HP 6100 User Manual page 174

IDX A 2-digit decimal number portion of the HSV controller termination code display that defines one
of 32 locations in the Termination Code array that contains information about a specific event.
See also param and TC.
in-band The method of communication between the EMU and controller that utilizes the Fibre Channel
communication drive enclosure bus.
INFORMATION A drive enclosure EMU condition report that may require action. This condition is for information
condition 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 preliminary data structures on the disk array. Initialization
also sets up the first disk group, called the default disk group.
input/output See I/O module.
module
intake temperature See ambient temperature.
interface A set of protocols used between components such as cables, connectors, and signal levels.
J
JBOD Just a Bunch of Disks. A number of disks connected to one or more controllers.
L
indicator Light Emitting Diode. A semiconductor diode, used in an electronic display, that emits light when
a voltage is applied to it.
LAN Local area network. A group of computers and associated devices that share a common
communications line and typically share the resources of a single processor or server within a
small geographic area.
laser A device that amplifies 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 See LTEA.
Error Array
License Key A WWN-encoded sequence that is obtained from the license key fulfillment website.
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.
logon Also called login, it is a procedure whereby a user or network connection is identified as being
an authorized network user or participant.
loop See arbitrated loop.
loop ID Seven-bit values numbered contiguous from 0 to 126 decimal that represent the 127 valid AL_PA
values on a loop (not all 256 hexadecimal values are allowed as AL_PA values per Fibre Channel).
loop pair A Fibre Channel attachment between a controller and physical disk drives. Physical disk drives
connect to controllers through paired Fibre Channel arbitrated loops. There are two loop pairs,
designated loop pair 1 and loop pair 2. Each loop pair consists of two loops (called loop A and
loop B) that operate independently during normal operation, but provide mutual backup in case
one loop fails.
LTEA Last Termination Event Array. A two-digit HSV Controller number that identifies a specific event
that terminated an operation. Valid numbers range from 00 to 31.
LUN Logical Unit Number. A SCSI convention used to identify elements. The host sees a virtual disk
as a LUN. The LUN address a user assigns to a virtual disk for a particular host will be the LUN
at which that host will see the virtual disk.
174 Glossary