Manual

I/O module Input/Output module. The enclosure element that is the Fibre Channel drive
enclosure interface to the host or controller. I/O modules are bus speed specific,
either 1 Gb or 2 Gb.
IDX A 2-digit decimal number portion of the HSV c ontroller termination co de d isplay
that defines one of 32 locations in the Termination Code array that contains
information about a specificevent.
See also param and TC.
in-band communi-
cation
The method of communication between the EMU and controller that utilizes
the Fibre Ch annel drive enclosure bus.
INFORMATION
condition
A drive enclosure EM U condition report that may require action. This condition
is for information only and do es not indicate the failure of an element. All
condition repor ts have precedence over an INFORMATION co ndition.
initialization A process that prepares a storage system for use. Specifically, the system
binds c ontrollers together as an operational pair a nd establishes preliminary
data structures on the disk array. Initialization also sets up the first disk group,
called the default disk group.
input/output mod-
ule
See I/O module.
intake tempera-
ture
See ambient temperature
interface A set of protocols used between components such as cables, connectors, and
signal levels.
JBOD Just a Bunch of D
isks. A num b er of disks connected to one or more controllers.
K Kilo. A scientific notation denoting a multiplier of one thousand (1,000).
KB Kilobyte. A unit of measurement defining either storage or m emory capacity.
1. For storage, a KB is a c apacity of 1,000 (10
3
) bytes of data.
2. For memory, a KB is a capacity of 1,024 (2
10
) bytes of data.
LAN Local area network. A group of computers and associated devices tha t share
a common com munications line and t ypically share the resources of a s ingle
processor or server within a small geographic area.
laser Adevicethatamplifies light waves and concentrates them in a narrow, very
intense beam.
Last Fault View An HSV Controller display defining the last reported fault condition.
Last Termination
Error Array
See LTEA.
LCD Liquid Crystal Display. The indicator on a panel that is associated with an
element. The LCD is usually located on the front of an element.
indicator Light Emitting Diode. A semiconductor diode, used in an electronic display, that
emits light when a voltage is applied to it.
License Key A WWN-encoded sequ ence that is obtained from the license key fulfillment
Web site.
light e mitting
diode
See indicator.
link A connection between por ts on Fibre Channel devices. The link is a full duplex
connection to a fabric or a simplex connection between loop devices.
Enterprise Virtual Array 3000/5000 user guide
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