Compaq ProLiant 6400R Compaq Parallel Database Cluster Model PDC/O1000 for Ora - Page 168
Distributed Lock, Arbitrated Loop
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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.