The EMC® Data Domain® system exposes pre-made disk volumes called storage units to an EMC® Data Domain® Boost (DD Boost™)-enabled backup server. Each Storage Unit is a top-level subdirectory of the /data/col1 directory; there is no hierarchy among Storage Units. When used with vRanger, a DD Boost repository is configured at the Storage Unit level, meaning each DD Boost repository in vRanger equates to exactly one Storage Unit.
The distributed segment processing option is configured on the EMC® Data Domain® system and applies to all the backup servers and the EMC® Data Domain® Boost (DD Boost™) Libraries installed on them. For more information, see .
Distributed segment processing is enabled by default on a system initially installed with Data Domain OS 5.2. If a system is upgraded from Data Domain OS 5.0.x to Data Domain OS 5.2 or later, distributed segment processing is left in its previous state.
If an interface group is configured, when the EMC® Data Domain® system receives data from the backup server clients, the data transfer is load balanced and distributed as separate jobs on the private network, providing higher input and output throughput, especially for customers who use multiple 1 GbE connections.
The interface registered with vRanger is used by vRanger and the DD Boost Library to communicate with the Data Domain system. If this interface is not available, backups to that Data Domain system are not possible.
After the interface group is set up, you can add or delete interfaces from the group. You can manage Advanced Load Balancing and Link Failover — an interface group — by using the ddboost ifgroup command or from the Enterprise Manager Data Management > DD Boost view. For more information, see the EMC Data Domain Operating System Administration Guide.
With EMC® Data Domain® Boost (DD Boost™), vRanger can control replication between multiple EMC® Data Domain® systems and provide backup administrators with a single point of management for tracking all backups and duplicate copies. This configuration lets you efficiently create disaster recovery (DR) copies of your backups over the WAN, and track all the copies using the vRanger catalog for easy recovery.