Hello,
The best place for this information will be the Netbackup Deduplication Administrators Guide:
http://www.symantec.com/business/support/index?page=content&id=DOC6466
Make sure to note the requirements for using Deduplication:
From pg.47
Enough bandwidth on the storage network to satisfy your throughput objectives. Symantec
supports iSCSI on storage networks with at least 10-Gigabit Ethernet network bandwidth.
Symantec recommends the Fibre Channel storage networks with at least 4-Gigabit network
bandwidth.
Thank you,
Bryan