B.4 I/O Unit - Fujitsu SPARC Enterprise M8000 Service Manual

B.4 I/O Unit
An I/O Unit (IOU) consists of an I/O board (IOB) with two types of control LSIs and a DDC
mounted, an HDD, and a PCI cassette. An IOU can be combined with a CMU to configure a
system (domain).
FIGURE B-4
FIGURE B-4
The IOU has the following characteristics.
Active maintenance of IOUs is possible using the DR function.
■
Active replacement of a failed IOU during system operation is possible using the DR
■
function.
An IOU can be added or removed using the DR function during system operation.
■
shows the IOU.
I/O Unit (IOU)
Appendix B Components B-9