In replication scenarios, your appliance uses SSL 3.0 to secure the connections between the two cores ina replication topology to prevent eavesdropping and tampering.ReplicationReplication is the process of copying recovery points from an AppAssure core and transmitting them toanother AppAssure core in a separate location for the purpose of disaster recovery. The process requiresa paired source-target relationship between two or more cores.The source core copies the recovery points of selected protected machines, and then asynchronouslyand continually transmits the incremental snapshot data to the target core at a remote disaster recoverysite. You can configure outbound replication to a company-owned data center or remote disasterrecovery site (that is, a self-managed target core). Or, you can configure outbound replication to a third-party managed service provider (MSP) or the cloud that hosts off-site backup and disaster recoveryservices. When replicating to a third-party target core, you can use built-in work flows that let yourequest connections and receive automatic feedback notifications.Replication is managed on a per-protected-machine basis. Any machine (or all machines) protected orreplicated on a source core can be configured to replicate to a target core.Figure 5. Basic replication architectureReplication is self-optimizing with a unique Read-Match-Write (RMW) algorithm that is tightly coupledwith deduplication. With RMW replication, the source and target replication service matches keys beforetransferring data and then replicates only the compressed, encrypted, deduplicated data across the WAN,resulting in a 10x reduction in bandwidth requirements.Replication begins with seeding. Seeding is the initial transfer of deduplicated base images andincremental snapshots of the protected machines. The data can add up to hundreds or thousands ofgigabytes. Initial replication can be seeded to the target core using external media. This is useful for largesets of data or sites with slow links. The data in the seeding archive is compressed, encrypted anddeduplicated. If the total size of the archive is larger than the space available on the external media, thearchive can span across multiple devices. During the seeding process, the incremental recovery points18
