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
Glossary
Active/active
A state in which each host bus adapter is processing
data when the cluster is operating normally.
Active/standby
A state in which one host bus adapter is processing
data and the other is in a booted, but inactive, state
when the cluster is operating normally. The standby
node does not execute its own clustered applications
and has no cluster groups to fail over to the active
node.
Arbitrated loop
A connection method in which two or more ports can
be interconnected, but only two ports at a time can
communicate.
Array controller
A hardware device that facilitates communications
between a host and one or more devices organized on
an array. Also called RA4000 controller.
Availability
A measure of how well a computer system can
continuously deliver services to its clients.
Availability is typically expressed as a percentage,
with 100 percent being the best possible rating.
Blink LEDs
The ability to light the drive tray LEDs on a particular
RA4000/4100.
Business-critical
Applications that are key to business success but not
significant enough to justify the high cost of a
traditional clustering solution. Their failure causes lost
revenue, decreased productivity, and customer
dissatisfaction.
Summary of Contents for ProLiant Clusters HA/F100
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