VxFS includes the following features:
Extents allow disk I/O to take place in units of multiple blocks if storage is allocated in consecutive blocks.
Extent attributes are the extent allocation policies associated with a file.
VxFS provides fast recovery of a file system from system failure.
The VxFS file system supports extended mount
options to specify enhanced data integrity modes, enhanced performance modes, temporary file system modes, improved synchronous writes, and large file sizes.
VxFS avoids the problem of uninitialized data appearing in afile by waiting until the data has been flushed to disk before updating the new file size to disk.
VxFS supplies an option to allow users to achieve higher performance on temporary file sytems by delaying the logging for most operations.
VxFS provides superior performance for synchronous write applications.
VxFS supports files larger than two terabytes and large filesystems up to 256 terabytes.
An Access Control List (ACL) stores a series of entries that identify specific users or groups and their access privileges for a directory or file.
Backup and restore applications can leverage the Veritas Storage Checkpoint, a disk- and I/O-efficient copying technology for creating periodic frozen images of a file system.
VxFS provides online data backup using the snapshot feature.
VxFS supports quotas, which allocate per-user and per-group quotas and limit the use of two principal resources: files and data blocks.
Databases can be created on the character devices to achieve the same performance as databases created on raw disks.
Clustered file systems are an extension of VxFS that support concurrent direct media access from multiple systems.
Cross-platform data sharing allows data to be serially shared among heterogeneous systems where each system has direct access to the physical devices that hold the data.
The VxFS File Change Log tracks changes to files and directories in a file system.
The multi-volume support feature allows several volumes to be represented by a single logical object.
Dynamic Storage Tiering (DST) allows you to configure policies that automatically relocate files from one volume to another, or relocate files by running file relocation commands, which can improve performance for applications that access specific types of files.
Note
VxFS supports all UFS file system features and facilities except for linking, removing, or renaming ".
" and "..
" directory entries. These operations may disrupt file system operations.