Home > Storage > PowerScale (Isilon) > Product Documentation > Networking > Dell PowerScale: Network Design Considerations > Replication traffic over dedicated WAN links
Depending on the network topology and configuration, in certain cases PowerScale SyncIQ data may be sent across a dedicated WAN link separated from client traffic. Under these circumstances, the recommended option is using a different subnet on the PowerScale cluster for replication traffic, separated from the subnet for user data access.