Veritas 5.0 Installation Guide, HP-UX 11i v3, First Edition, May 2008
File Systems Supported on HP-UX 11i v3
Table 1-1 discusses the file systems that are supported on HP-UX 11i v3.
Table 1-1 Supported File Systems on HP-UX 11i v 3
DescriptionFile System Type
HFS is derived from the UNIX File System, the original BSD file system.Hierarchical File System (HFS)
The Veritas File System is an extent-based, intent logging file system from Symantec
Corporation.
Veritas File System (VxFS)
The CD file system enables you to read and write to compact disc media.Compact Disk File System
(CDFS)
AutoFS/Automounter mounts directories automatically when users or processes
request access to them. AutoFS also unmounts the directories automatically if they
remain idle for a specified period of time.
AutoFS
Network File System (NFS) provides transparent access to files on the network. An
NFS server makes a directory available to other hosts on the network by “sharing”
the directory.
Network File System (NFS)
The Cache File System (CacheFS) is a general purpose file system caching mechanism
that improves server performance and scalability by reducing server and network
load.
CacheFS
Veritas File System (VxFS)
Introduction
The Veritas File System (VxFS) is a high availability, high performance, commercial grade file
system that provides features such as transaction based journaling, fast recovery, extent-based
allocation, and online administrative operations, such as backup, resizing, and defragmentation
of the file system. It provides high performance and easy manageability required by
mission-critical applications, where high availability is critical. It increases the I/O performance
and provides structural integrity.
The Veritas File System version (VxFS ) is the vxfs file system for HP-UX 11i v3 release.
VxFS Features
VxFS supports the following features:
• Extent-Based Allocation
An extent is defined as one or more adjacent blocks of data within the file system. VxFS
allocates storage in groups of extents rather than a block at a time, thereby resulting in faster
read-write operations.
• Extent Attributes
Extent attributes are the extent allocation policies associated with a file. VxFS allocates disk
space to files in groups of one or more extents. VxFS enables applications to control extent
allocation.
The setext and getext commands enable the administrator to set or view extent attributes
associated with a file, as well as to preallocate space for a file.
• Fast File System Recovery
Most file systems rely on full structural verification by the fsck utility as the only means
to recover from a system failure. For large disk configurations, this involves a time-consuming
process of checking the entire structure, verifying that the file system is intact, and correcting
any inconsistencies.
18 Introduction