Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

Agent A process that starts, stops, and monitors all configured resources of a type, and
reports their status to VCS.
Authentication Broker The Veritas Security Services component that serves, one level beneath the root
broker, as an intermediate registration authority and a certification authority.
The authentication broker can authenticate clients, such as users or services, and
grant them a certificate that will become part of the Veritas credential. An
authentication broker cannot, however, authenticate other brokers. That task
must be performed by the root broker.
Cluster A cluster is one or more computers that are linked together for the purpose of
multiprocessing and high availability. The term is used synonymously with VCS
cluster, meaning one or more computers that are part of the same GAB
membership.
CVM (cluster volume
manager)
The cluster functionality of Veritas Volume Manager.
Disaster Recovery Administrators with clusters in physically disparate areas can set the policy for
migrating applications from one location to another if clusters in one geographic
area become unavailable due to an unforeseen event. Disaster recovery requires
heartbeating and replication.
disk array A collection of disks logically arranged into an object. Arrays tend to provide
benefits such as redundancy or improved performance.
DMP (Dynamic
Multi-Pathing)
A feature designed to provide greater reliability and performance by using path
failover and load balancing for multiported disk arrays connected to host systems
through multiple paths. DMP detects the various paths to a disk using a mechanism
that is specific to each supported array type. DMP can also differentiate between
different enclosures of a supported array type that are connected to the same
host system.
DST (Dynamic Storage
Tiering)
A feature with which administrators of multi-volume VxFS file systems can manage
the placement of files on individual volumes in a volume set by defining placement
policies that control both initial file location and the circumstances under which
existing files are relocated. These placement policies cause the files to which they
apply to be created and extended on specific subsets of a file system’s volume set,
known as placement classes. The files are relocated to volumes in other placement
Glossary