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G
GUI: Graphical User Interface.
H
high availability: A particular configuration which
shares resources between two CPU drawers, so
that if one CPU drawer fails, the other one takes the
control without interrupting any activity.
hot swapping: The operation of removing a faulty
hard disk drive and replacing it with a good one
without interrupting the system activity.
I
I2C: Inter Integrated Circuit.
ID: A number which uniquely identifies a device on
a bus.
IEC: International Electrotechnical Commission.
I/O: Input/Output.
ISA: Industry Standard Architecture (Bus).
J
JBOD: Just a Bunch Of Disks.
K
KBB: It is a card that provides three RS-232 lines
and one parallel line. It is also connected to the
KSB card by means of a dedicated flat cable.
KBR: A card dedicated to the connection of a PCI
expansion drawer.
KDD: A card installed in the PCI expansion drawer
and interconnecting all the expansion drawer
resources. It manages also the input and output
RS-485 connection between the CPU drawer and
the PCI expansion drawer.
KDK Complex: It is composed by the KDK card
and two flat cables connected to it. Its main
functionality is to define the hard disk drive
SCSI-ID.
Key Mode Switch: Key controlled switch which
controls system operation mode.
KHS: An optional card to be installed in presence
of a RAID configuration. It interfaces the RAID
controller card.
G-2
Setting Up the System
KP2: The back plane of a disk cage that connects
two hard disk drives with 1.6 inch form factor.
KP3: The back plane of a disk cage that connects
three hard disk drives with 1 inch form factor.
KPE: The planar hosting the PCI controllers in the
PCI expansion drawer. Up to two KPE planars can
be installed in each PCI expansion drawer.
KPL: See System Planar.
KPS: See Power Supply.
KSB: It is a card housing the BUMP logic. Also, it
holds two dedicated connectors which interconnect
the KSB card to the KBB card and to the KHS card,
if this is installed.
KXB: A card installed in the PCI expansion drawer,
dedicated to the connection to the CPU drawer.
L
LAN: Local Area Network.
LED: Light-Emitting Diode.
M
media and disk device areas: Areas which house
the media drives and the hard disk drives.
memory bank: The minimum quantity of memory
used by the system. It physically consists of four
memory DIMM's. See also DIMM and riser.
MFG: Manufacturing.
MP: MultiProcessor.
multimedia: Information presented through more
than one type of media. On computer systems, this
media includes sound, graphics, animation and
text.
multitasking: The ability to perform several tasks
simultaneously. Multitasking allows you to run
multiple applications at the same time and
exchange information among them.
N
NVRAM: Non Volatile Random Access Memory.
O
OF: See Open Firmware.
OP: See Operator Panel.
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