NOTE: Bandwidth specified by the ISP is the total available bandwidth. The outgoingbandwidth is shared by all devices on the network. Make sure that there is enough freebandwidth for replication to accommodate the change rate.Number ofAgentsIt is important to consider the number of agents protected per source core and how many youplan to replicate to the target. AppAssure 5 lets you perform replication on a per protectedserver basis, so you can choose to replicate certain servers. If all protected servers must bereplicated, this drastically affects the change rate, particularly if the bandwidth between thesource and target cores is insufficient for the amount and size of the recovery points beingreplicated.Depending on your network configuration, replication can be a time-consuming process.The following table shows examples of the necessary bandwidth per Gigabyte for a reasonable change rateNOTE: For optimum results, adhere to the recommendations listed in the following table.Table 1. Maximum Change Rate for WAN Connection TypesBroadband Bandwidth Max Change RateDSL 768 Kbps and up 330 MB per hourCable 1 Mbps and up 429 MB per hourT1 1.5 Mbps and up 644 MB per hourFiber 20 Mbps and up 838 GB per hourIf a link fails during data transfer, replication resumes from the previous failure point of the transfer after linkfunctionality is restored.Roadmap For Performing ReplicationTo replicate data using AppAssure 5, you must configure the source and target cores for replication. After you configurereplication, you can then replicate agent data, monitor and manage replication, and perform recovery.Performing replication in AppAssure 5 involves performing the following operations:• Configure replication on the source and target machines.• Replicate a new agent attached to the source core.• Replicate an existing agent.• Set replication priority for an agent.• Monitor replication as needed. For more information on monitoring replication, see Monitoring Replication.• Manage replication settings as needed.• Recover replicated data in the event of disaster or data loss.Configuring ReplicationAppAssure 5 provides two options for configuring replication, which are described in the following procedures:• Configuring Replication for a Self-Managed Core• Configuring Replication for a Core Managed by a Third Party61
