DPM has consistently aimed at making your backups more reliable. The transition from tape to disk as a medium for storing backups provided the first impetus to improved reliability of backups, and was delivered with DPM 2006, our first release. It also brought about novel concepts of improving the ease of use for administrators with two key innovations:
1. Think SLAs, not jobs: DPM allows you to think in terms of business goals and SLA requirements, rather than do the math for finding out what jobs need to run at what frequency and from which source to which target. You need to identify your business requirements and feed it to a wizard in DPM, and DPM figures out the rest (allocating disk space, scheduling jobs etc.) for you.
2. Alert based monitoring: You don’t have to deal with individual failures to identify the root causes. DPM filters out the noise and shows what’s actionable.
Next, DPM 2007 built on top of the innovations that had already been put in place and expanded the scope of protection to reliable support for key Microsoft workloads, while adding tape backups and disaster recovery options. The focus was to back up the application data in the consistent and supported way. This was made possible by leveraging the Volume Shadow copy Service technology in Windows, which guarantees recoverability and allows backups with minimal downtime of the application.