We need to perform a task that involves disconnecting one of the cluster interconnect cables as part of a Failover Test and during the transition from a 2-node switchless configuration to a 4-node switched cluster.
Because this procedure requires maintaining continuous service, the customer is requesting an official NetApp document or guidance confirming that disconnecting a single cluster cable does not cause any I/O interruption or noticeable I/O fluctuations.
In our internal testing, we confirmed that there was no I/O outage; however, we did observe very slight I/O fluctuations. These minor latency spikes appeared to have minimal impact on the virtual machines in the test environment.
We would appreciate any official documentation or recommendations from NetApp regarding the service assurance when a single cluster interconnect link is disconnected, including both I/O continuity and the absence of I/O fluctuation.
