Compaq 112726-001 - ProLiant - 6500 Administrator's Manual page 220

4 Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide
Operating
A collection of low-level software modules that monitor critical
System
clustering hardware components and constantly transmit/receive
Dependent (OSD)
cluster state information to and from Oracle8i Parallel Server.
layer
Oracle8i Parallel
A software component that ships as an option of Oracle8i Enterprise
Server Option
Edition. The component is responsible for enabling parallel database
support. An additional license is required for Oracle8i Parallel
Server.
POST
Power-On Self-Test. A set of operations executed every time a
system is turned on to verify that components are present and
operating.
Raw Partition
A disk partition that does not contain file system formatting
information. An unformatted partition. Oracle Parallel Server requires
its database files to be stored on raw partitions.
RAID
Redundant Array of Inexpensive Disks. A method of using hard disk
drives in an array to provide data redundancy to increase system
reliability and performance. RAID is categorized into several levels.
Reliability
The continuous integrity of a system (server, storage, network, or
cluster).
Resource
A software or hardware entity upon which a client/server application
or service is dependent. As it pertains to the Compaq Parallel
Database Cluster, a cluster resource must have the ability to be
managed by the cluster and must reside on one of the cluster
nodes.
Scalability
The ability of a system (server, storage, network, or cluster) to grow
or expand in performance, throughput, or capacity.
Secure Path
The Compaq software that provides cluster nodes with continuous
data access to MA8000/EMA12000 Storage Subsystem disks drives.
Secure Path monitors each I/O path and automatically reroutes I/O to
the defined backup path should a failure occur in any component
along one path.
Service
A data set or operation set exported by application servers to their
clients.
Shared resource
A type of cluster organization in which some resources are
accessible to all systems in the cluster.