Hi District9,
Firstly, regarding to the IP address requirement for SQL failover cluster, it depends on several factors. For example, how many nodes you have, if the nodes are in multi-subnets and so on. For more details, please review the following similar threads.
Failover clustering-IP address required
How many ips are required for sql
server 2008 R2 cluster installation on windows cluster 2008R2?
Secondly, about the network configuration and NIC requirement, please review the following article and similar thread to get detailed information.
Understanding Requirements for Failover Clusters
Understanding two NICs requirement for SQL fail over cluster
In addition, as the issue is more related to Windows server cluster, I would recommend you post the question in the
Windows Server High Availability (Clustering) forum. It is appropriate and more experts will assist you.
Thanks,
Lydia Zhang
Lydia Zhang
TechNet Community Support
