Glossary
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Nexsan
www.nexsan.com
Nexsan E60™/Nexsan E48™
FRU Removal and Replacement Guide
the active drawer status LEDs, the drive drawer
lock, and the front drive drawer fan.
drive drawer
See active drawer.
E
E-Series
The series of Nexsan units that includes the
Nexsan E18, E48, and E60 storage units (and
their V, VT and P variants), the Nexsan E32V,
the Nexsan E18X, E48X, and E60X expansion
units (and their XV variants), and the Nexsan
E32XV. Nexsan E-Series units feature Active
Drawer Technology, Anti-Vibration Design, and
CoolDrive Technology.
electrostatic discharge
The sudden and momentary electric current that
flows between two objects at different electrical
potentials caused by direct contact or induced by
an electrostatic field. Potentially harmful to
electronic components.
ESD
See electrostatic discharge.
ESD strap
See anti-static wrist strap.
Ethernet
A system for connecting a number of computer
systems to form a local area network (LAN), with
protocols to control the passing of information
and to avoid simultaneous transmission by two
or more systems. Supports data transfer rates of
10, 100, 1,000, and 10,000 megabits per second
(Mb/s). 10, 100, and 1,000Mb/s networks are
often referred to as 10BASE-T, 100BASE-T, and
1000BASE-T, respectively. 10,000Mb/s
networks are usually referred to as 10Gb
Ethernet or 10GbE.
Expansion Controller
A module of Nexsan E-Series expansion units
(Nexsan E18X/XV, E32XV, E48X/XV, and
E60X/XV) that connects via SAS to a Nexsan
storage unit’s RAID controller.
F
FC port
See Fiber Channel port.
FCC
The Federal Communications Commission; the
United States federal agency that regulates
electromagnetic emissions.
Fiber Channel
A gigabit (Gb) speed network technology
primarily used for storage networking and the
current standard connection type for storage area
networks (SANs). Despite its name, Fiber
Channel signaling can run on both twisted-pair
copper wire and fiber-optic cables.
Fiber Channel port
Any entity that actively communicates over a
Fiber Channel network. Usually implemented in
a device such as disk storage or a Fiber Channel
switch. Depending on the system, the Fiber
Channel ports on Nexsan storage units can
support 2Gb/s, 4Gb/s, 8Gb/s, or 16Gb/s
connections.
Fiber Channel switch
A network switch compatible with the Fiber
Channel protocol. Allows the creation of a Fiber
Channel network, which is currently the core
component of most storage area networks
(SANs).
G
Gb
Gigabit. Approximately one billion
(1,000,000,000) bits.
GB
Gigabyte. Approximately one billion
(1,000,000,000) bytes. Used to describe the
storage capacity of hard disk drives. A gigabyte
is usually computed as 109 (1,000,000,000)
bytes, but can also be computed as 230
(1,073,741,824) bytes (often called a “binary
gigabyte” and abbreviated GiB).