Glossary
hot-swap
To replace a failed or faulty component of a
computerized system while the system is run-
ning. See also hot-plug.
I
I/O
Input/Output. The communication between an
information processing system (such as a com-
puter or a Nexsan Storage System
RAID controller), and the outside world (either
an operator or another information processing
system). Inputs are the signals or data
received by the system, and outputs are the
signals or data sent from it.
IEC
The International Electrotechnical Com-
mission. Prepares and publishes international
standards for all electrical, electronic, and
related technologies.
interconnect service module
A module of the Nexsan E-Series storage
units that provides connectivity between all
modules in the chassis.
IP address
Internet Protocol address. A numerical label
assigned to each device (such as a computer,
printer, or Nexsan Storage System) on a com-
puter network that uses TCP/IP for com-
munication.
iSCSI
Internet Small Computer System Interface. A
transport protocol that provides for the SCSI
protocol to be carried over a TCP/IP network.
ISM
See Interconnect Service Module.
L
LAN
See local area network.
LED
Light Emitting Diode. LEDs are used for indic-
ator lights on the front and back of Nexsan Stor-
age Systems.
link module
A module of single-controller Nexsan
E18/E18V storage units that fits into a
RAID controller slot and provides connections
to the mid-plane.
local area network
A computer network that links devices within a
small geographic area, such as a building or
group of adjacent buildings.
M
Mb
Megabit. Approximately one million
(1,000,000) bits.
Mb/s
Megabits (Mb) per second. Used to describe
the speed of network data transmission.
P
PCIe
Peripheral Component Interconnect Express.
A computer expansion card standard designed
to replace the older Peripheral Component
Interconnect (PCI), PCI-eXtended (PCI-X), and
Accelerated Graphics Port (AGP) standards.
pod
See active drawer.
power supply unit
A module that regulates electrical power to
the components of Nexsan Storage Systems.
PSU
See power supply unit.
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Part Number: P0450141, Rev. B
Nexsan BEAST™ and E-Series™
