Explanation/Reference:
Enabling cluster HA and switchless-cluster in a two-node cluster
If you have a two-node switchless configuration that uses direct-cable connections between the nodes
instead of a cluster interconnect switch, you must ensure that the switchless-cluster-network option is
enabled. This ensures proper cluster communication between the nodes.
Steps
1. Enter the following command to enable cluster HA:
cluster ha modify -configured true
If storage failover is not already enabled, you will be prompted to confirm enabling of both storage failover
and auto-giveback.
2. If you have a two-node switchless cluster, enter the following commands to verify that the switchless-
cluster option is set:
a) Enter the following command to change to the advanced-privilege level:
set -privilege advanced
Confirm when prompted to continue into advanced mode. The advanced mode prompt appears (*>).
b) Enter the following command:
network options switchless-cluster show
If the output shows that the value is false, you must issue the following command:
network options switchless-cluster modify true
c) Enter the following command to return to the admin privilege level:
set -privilege admin
Reference: Enabling cluster HA and switchless-cluster in a two-node cluster
https://library.netapp.com/ecmdocs/ECMP1196905/html/GUID-CE8ADA56-E05B-4398-A7E2-
05C7BD816467.html