deduplication vs other deduplication methods?
As I understand is Veeam dedup inline as opposed to post process. I imagine that a post process dedupe could greatly reduce space usage of e.g. two separate full backups of two separate but similar VMs (eg same OS). How efficient would Veeam inline dedupe be in this scenario? Is the checksumming and duplicate block checking so efficient that one would achieve almost the same dedupe rates, or are the inline dedupe mainly able to match against data in the same backup job/stream?
I imagine that changed block tracking, deltas + synthetic fulls, ReFS and so on used by Veeam are contributing to a LOT of space savings, but these are not strictly dedupe tools even though the outcome is much the same, so I wonder how much dedupe in itself contributes, compared to these others.