Chapter 11.3.2. Storage administrator and AIX LVM administrator roles
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Chapter 11. Applications 205 layers, and avoid the performance problems and hot spots that come with poor data layout. Your goal is to balance I/ Os evenly across the physical disks in the back- end storage devices. You can treat sequential I/ O applications the same as random I/ O applications unless the sequential rate is high enough to matter. We will specifically show you how to lay out storage for DB2 ® applications as a good example of how an application might balance its I/ Os within the application. There are also different implications for the host data layout based on whether you utilize image mode or striped mode VDisks. 11.3.1 Layers of volume abstraction ...
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