Home > Data Protection > PowerProtect DD Series Appliances > Dell PowerProtect DD Series Appliances and Commvault Integration Guide > DD Replicator overview and requirements
DD Replicator provides automated, policy-based, network-efficient, and encrypted replication for DR (disaster recovery) and multisite backup and archive consolidation. DD Replicator asynchronously replicates only compressed, deduplicated data over a WAN (wide area network). DD Replicator performs two levels of deduplication to significantly reduce bandwidth requirements: local and cross-site deduplication. Local deduplication determines the unique segments to be replicated over a WAN. Cross-site deduplication further reduces bandwidth requirements when multiple sites are replicating to the same destination system.
With cross-site deduplication, any redundant segment that was previously transferred by any other site, or that resulted from a local backup or archive, will not be replicated again. This function improves network efficiency across all sites and reduces daily network bandwidth requirements up to 99 percent, making network-based replication fast, reliable, and cost-effective. To meet a broad set of DR requirements, DD Replicator provides flexible replication topologies, such as full system mirroring, bi-directional, many-to-one, one-to-many, and cascaded. In addition, you can choose to replicate either all or a subset of the data on your DD system. For the highest level of security, DD Replicator can encrypt data being replicated between DD systems using the standard Secure Socket Layer (SSL) protocol.
Before getting started with DD Replicator, note the following general requirements: