Compaq ProLiant Clusters HA/F100, Administrator'S Manual

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Glossary -3
Compaq Confidential – Need to Know Required
Writer: Bryan Hicks Project: Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide Comments: Final
Part Number: 380362-003 File Name: k-glossary.doc Last Saved On: 8/24/00 12:06 PM
Ethernet A standard network protocol that primarily operates
on a physical level, using network interface cards and
cabling to transmit data between computers. Transfer
rates are normally 1,000 or 10,000 megabits per
second.
Failback
The process of moving the operation of a previously
failed cluster group from the secondary cluster node
back to the primary node.
Failover
The process of moving the operation of a cluster
group from the primary node to the secondary node in
the same cluster.
Fault tolerance
A design concept that allows continued operation of a
computer entity when a fault (or failure) is
encountered. Tolerance is achieved primarily by
designing redundant elements into the entity.
Fibre Channel
Array
See Compaq StorageWorks RAID Array 4000/4100.
Fibre Channel
An IEEE standard for providing high-speed data
transfer among workstations, mainframes,
supercomputers, desktop computers, storage devices,
and display devices.
Fibre Channel
Host Adapter
See Compaq StorageWorks Fibre Channel Host Bus
Adapter/P.
See Also host bus adapter.
Fibre Channel
Host Controller
See Compaq StorageWorks Fibre Channel Host Bus
Adapter.
See Also host bus adapter.
Fibre Channel
array controller
See Compaq StorageWorks RA4000 Controller.
Heartbeat A signal transmitted between cluster nodes to indicate
each node’s operating state.
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).
Host
The central or controlling computer in a system of
computers connected by communications links.