Roadmap For Performing Replication - Dell DL4000 User Manual

the amount of data transmitted from core to core, multiple parallel streams may be
required to perform at wire speeds up to the speed of a 1 GB Ethernet connection.
Number of It is important to consider the number of protected machines per source core and
protected how many you plan to replicate to the target. AppAssure lets you perform
machines replication on a per protected server basis, so you can choose to replicate certain
servers. If all protected servers must be replicated, this drastically affects the
change rate, particularly if the bandwidth between the source and target cores is
insufficient for the amount and size of the recovery points being replicated.
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
rate
NOTE: For optimum results, adhere to the recommendations listed in the following table.
Maximum change rate for wan connection types
Table 2. Maximum change rate for wan connection types
Broadband
DSL
Cable
T1
Fiber
If a link fails during data transfer, replication resumes from the previous failure point of the transfer after
link functionality is restored.

Roadmap for performing replication

To replicate data using AppAssure, you must configure the source and target cores for replication. After
you configure replication, you can then replicate data of the protected machine, monitor and manage
replication, and perform recovery.
Performing replication in AppAssure involves performing the following operations:
• Configure self-managed replication. For more information on replicating to a self-managed target
core, see Replicating To A Self-Managed
• Configure third-party replication. Fore more information on replicating to a third-party target core,
see Replicating To A Core Managed By A Third Party
• Replicate a new protected machine attached to the source core. For more information on replicating
a protected machine, see
• Replicate an existing protected machine. For more information on configuring an agent for
replication, see Replicating Agent Data On A
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NOTE: Bandwidth specified by the ISP is the total available bandwidth. The
outgoing bandwidth is shared by all devices on the network. Make sure that
there is enough free bandwidth for replication to accommodate the change
rate.
Bandwidth
768 Kbps and up
1 Mbps and up
1.5 Mbps and up
20 Mbps and up
Core.
Replicating A New Protected
Machine.
Max Change Rate
330 MB per hour
429 MB per hour
644 MB per hour
838 GB per hour
Machine.