Microsoft releases public beta of Data Protection Manager

Data Protection Manager is the first enterprise-level backup product released by Microsoft. It's architecture is quite interesting - it uses a combination of various technologies (Volume Shadow Copies, continuous disk-based backup for quick restore of recent data, combined with tape recovery for slow restore of old data) which ensures a near-continuous availability of backed-up data.

You can download the beta from here. There is also a technical overview of the product at this link.