Data Domain Virtual Edition is a software-defined data protection solution that is integrated into IDPA DP4400. Data that is sent to the DP4440 system is also deduplicated at the Data Domain level. This capability for target-side deduplication is a function of the Data Domain global deduplication engine. The global deduplication engine uses Stream-Informed Segment Layout (SISL), which assigns a unique hash identifier to each 8 KB (or larger) segment. Variable-length segmentation optimizes deduplication rates by breaking up incoming streams based on the data structure. The ability to break up data streams increases parallelization and deduplication efficiency.
The analysis of the incoming data streams occurs in RAM, which means that the Data Domain system can analyze large groups of data to maintain consistently fast backups. In addition to using memory, the Data Domain system uses a mature and proven deduplication algorithm that is designed to optimize performance and capacity. The key benefits are that similar VMs can have the same data and redundant data is deduplicated.
Real-time analysis of incoming data in the Data Domain system is referred to as inline deduplication. With inline deduplication, only unique data is sent to and stored on disk. Inline deduplication eliminates the need for a disk staging area and compute resources for post-process deduplication. The Data Domain Data Invulnerability Architecture protects the data that is written to disk. All data that is read from and written to the Data Domain system is verified, which protects against data integrity issues. Continuous fault detection and self-healing ensure that data remains recoverable throughout its life cycle on the DP4400 solution.