Windows Failover Cluster - Warning NIC

António Simões 0 Reputation points


I have a windows failover cluster with 2 nodes (Server1; Server2) In this cluster I have 8 Roles each one with their own IP.

I recently notice a critical event mentioned the following:

Node Server2 is reachable from Node Server1 by only one pair of network interfaces.

It is possible that this network path is a single point of failure for communication within the cluster.

Please verify that this single path is highly available, or consider adding additional networks to the cluster.

I have only 1 NIC on each server. What is the best way to resolve this?

Thank you

Windows Server Clustering
Windows Server Clustering
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Clustering: The grouping of multiple servers in a way that allows them to appear to be a single unit to client computers on a network. Clustering is a means of increasing network capacity, providing live backup in case one of the servers fails, and improving data security.
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  1. Ian Xue (Shanghai Wicresoft Co., Ltd.) 33,941 Reputation points Microsoft Vendor


    As the event pointed out, your network path is a single point of failure for communication within the cluster because you have only one NIC on each server. If you want to remove the warning, you have to add a second NIC for each of your servers to ensure there are multiple network paths.

    Best Regards,

    Ian Xue

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