Disk-based backup took the market by storm several years ago with a compelling proposition: replace tape with high-speed disk to speed up and simplify backup. Since this successful introduction, Disk-to-Disk storage (D2D) vendors have been busy broadening their capabilities with features like higher performance, greater scalability, and de-duplication. Today, these broad capabilities and more put D2D in an ideal position to increase an organization's insight into their backup infrastructure and storage.