EV Support for Datadomain and Avamar

Can someone confirm if the below storage is supported by Enterprise Vault 10 for storing archived data. Also I would like to know if it is possible to move existing vault store partitions to DataDomain. Will this enable the benefits of deduplication feature of datadomain on those moved partitions or is it applicable to only new partition created on datadomain storage.

DataDomain MODEL : DD880
OS : 4.9.4.5-306901

Avamar : 6.1.0-402
Avamar Client Version : 6.1.100.402

Thanks!

VJ