VERITAS Storage Foundation 4.1 Oracle Administrator's Guide

Glossary 525
Prerelease 8 September 2005, 8:55am
disk name
A VERITAS Volume Manager logical or administrative name chosen for the disk, such as
disk03. The term disk media name is also used to refer to the disk name.
DMP
See “Dynamic Multipathing.”
DSS
See “Decision Support Systems.”
Dynamic Multipathing
Dynamic Multipathing (DMP) is a VERITAS Volume Manager feature that allows the use of
multiple paths to the same storage device for load balancing and redundancy.
error handling
Routines in a program that respond to errors. The measurement of quality in error handling is based
on how the system informs the user of such conditions and what alternatives it provides for dealing
with them.
evacuate
Moving subdisks from the source disks to target disks.
extent
A logical database attribute that defines a group of contiguous file system data blocks that are
treated as a unit. An extent is defined by a starting block and a length.
extent attributes
The extent allocation policies associated with a file and/or file system. For example, see
“address-length pair.”
failover
The act of moving a service from a failure state back to a running/available state. Services are
generally applications running on machines and failover is the process of restarting these
applications on a second system when the first has suffered a failure.
file system
A collection of files organized together into a structure. File systems are based on a hierarchical
structure consisting of directories and files.