LeoKurz wrote:BTW, when you configure a repository that the content should be de-deuplicated and you restore a backup from tape to this repository, will the backups be de-deduplicated during restore when the backups on tape are default deduplicated and compressed ?
Yes, they will.
But we are talking here about 3 stages(types) of deduplication: inline backup deduplication(processed by VBR), disk-repository hardware deduplication and tape drive deduplication. You don`t need all 3 of them at once, like in the scenario you described above.
You can either enable inline backup deduplication or hardware + tape deduplication(recommended). Thanks!