Lionel, is there a reason for not looking at ExaGrid as well? With this combination you will have the best performance between Veeam and and a dedupe appliance - in particular the restore performance will be what you are expecting from Veeam's great vPower technology. https://go.veeam.com/exagrid-and-veeam.html
This link is for an ESG article which will help explain: http://tinyurl.com/j33tju6
The 2 appliances can be managed as one 'grid' - and even more appliances can be added over time to the single managed entity. Replication is, of course, included in the appliances - but I would also suggest using the Veeam Copy jobs to achieve this. An important point to note, is that when using other dedupe appliances, Veeam copy jobs will require rehydration of data to create the copy. Using ExaGrid's unique architecture, the most recent backups are stored in the landing zone in a non-deduped format - ready for the copy jobs without performance impact.