HP StorageWorks 2/16 User Manual page 178

Glossary
link incident alerts
A user notification, such as a graphic symbol in the hardware view that indicates that a link
incident has occurred.
load balancing
Ability to evenly distribute traffic over multiple interswitch links within a fabric. Load
balancing on HP switches takes place automatically.
log
A record, as of the performance of a machine or the progress of an undertaking.
logical port address
The port numbering system for a switch with the FICON Management Server active.
logical unit number
Also known as LUN. In Fibre Channel addressing, a logical unit number is a number assigned
to a storage device which, in combination with the storage device's node port's world-wide
name, represents a unique identifier for a logical device on a storage area network.
loopback plug
In a fiber optic environment, a type of duplex connector used to wrap the optical output signal
of a device directly to the optical input.
loopback test
Test that checks attachment or control unit circuitry, without checking the mechanism itself, by
returning the output of the mechanism as input.
LUN
See logical unit number.
MAC address
See Media Access Control address.
maintenance port
Connector on the switch operator panel where a PC running an ASCII terminal emulator can
be attached or dial-up connection made for specialized maintenance support.
managed product
Hardware product that can be managed with the HAFM Product Manager. For example, the hp
StorageWorks edge switch 2/16 (edge switch 2/16) and hp StorageWorks edge switch 2/32
(edge switch 2/32) switches are managed products. See also device.
Glossary–14 edge switch 2/16 product manager user guide