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DS8800 Performance Monitoring and Tuning
book

DS8800 Performance Monitoring and Tuning

by Gero Schmidt, Bertrand Dufrasne, Jana Jamsek, Peter Kimmel, Hiroaki Matsuno, Flavio Morais, Lindsay Oxenham, Antonio Rainero, Denis Senin
July 2012
Intermediate to advanced content levelIntermediate to advanced
726 pages
26h 28m
English
IBM Redbooks
Content preview from DS8800 Performance Monitoring and Tuning
Chapter 2. Hardware configuration 27
Figure 2-1 DS8800 general architecture
2.2 Processor memory and cache
The DS8800 and DS8700 models offer processor memory options of 32 GB, 64 GB, 128 GB,
256 GB, or 384 GB. The DS8800 Business-Class optionally starts at 16 GB, 32 GB, 64 GB,
or 128 GB.
On all DS8000 models, each processor complex has its own system memory. Within each
processor complex, the system memory is divided into these parts:
򐂰 Memory used for the DS8000 control program
򐂰 Cache
򐂰 Persistent cache
The amount allocated as persistent memory scales according to the processor memory that
is selected.
2.2.1 Cache and I/O operations
Caching is a fundamental ...
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Publisher Resources

ISBN: 0738436836Purchase book