Symantec Concurrent I/O improves the performance of regular files on a VxFS file system without the need for extending namespaces and presenting the files as devices. This simplifies administrative tasks and allows databases, which do not have a sequential read/write requirement, to access files concurrently. This chapter describes how to use the Concurrent I/O feature.

Quick I/O is an alternative solution for DMS tablespaces.

In some cases (for example, if the system has extra memory), Cached Quick I/O may further enhance performance.

See About Cached Quick I/O.