Fujitsu SPARC Enterprise M8000 Service Manual page 499

CPU/Memory Board Unit (CMU)
FIGURE B-1
The CMU has the following characteristics.
Active maintenance of CMUs is possible using the DR function.
■
In CMU maintenance, you can replace the target in units of CMU as a whole, CPU
■
module, or memory. To perform active maintenance, you need to pull out the CMU from
the system before replacing the target.
A CMU can be installed or removed using the DR function during system operation.
■
A dedicated LSI is mounted for system control (SC) and memory access control (MAC).
■
For the bus connecting SC and SC as well as SC and crossbar unit, a high-speed link is
■
used.
For the bus connecting SC and MAC as well as SC and CPU, a high-speed link is used.
■
For the memory, DIMM is used.
■
The CMU has a label bearing the printed component number and manufacture's serial
■
number.
Appendix B Components B-5