When sizing a Files deployment based on performance requirements, the metric that is often utilized is the NFS concurrent connections. This metric measures the number of simultaneous connections to the NFS server, which directly impacts the server's performance, load capacity, and response times. While SMB concurrent connections, quantity of NFS exports, and quantity of SMB shares may also be relevant in certain contexts, the most direct measure of load and performance impact for NFS-based deployments is the number of concurrent connections.