Nexsan BEAST BT60, Руководство по снятию и замене, Страница: 52 / 57

Glossary
A
antistatic wrist strap
An anti-static device used to prevent elec-
trostatic discharge (ESD) by safely grounding
a person working on electronic equipment.
Also called an ESD strap or a grounding brace-
let.
array
A linked group of one or more physical, inde-
pendent hard disk drives. See also RAID.
B
bit
The smallest unit of digital data, representing
a 0 or a 1. Abbreviated “b”.
byte
A unit of data that is 8 bits long. Often used for
alphanumeric characters. Abbreviated “B”.
C
cache
Reserved areas of memory that are used to
speed up instruction execution, data retrieval,
and data updating. In Nexsan Storage Sys-
tems, a memory unit in the RAID controller that
temporarily holds user data.
D
daisy-chain
The attachment of hardware to a computing
system by connecting each component to
another similar component rather than directly
to the computing system that uses the com-
ponent. Only the last component in the chain
directly connects to the computing system. For
example, up to two Nexsan E-Series expan-
sion units can be daisy-chained to the back of
one Nexsan E-Series main storage unit.
E
electrostatic discharge
The sudden and momentary electric current
that flows between two objects at different elec-
trical 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 com-
puter systems to form a local area network
(LAN), with protocols to control the passing of
Nexsan BEAST BT60 and BT60X
FRU Removal and Replacement Guide Nexsan
www.nexsan.com
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