Veritas Quick I/O supports direct I/O and AIX Fastpath asychronous I/O and enables databases to access regular files on a VxFS file system as raw character devices.
The benefits of using Quick I/O are:
Improved performance and processing throughput by having Quick I/O files act as raw devices.
Ability to manage Quick I/O files as regular files, which simplifies administrative tasks such as allocating, moving, copying, resizing, and backing up DB2 containers.
Ability to manage Quick I/O files as regular files, which simplifies administrative tasks such as allocating, moving, copying, resizing, and backing up Sybase dataservers.