In releases earlier than 4.7.410, the two vSAN data nodes must be directly connected using SFP+ or Cat6 cables. Starting with VxRail 4.7.410, the two vSAN data nodes can be connected through the switch.
The following physical layout is enforced:
- Either a 1/10/25 GbE switch is supported. 1 GbE switch is only supported in a directly connected configuration.
- For 1/10 GbE
- Ports 1 and 2 of the VxRail Appliances are connected to a switch and used for the management and witness traffic. If the ports are connected to a 1 GbE switch, port speed auto-negotiates down to 1 Gb.
- If direct-connect is desired, Ports 3 and 4 from Node 1 are directly connected to Ports 3 and 4 of Node 2 respectively and are used for vSAN and vMotion traffic.
- For 25 GbE
- Ports 1 and 3 of the VxRail Appliances are connected to a switch. Ports 2 and 4 are direct-connect.
- If switched configuration is desired, all four ports must be connected to the switches.
Figure 1. 4 x 10 GbE Direct-connect port configuration
Figure 2. 4 x 10 GbE ToR switch port configuration single switch (left) dual switch (right)