Network Bandwidth affects data transfer speeds over the network but is not typically the direct cause of storage performance issues within vSphere. Over-provisioning Storage can lead to capacity issues but does not directly cause storage performance issues, though it could indirectly affect performance if it leads to overloading physical storage resources. User Permissions do not impact storage performance; they only control access to resources. Disk Latency refers to the delay that occurs when storage devices are too slow to respond to read or write requests, leading to performance bottlenecks. High disk latency can occur due to issues like over-utilization of storage resources, slower-performing disks, or an overloaded storage array, all of which can impact virtual machine performance.