Dell DL1000 Appliance User's Guide

True Global Deduplication eliminates redundant or duplicate data by performing incremental block-level backups of the machines.

The typical disk layout of a server consists of the operating system, application, and data. In most environments, the administrators often use a common version of the server and desktop operating system across multiple systems for effective deployment and management. When backup is performed at the block-level across multiple machines, it provides a more granular view of what is in the backup and what is not, irrespective of the source. This data includes the operating system, the applications, and the application data across the environment.

Figure 1. Diagram of True Global Deduplication