For a customer looking for a cost-effective storage solution with good performance, while also having a limited IT staff concerned about learning new technologies, recommending Ethernet switches, a Nimble iSCSI card, and dedicated NICs for servers (Option C) is the most appropriate choice.
This configuration is cost-effective and simplifies management by using familiar Ethernet networking technology, which most IT staff are already familiar with. The Nimble iSCSI card provides the necessary storage connectivity while leveraging Ethernet infrastructure, making it easier to deploy and manage compared to Fibre Channel solutions.
Reference:
HPE Nimble Storage Connectivity Options
HPE Networking Solutions