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B-1
APPENDIX
B
Components
This Appendix describes each component making up SPARC Enterprise.
For the most up-to-date information, contact a certified service engineer.
TABLE B-1 gives the name and abbreviation of each component, and whether active
replacement and hot replacement can be applied to each, together with the chapter
and the section where the replacement procedure is explained.
A circle symbol ( ) means a component is replaceable. A dash (—) means a
component is not replaceable.
TABLE B-1 FRU Components of High-end Server Models
Name: Abbreviation
Active
replacement
Hot
replacement Replacement procedure
CPU memory board unit: See B.1 CMU (*1) Chapter 6
• CPU module: See B.2 CPUM (*1) Chapter 6
In case of SPARC64 VI
CPUM (*1) Chapter 6
In case of SPARC64 VII
• Memory: See B.3 MEM (*1) Chapter 6
I/O unit: See B.4 IOU (*1) Chapter 7
• Hard disk drive: See B.5 HDD Chapter 12
• PCI cassette: See B.6 PCICS (*2) Chapter 13
• IOU Onboard Device Card: See B.7 IOUA — (*3) Chapter 13
• External I/O expansion unit
connection card: See B.8
PCIB-EX (*2) Chapter 13
Crossbar Unit: See B.9 XBU_B — — Chapter 17
Clock Control Unit: See B.10 CLKU_B — — Chapter 16