ES series NAS devices have one management interface and two Ethernet interfaces on each controller. The management interface allows users to access and manage the NAS, but is also used by certain network protocols such as AD, NTP, and SNMP. The Ethernet interfaces are dedicated to data transfer for iSCSI and shared folders.
You can configure services to use the management interface or Ethernet interfaces by enabling service binding. For more information, see Service Binding.
You can connect the Ethernet interfaces to different switches and configure the TCP/IP settings separately. The NAS acquires two IP addresses, which allow access from two different subnets. When using Qfinder Pro, the IP address of Ethernet 1 is displayed only in LAN 1 and the IP address of Ethernet 2 is displayed only in LAN 2.