Appendix B Components B-19
FIGURE B-12 eXtended System Control Facility Unit (XSCFU_C)
The XSCFU has the following characteristics.
■ The XSCFU has a duplicated configuration as the standard specification, allowing active
replacement and hot replacement of a failed XSCFU during system operation.
■ The XSCFU is the central control unit of the system and has the following functions:
■ It controls each unit.
■ It works as the console of each domain by using the TTY communication protocol.
■ It communicates with each domain by using the command-line interface.
■ It manages the device information.
■ It supports the browser-based user interface (BUI) function called XSCF Web.
■ It allows connection to maintenance terminals.
■ It supports remote maintenance services.
■ It allows interlocking control for power supply and cluster control by using a remote
cabinet interface (RCI).
■ The XSCFU has a label bearing the printed component number and manufacture's serial
number.