Dell PowerVault NX3500 Administrator's Manual page 57

Controller MAC addresses: These are used to establish communication
with the PowerVault NX3500 controllers and perform initial configuration.
This can be found on the System Identification slide out tab located
underneath the front bezel of the controller. The back of the tab lists the
"Embedded NIC 1 MAC address". The connect button starts the co-click.
6 Click Connect to check if NAS controllers are connected and click Next.
NOTE:
The slide out tab has two MAC addresses. Ensure that you enter the
embedded NIC Address and not the iDRAC address.
7 Enter the name used to identify the NAS cluster within the web
administration interface.
8 Click Next.
The cluster name should be only alphanumeric characters with no spaces
or special characters other than dashes.
The Primary Network Configuration window is displayed.
9 Type in the required parameters and click Next.
Setting Up Your PowerVault NX3500 Solution
57