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Veritas File System

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The Veritas File System, or VxFS, is a file system that was developed by Veritas Software as the first commercial journaling file system. Through an OEM agreement, VxFS is used as the primary filesystem of the HP-UX operating system, although HP-UX calls it JFS. It is also supported on AIX, Linux, and Solaris. VERITAS File System was originally developed for AT&T's UNIX Systems Laboratories by VERITAS Software.

The on-disk layout of VxFS is versioned and upgradeable while the file system is mounted.

The version 5 on-disk layout of VxFS supports filesystems up to 32 terabytes in size. Individual files can be up to 2 terabytes in size. Version 5 was introduced in VxFS 3.5.

The version 6 on-disk layout supports filesystems and files up to 8 exabytes in size. Version 6 also adds support for named streams/resource forks, support for multiple underlying volumes, and file change logs. Version 6 was introduced in VxFS 4.0.

See also

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