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2 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide Fibre Channel Fibre Channel Arbitrated Loop (FC-AL) Fibre Channel Fabric GBIC-SW module Heartbeat High availability Hot-pluggable Hot spare Interconnect Integrated Distributed Lock Manager An IEEE standard for providing high-speed data transfer among workstations, mainframes, supercomputers, desktop computers, storage devices, and display devices. A storage area network (SAN) topology that uses the Storage Hub or FC-AL Switch to connect each cluster node with the shared storage resources. In the PDC/O1000, each FC-AL is non-redundant because there is only one I/O path from each node to and from the RA4000/RA4100 Arrays. A storage area network (SAN) topology that uses the Fibre Channel SAN Switch to connect each cluster node with the shared storage resources. In the PDC/O1000, each Fibre Channel Fabric is non-redundant because there is only one I/O path from each node to and from the RA4000/RA4100 Arrays. Gigabit Interface Converter-Shortwave module. A module installed at both ends of a Fibre Channel cable. A signal transmitted between cluster nodes to indicate whether the nodes are operating. A term used to identify a computer system that can continuously deliver services to its clients 99.9 percent of the time (no more than 8.5 hours of downtime per year). A computer component that can be removed and replaced without powering down the system. A computer component that is powered on, not actively processing data, and awaiting a request to take over operation of a failed component. A physical connection between cluster nodes that transmits intra-cluster communication, also called the cluster heartbeat. The Compaq Parallel Database Cluster interconnect is dedicated to servicing requests only between cluster nodes. An Oracle software component that coordinates database locks among cluster nodes. Sometimes abbreviated as IDLM.

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2
Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Fibre Channel
An IEEE standard for providing high-speed data transfer among
workstations, mainframes, supercomputers, desktop computers,
storage devices, and display devices.
Fibre Channel
Arbitrated Loop
(FC-AL)
A storage area network (SAN) topology that uses the Storage Hub or
FC-AL Switch to connect each cluster node with the shared storage
resources. In the PDC/O1000, each FC-AL is non-redundant because
there is only one I/O path from each node to and from the
RA4000/RA4100 Arrays.
Fibre Channel
Fabric
A storage area network (SAN) topology that uses the Fibre Channel
SAN Switch to connect each cluster node with the shared storage
resources. In the PDC/O1000, each Fibre Channel Fabric is
non-redundant because there is only one I/O path from each node to
and from the RA4000/RA4100 Arrays.
GBIC-SW module
Gigabit Interface Converter-Shortwave module. A module installed at
both ends of a Fibre Channel cable.
Heartbeat
A signal transmitted between cluster nodes to indicate whether the
nodes are operating.
High availability
A term used to identify a computer system that can continuously
deliver services to its clients 99.9 percent of the time (no more than
8.5 hours of downtime per year).
Hot-pluggable
A computer component that can be removed and replaced without
powering down the system.
Hot spare
A computer component that is powered on, not actively processing
data, and awaiting a request to take over operation of a failed
component.
Interconnect
A physical connection between cluster nodes that transmits
intra-cluster communication, also called the cluster heartbeat.
The Compaq Parallel Database Cluster interconnect is dedicated
to servicing requests only between cluster nodes.
Integrated
Distributed Lock
Manager
An Oracle software component that coordinates database locks
among cluster nodes. Sometimes abbreviated as IDLM.