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HP 316095-B21 - StorageWorks Edge Switch 2/24 Service Manual Page 291

Edge switch 2/24 service manual.
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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
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 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 Edge Switch. The information is useful to maintenance personnel for
isolating port problems (particularly expansion port (E_Port) segmentation problems) and
repair verification. See also
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 Edge 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).
edge switch 2/24 service manual
Audit
Log;
Event
Log;
link incident
link
incident.
Hardware
Log;
Threshold Alert
Glossary
alerts.
Log.
Glossary–31

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