Instruction Manual

I/O modul e Input/Output modu le. 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 num ber por tion of the HSV controller termination code display
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 metho d of communication between the EMU and controller that utilizes
the Fibre Channel drive enclosure bus.
INFORMATION
condition
A drive enclosure EMU condition report that may require action. This condition
is for information only and does not indicate the failure of an element. All
condition reports have precedence over an INFORMATION condition.
initialization A process that prepares a storage system for use. Specifically, the system
binds controllers together as an operational pair and establishes p reliminary
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 a mbient temperature
interface A set of protocols used between components such as cables, c onnectors, 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 Kilob yte. A unit of measurement defining either storage or memory capacity.
1. For storage, a KB is a capacity 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 a nd associated devices that share
a com m on communications line and typically share the resourc es of a s ingle
processor or server within a small g eographic 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 Te rmination
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 elem ent.
indicator Light Emitting D iode. A semiconductor diode, used in an electronic display, that
emits light when a voltage is applied to it.
License Key A WWN-encoded sequence that is obtained from the license key fulfillment
website.
light emitt ing
diode
See indicator.
link A connection between ports 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 (VCS 3.110)
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