Veritas File System 5.0 Administrator's Guide (September 2006)

Quick I/O for Databases
This chapter includes the following topics:
About Quick I/O
About Quick I/O functionality and performance
About using Veritas File System files as raw character devices
About creating a Quick I/O file using qiomkfile
Accessing regular VxFS files through symbolic links
Using Quick I/O with Oracle databases
Using Quick I/O with Sybase databases
Enabling and disabling Quick I/O
Cached Quick I/O for databases
About Quick I/O statistics
Increasing database performance using Quick I/O
About Quick I/O
Quick I/O for Databases (referred to as Quick I/O) allows applications to access
preallocated VxFS files as raw character devices. This provides the administrative
benefits of running databases on file systems without the performance degradation
usually associated with databases created on file systems.
Quick I/O is part of the VRTSvxfs package, but is available for use only with other
Symantec products.
See the Veritas Storage Foundation Release Notes.
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