Replication Configurations

For volume replication to occur, two groups must be configured as partners. There are three options for how partners can be configured:

• One-way replication. One group replicates volumes to another group.
• Reciprocal replication. Two groups replicate volumes to each other.
• Centralized replication. Multiple groups replicate volumes to another group.

Figure 1: One-Way Replication shows one-way replication. AGroup and BGroup are configured as replication partners, with AGroup replicating two volumes to BGroup, which has delegated space to AGroup. From the perspective of AGroup, replication of volumes AVol1 and AVol2 is outbound. From the perspective of BGroup, replication of these volumes is inbound.

Figure 1: One-Way Replication

Figure 2: Reciprocal Replication figure shows reciprocal replication, in which both groups replicate to each other. In this configuration, AGroup has now delegated space to BGroup for storing its replica sets, and replication of volume BVol1 is outbound from BGroup and inbound to AGroup.

Figure 2: Reciprocal Replication

Figure 3: Centralized Replication shows a centralized replication configuration, in which two groups are replicating to a third group. In this configuration, CGroup has delegated space to both AGroup and BGroup.

Figure 3: Centralized Replication