When you use ESXi systems with SAN storage, specific hardware and system requirements exist. ESXi Fibre Channel SAN RequirementsIn preparation for configuring your SAN and setting up your ESXi system to use SAN storage, review the requirements and recommendations. Installation and Setup StepsThis topic provides an overview of installation and setup steps that you need to follow when configuring your SAN environment to work with ESXi. N-Port ID VirtualizationN-Port ID Virtualization (NPIV) is an ANSI T11 standard that describes how a single Fibre Channel HBA port can register with the fabric using several worldwide port names (WWPNs). This allows a fabric-attached N-port to claim multiple fabric addresses. Each address appears as a unique entity on the Fibre Channel fabric.