Overview of File Systems

A file system is a structure of directories used to organize and store files. The term file system is used to describe:

• A particular type of file system: disk-based, network-based, or virtual

• The entire file tree from the root directory downward

• The data structure of a disk slice or other media storage device

• A portion of a file tree structure that is attached to a mount point on the main file tree so that it is accessible

Usually, you can tell from context which meaning is intended.

The Solaris operating environment uses the virtual file system (VFS) architecture, which provides a standard interface for different file system types. The VFS architecture enables the kernel to handle basic operations, such as reading, writing, and listing files; and makes it easier to add new file systems.

Administering file systems is one of your most important system administration tasks. Read this chapter for file system background and planning information. Refer to other chapters in the System Administration Guide for instructions about the following tasks: