HP Serviceguard Storage Management Suite for VERITAS manual File Systems Supported on HP-UX 11i

RAID-5 (Striping with Parity)

Although both mirroring (RAID-1) and RAID-5 provide redundancy of data, they use different methods. Mirroring provides data redundancy by maintaining multiple complete copies of the data in a volume. Data being written to a mirrored volume is reflected in all copies. If a portion of the mirrored volume fails, the system continues to use the other copies of the data. RAID-5 provides data redundancy by using parity. Parity is a calculated value used to reconstruct data, after a failure. If a portion of a RAID-5 volume fails, the data that was on that portion of the failed volume can be recreated from the remaining data and parity information. It is also possible to mix concatenation and striping in the layout.

VxVM Interfaces

VxVM provides the following interfaces:

•Command-Line Interface

•Menu-driven vxdiskadm utility

•Veritas Enterprise Administrator

Command-Line Interface

As a superuser, you can administer and configure volumes and other VxVM objects using the supported vx* commands.

Menu-driven utility

The vxdiskadm utility provides an easy to use menu driven interface for common high-level operations on disks and disk groups.

Veritas Enterprise Administrator

The Veritas™ Enterprise Administrator (VEA) is the graphical user interface for administering disks, volumes, and file systems on local and remote machines.

File Systems Supported on HP-UX 11i v3

Table 2 discusses the file systems that are supported on HP-UX 11i v3.

Table 2 Supported File Systems on HP-UX 11i v 3

File System Type	Description
Hierarchical File System (HFS)	HFS is derived from the UNIX File System, the original BSD file system.
Veritas File System (VxFS)	The Veritas File System is an extent-based, intent logging file system from Symantec
	Corporation.
Compact Disk File System	The CD file system enables you to read and write to compact disc media.
(CDFS)
AutoFS	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.
Network File System (NFS)	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.
CacheFS	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.

File Systems Supported on HP-UX 11i v3 17