StorCentric Nexsan E48X, Руководство по снятию и замене

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Glossary
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.
CoolDrive Technology
Nexsan’s proprietary active drawer cooling
system, which uses front- and rear-mounted
fans to provide air intake and exhaust through
the drawer. Air flows from the front of the
drawer to the back through airflow channels
located between the drive pairs. Either fan can
fail; air is still supplied to the drawer by the
alternate fan.
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 Storage Expan-
sions can be daisy-chained to the back of one
Nexsan Storage System.
drawer front assembly
In Nexsan E60 and E48 Storage Systems
(and their V, VT and P variants), the assembly
that houses 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 Storage Systems that
includes the Nexsan E18, E48, and E60 Stor-
age Systems (and their V, VT and P variants),
the Nexsan E32V, the Nexsan E18X, E48X,
and E60X expansions (and their V variants),
and the Nexsan E32V. Nexsan E-Series Stor-
age Systems feature Active Drawer Tech-
nology, Anti-Vibration Design, and CoolDrive
Technology.
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
information and to avoid simultaneous trans-
mission 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 System’s RAID controller.
28 Part Number: P0450141, Rev. B
www.nexsan.com
Nexsan BEAST™ and E-Series™