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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 12. Performance considerations for Linux 467
eam managed
reqcap (blocks) 209715200
realextents 100
virtualextents 0
migrating 0
perfgrp PG0
migratingfrom -
resgrp RG0
==============Rank extents==============
rank extents
============
R1 85
R17 7
R18 8
Example 12-12 on page 466 shows the properties of the logical volume. The following
information can be discovered for the volume:
򐂰 Occupies three ranks (R1, R17, and R18)
򐂰 Belongs to volume group V17
򐂰 Is 100 GB in size
򐂰 Uses an extent allocation method (EAM) that is
managed by Easy Tier
򐂰 Uses a standard storage allocation method (SAM)
򐂰 Is a regular, non-thin provisioned volume
Collecting physical disk ...
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Publisher Resources

ISBN: 0738436836Purchase book