September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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© Copyright IBM Corp. 2002 241
Appendix A. Reliability, availability, and
serviceability functions
This appendix gives an overview of the z900 functions for reliability, availability, and
serviceability (RAS). Mainframes have always been acknowledged as the leaders for RAS.
This appendix covers the following items:
“RAS concepts” on page 242
“RAS functions of the processor” on page 243
“RAS functions of the memory” on page 247
“RAS functions of the I/O” on page 249
“Other RAS enhancements” on page 250
A
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