When you use Layer 3 (L3) routed connections to access NFS storage, consider certain requirements and restructions.

Ensure that your environment meets the following requirements:

  • Use Cisco's Hot Standby Router Protocol (HSRP) in IP Router. If you are using non-Cisco router, be sure to use Virtual Router Redundancy Protocol (VRRP) instead.

  • Use Quality of Service (QoS) to prioritize NFS L3 traffic on networks with limited bandwidths, or on networks that experience congestion. See your router documentation for details.

  • Follow Routed NFS L3 best practices recommended by storage vendor. Contact your storage vendor for details.

  • Disable Network I/O Resource Management (NetIORM).

  • If you are planning to use systems with top-of-rack switches or switch-dependent I/O device partitioning, contact your system vendor for compatibility and support.

In an L3 environment the following restrictions apply:

  • The environment does not support VMware Site Recovery Manager.

  • The environment supports only the NFS protocol. Do not use other storage protocols such as FCoE over the same physical network.

  • The NFS traffic in this environment does not support IPv6.

  • The NFS traffic in this environment can be routed only over a LAN. Other environments such as WAN are not supported.