Chapter 1 DescriptionBack Panel ComponentsScalar i500 User’s Guide 27tape drive operations. I/O blades also aggregate FC tape driveconnections, reducing switch port and cabling requirements.Each FC I/O blade has six auto-negotiating, 4 Gb/s FC ports andbackplane connections. The FC I/O blade provides two hostcommunication ports and four connection ports to FC drives. Each FCI/O blade is cooled by a fan blade that is installed next to the FC I/Oblade in the expansion module. FC I/O blades and fan blades are hot-swappable.FC I/O blades cannot be installed in the control module, so your libraryconfiguration must include at least one expansion module to include FCI/O blades. Each expansion module can house up to two FC I/O blades.Depending on the number of installed expansion modules, the library cansupport from one to four FC I/O blades. No library configuration cancontain more than four FC I/O blades. Any FC drive in the library,including drives in the control module, can be connected to an FC I/Oblade in an expansion module.The FC I/O blade indicates its status with three LED status indicators.These indicators are green, amber, and blue in color.• Green represents processor status.• Amber represents health status.• Blue represents power-control status.Figure 9 shows the FC I/O Blade, including LEDs. For more informationon the behavior of the FC I/O Blade LEDs, see Blade Status LEDs onpage 506.For information on configuring I/O blades, see Working With FC I/OBlades on page 109.For information on installing and cabling FC I/O blades and FC tapedrives, see Chapter 12, Installing, Removing, and Replacing.Note: FC I/O menu commands are available for use only when FCI/O blades are installed in the library.
