VERITAS File System 4.1 Administrator's Guide

The VERITAS File System
Quality of Storage Service
Chapter 1 35
Quality of Storage Service
The Quality of Storage Service (QoSS) option is built on the multi-volume support technology
introduced in this release. Using QoSS, you can map more than one volume to a single file
system. You can then configure policies that automatically relocate files from one volume to
another, or relocate files by running file relocation commands. Having multiple volumes lets
you determine where files are located, which can improve performance for applications that
access specific types of files. QoSS functionality is a separately licensable feature that is
available with the VRTSfppm package. See Chapter 9, “Multi-Volume File Systems,” on
page 139" for more information.