Requirements for iSCSI Port Binding

You can use multiple VMkernel adapters bound to iSCSI to have multiple paths to an iSCSI array that broadcasts a single IP address.

When you use port binding for multipathing, follow these guidelines:

• iSCSI ports of the array target must reside in the same broadcast domain and IP subnet as the VMkernel adapters.
• All VMkernel adapters used for iSCSI port binding must reside in the same broadcast domain and IP subnet.
• All VMkernel adapters used for iSCSI connectivity must reside in the same virtual switch.

Do not use port binding when any of the following conditions exist:

• Array target iSCSI ports are in a different broadcast domain and IP subnet.
• VMkernel adapters used for iSCSI connectivity exist in different broadcast domains, IP subnets, or use different virtual switches.