Data deduplication for secondary storage is prompting as much passion from vendors as it is confusion for some users. Why? Because dedupe is one of those influential, crucial technologies that comes along every few years.

Deduplication promises to reduce the transfer and storage of redundant data, which optimizes network bandwidth and storage capacity. Storing data more efficiently on disk lets you retain data for longer periods or "recapture" data to protect more apps with disk-based bac...