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14.5.1.3.4 DS3000/DS4000 Storage Subsystem Performance Tips
Physical disks can be configured various ways with RAID levels, number of disks in each
array and number of LUNs created over those arrays. There are also various reasons for
the configurations that are chosen. One end user might be looking for ease of use and
choose to create one array with multiple LUNs, where another end user might consider
performance to be a more critical issue and select to create multiple arrays. The following
charts are meant to show possible performance affects of various configurations using the
Commercial Performance Workload.
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
© Copyright IBM Corp. 2008 Chapter 14 DASD Performance 229