Configuring network interfaces for the HA pair

You must configure network interfaces so that if takeover occurs, interfaces on the operating node takes over interfaces on the failed-over node and hosts can still reach data over the network.

Both nodes in the HA pair must have interfaces that access the same collection of networks and subnetworks.

You must gather the following information before configuring the interfaces:
  • The IP address for both the local node and partner node.
  • The netmask for both the local node and partner node.
  • The MTU size for both the local node and partner node.

    The MTU size must be the same on both the local and partner interface.

Note: You should always use multiple NICs with interface groups to improve networking availability for both stand-alone storage systems and systems in an HA pair.

If you configured your interfaces using setup when you first applied power to your storage systems, you do not need to configure them again.

Note: For information about configuring an HA pair to use FC, see the Data ONTAP SAN Administration Guide for 7-Mode.
  1. Determine whether to use shared interfaces or dedicated and standby interfaces.
  2. Configure your interfaces on one node.
  3. Repeat Step 2 on the other node.
  4. If desired, configure automatic takeover for the interfaces or interface groups.