Logical volume and disk I/O performance

This topic focuses on the performance of logical volumes and locally attached disk drives.

If you are not familiar with the operating system concepts of volume groups, logical and physical volumes, or logical and physical partitions, read Performance overview of fixed-disk storage management.

Deciding on the number and types of hard disks, and the sizes and placements of paging spaces and logical volumes on those hard disks is a critical pre-installation process because of the performance implications. For an extensive discussion of the considerations for pre-installation disk configuration planning, see Disk pre-installation guidelines.