The M6412-A FC drive enclosure has dual redundant hot plug FC I/O/Environmental Monitoring Unit (EMU) modules that allow the controllers to distribute I/Os between the two modules and provides redundant paths should either FC I/O module become unavailable and the EMU functionality allows you to monitor and report the condition of the power supplies and fans. The enclosure also has dual redundant hot plug power supplies and dual hot plug blowers. The enclosure also has a hot plug Environmental Monitoring Unit (EMU). The M6412-A drive enclosure provides point to point connectivity within the enclosure.