VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Prerelease 8 September 2005, 8:55am
526 VERITAS Storage Foundation for Oracle Administrator’s Guide
file system block
The fundamental minimum size of allocation in a file system.
fileset
A collection of files within a file system.
fixed extent size
An extent attribute associated with overriding the default allocation policy of the file system.
fragmentation
Storage of data in non-contiguous areas on disk. As files are updated, new data is stored in
available free space, which may not be contiguous. Fragmented files cause extra read/write head
movement, slowing disk accesses.
free space
An area of a disk under VERITAS Volume Manager control that is not allocated to any subdisk or
reserved for use by any other VxVM object.
gigabyte
Approximately one billion bytes. Also GB, Gbyte, G-byte.
HFS
High Performance File System. The HP-UX name for the file system derived from the 4.2 Berkeley
Fast File System.
high availability (HA)
The ability of a system to perform its function continuously (without significant interruption) for a
significantly longer period of time than the combined reliabilities of its individual components.
High availability is most often achieved through failure tolerance and inclusion of redundancy;
from redundant disk to systems, networks, and entire sites.
hot backup
The process of backing up a database that is online and in active use.
hot pluggable
To pull a component out of a system and plug in a new one while the power is still on and the unit
is still operating. Redundant systems can be designed to swap disk drives, circuit boards, power
supplies, CPUs, or virtually anything else that is duplexed within the computer. Also known as hot
swappable.