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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
12 DS8800 Performance Monitoring and Tuning
Use the automatic mode of Easy Tier to relocate your extents to their most appropriate
storage tier in a hybrid pool, based on usage. Because workloads typically concentrate I/O
operations (data access) on only a subset of the extents within a volume or LUN, automatic
mode identifies the subset of your frequently accessed extents. It then relocates them to the
higher-performance storage tier.
Subvolume or sub-LUN data movement is an important option to consider in volume
movement because not all data at the volume or LUN level becomes hot data. For any
workload, there is a distribution of data considered either hot or cold. Significant overhead
can be associated with moving entire volumes between ...
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Publisher Resources

ISBN: 0738436836Purchase book