Using the end-host mode (EHM), each server is pinned automatically to an uplink port based on round-robin algorithm. Like the Ethernet end-host mode, pin groups can be configured as a static pin group or dynamic pin group. The default configuration is a dynamic pin group.
This is the default pin group setting. In dynamic pinning, the Fabric Interconnect automatically binds server vHBAs to uplink Fabric Interconnect FC/FCoE ports.
In case of an uplink failure, server vHBAs are re-pinned to the remaining uplinks of the same Fabric Interconnect. In case of a complete Fabric Interconnect failure, the operating system (Windows, Linux, or hypervisors) relies on its multipath drives (such as MPIO and EMC PowerPath) to re-route I/O for the failed path. If the operating system configuration is missing, FC communication will fail until one FC uplink is restored on the failed Fabric Interconnect.
This behavior is different from the...