"If you build it, they will come". Alfresco can store content on any storage system as long as that storage system supports an API that can be accessed by a custom implementation in Alfresco. The Content Store abstraction which Alfresco uses is extensible, and there have already been integrations with EMC Centera, S3, Azure, Snaplock.... Why should EMC Data Domain be any different? The only thing that needs to be done is implement a connector in Alfresco according to the ContentStore API interface.
