does dedup exists between replication nodes

OK, two same answer from EMC employee give me confidence. .
I have not submit any SR about this. thanks.

I am a bit concerned about the answer you got from Support.

Normally replication does dedup between nodes, so unless there is some extenuating circumstance they are incorrect.

What was the SR number for that and I will follow up.

Thanks for reply. any document support this? because i asked emc china, they say no dedup between replication. but i would rather believe you,

Do not beleive us see the Admin guide:-

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Efficient Data Transfers.
Replication is accomplished by way of highly
efficient, asynchronous Internet Protocol (IP) data transfers, which can be
scheduled during off-peak hours to make optimum use of network bandwidth.
Additionally, like other members of the Avamar product family, replication uses
sophisticated data deduplication technology that finds and eliminates redundant
sequences of data before it is sent to the destination server, thereby reducing
network traffic and promoting efficient use of hard disk storage.
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From page 316 of 4.1 System Admin Manual Rev A02.

The only exeption I can think of off hand is that if you are doing root to root replication and it is completly new data the first time it comes across it will move all the data, as it is not aware of it. But this is normal behaviour, once you have moved it to a grid and to the same datastructure on that Avamar grid it should only move changes across the network.

thanks a lot. this is what i want.