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PowerProtect DD series appliances and older Data Domain systems are disk-based appliances that run DDOS (formerly DD OS) to provide inline deduplication for data protection and disaster recovery (DR) in the enterprise environment. The DD series appliance serves as a target appliance for backup applications.
The DD series appliance provides high-speed backup and restores with scalable deduplication. It incorporates a Data Invulnerability Architecture, which delivers the highest levels of data integrity and recoverability by end-to-end verification, fault tolerance and containment and continuous fault detection and healing. Its seamless integration with existing infrastructures, enabling ease-of-use with leading backup and archiving applications, and offering superior performance with Dell PowerProtect software and Dell Data Protection Suite.
DD series appliances can be deployed physically or virtually. The virtual appliance is known as PowerProtect DD Virtual Edition (DDVE) and has some different limitations from the physical appliance, such as maximum capacity. The DD series appliance supports multiple front-end protocols such as CIFS and NFS, DD VTL, and its own DD Boost protocol. The DD series appliance can integrate with and is supported by many popular backup software offerings. It uses disk storage with deduplication. Deduplication technology and global compression reduce data down to its raw essentials by pooling redundant patterns within a file, across files, and even within a block, and stores only unique data segments. This compression algorithm aggressively minimizes the capacity needed for storing backup images.
The primary storage for DD series is called the Active Tier. DD series also supports a secondary tier called Cloud Tier. The Cloud Tier is a separate deduplication domain from the Active Tier. There is a cache disk that is set up for the Cloud Tier that is separate than the disk storage used for the Active Tier. The data is either moved from the Active Tier to the Cloud Tier-based on age of data or by an application policy from a supported backup application.
DDOS features include: