Possible scenarios for replication include:
Possible replication configurations include:
NOTE: The software Core service will replicate all data for a single agent. It is not possible to selectively replicate data. All volumes that are protected will be replicated when replication is configured.
Using seed drive for initial transfer: the initial transfer of deduplicated base images and incremental snapshots of the protected agents, which can add up to hundreds or thousands of gigabytes of data. Initial replication can be seeded to the target core using external media to transfer the initial data to the target core. This is typically useful for large sets of data or sites with slow links.
NOTE: Quest recommends that you do not use a network connection to seed the base data. Initial seeding involves potentially very large amounts of data, which could overwhelm a typical WAN connection. For example, if the seed data measures 10 GB and the WAN link transfers 24 Mbps, the transfer could take more than 40 days to complete. Because large amounts of data need to be copied to the portable storage device, Quest recommends that you use an eSATA, USB 3.0, or other high-speed connection to the portable storage device.
The data in the seeding archive is compressed, encrypted, and deduplicated. If the total size of the archive is larger than the space available on the removable media, the archive can span across multiple devices based on the available space on the media. During the seeding process, the incremental recovery points are replicated to the target site. After the target core consumes the seeding archive, the newly replicated incremental recovery points automatically synchronize.
Seeding is a two-part process (also known as copy-consume):
NOTE: While replication of incremental snapshots can occur between the source and target cores before seeding is complete, the replicated snapshots transmitted from the source to the target will remain “orphaned” until the initial data is consumed, and they are combined with the replicated base images.