Administrator Guide

1. On the source cluster, select NAS, expand Local Volumes, and select the NAS volume that you are replicating.
2. Click Replicate.
3. Click Yes.
4. (Optional) Display the Alarms and Operations toolbar and click the Failback Operations tab.
NAS Replication Network Architecture
NAS replication depends on specic network capabilities, such as TCP ports opened over a secure tunnel and communication using
the storage area network (SAN).
NAS replication opens several TCP ports. The ports are opened over a secure tunnel between the source NAS cluster and the
destination NAS cluster. The ports are opened during each replication cycle.
Communication between clusters occurs over several ports as well as in both directions over the SAN.
Data ow for NAS replication occurs over the SAN network exclusively. Data ows between Ethernet ports on each NAS controller.
See Figure 27. NAS Replication Data Flow for a high-level diagram of NAS replication data ow.
Figure 27. NAS Replication Data Flow
Network Setup and Component Requirements
Specic network conguration requirements must be met for replication to function.
NAS replication network requirements include:
• A path through the rewall for the SAN’s physical and logical ports/IP addresses used on the:
– Dell EqualLogic arrays
– NAS controllers
• A path through the rewall for the appropriate TCP/UDP ports
• Static routes (required only when using a wide area network [WAN])
NOTE: As of v3.0, jumbo frames are not required for WANs or the SAN network.
The following physical NIC (Network Interface Controller) ports and IP addresses must be accessible through the rewall.
SAN ports:
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