Data in the enterprise doubles every 18 months. How long before buying storage and managing ballooning data sucks up all available IT bandwidth? Enter data deduplication. So much business data is redundant, from e-mail attachments to backup sets, that deduplication solutions, such as the Data Domain DD660 Appliance shown here, typically yield dramatic results. In backup applications, 50 percent reductions in the need for disk space are common. In the coming years, we expect data deduplication to place an increasingly important role in the primary storage tier as well.