HP AA-RS2JA-TE User Manual Page 329

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edge switch 2/16 service manual Glossary–31
Glossary
light-emitting diode
LED. A semiconductor chip that emits visible or infrared light when electricity passes through
it. LEDs are used on switch or director field-replaceable units (FRUs) and the front bezel to
provide visual indications of hardware status or malfunctions.
LIN
See link incident.
link
Physical connection between two devices on a switched fabric. A link consists of two
conductors, one used for sending and the other for receiving, thereby providing a duplex
communication path.
link incident
LIN. Interruption to link due to loss of light or other causes. See also link incident alerts.
link incident alerts
A user notification, such as a graphic symbol in the Product Manager application Hardware
View that indicates that a link incident has occurred. See also link incident.
Link Incident Log
Director or switch Link Incident Log. Log displayed through the Product Manager application
that provides a history of Fibre Channel link incidents (with associated port numbers) for an
individual director or switch. The information is useful to maintenance personnel for isolating
port problems (particularly expansion port (E_Port) segmentation problems) and repair
verification. See also Audit Log; Event Log; Hardware Log; Threshold Alert Log.
LMA
See loader/monitor area.
load balancing
Ability to evenly distribute traffic over multiple interswitch links within a fabric. Load
balancing on Hewlett Packard directors and switches takes place automatically.
loader/monitor area
LMA. Code that resides in the loader/monitor area of the control processor (CTP) card.
Among other functions, LMA code provides I/O functions available through the maintenance
port, operator panel, server interface, terminal window command functions, power up
diagnostics, field-replaceable unit (FRU) power-on hours update, and data read/write control,
and LMA code/licensed internal code (LIC) download functions (D).
local
Synonym for channel-attached.
logical partition
LPAR. A processor hardware subset defined to support the operation of a system control
program, and can be used without affecting any of the applications in another partition (D).
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