Configure the multipath software

Multipath software provides a redundant path to the storage array in case one of the physical paths is disrupted. The multipath software presents the operating system with a single virtual device that represents the active physical paths to the storage. The multipath software also manages the failover process that updates the virtual device. For VMware, you use the inbox Native Multipathing Plug-in (NMP).

VMware provides plug-ins, known as Storage Array Type Plug-ins (SATP), to handle the failover implementations of specific vendors’ storage arrays. The SATP you should use is VMW_SATP_ALUA.