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Glossary
Ethernet
A local area network (LAN) protocol
developed by Xerox Corporation. The initial
data transfer rate specification was 3 Mbps.
With Ethernet 2.0 established by Xerox, Intel,
and DEC, the specification for transfer rate was
upgraded to 10 Mbps. In order to comply with
ISO standards, the Ethernet specification has
now become the basis for the IEEE802.3
standard.
EUC
Extended UNIX Code. Character code scheme
that is used in UNIX.
FastEthernet
An Ethernet that achieves 100 Mbps data
transfer rate.
HA (High Availability)
High availability feature ensures the
continuation of system operation in the event of
a hardware failure and enables replacement of
failed components without interrupting
operation.
Hot swapping
Replacement of a faulty component in the
system with a non-defective component while
the system is operating (OS is running).
Interleave
A control method in the main storage unit that
improves effective speed of main storage
access. By splitting main storage into several
parts (way), independent access to alternative
sections is enabled.
MAC address
MAC (Media Access Control). A hardware
address that is uniquely assigned to the network
interface card (NIC), for each port of network
interface devices, switches, or routers on the
motherboard.
NTP
Network Time Protocol. A time information
protocol that is commonly applied in the
Internet. Accurate time information is
generated, taking into consideration transfer
rates and load variations along the line.
PCI
Peripheral Component Interface. One of IEEE
standard interfaces.
RAID
Redundant Arrays of Inexpensive Disks.
RAID enables configuration of highly reliable
external storage unit by implementing
redundancy algorithms, and by deploying
multiple internal hard disk drives (HDD) in
parallel to achieve high-speed read/write.
Depending on disk configuration and data
check methods, RAID is classified into six
levels as RAID-0 to RAID-5.
RCI
Remote Cabinet Interface. A power/system
control interface that is used to connect all units
such as processing units and Expansion File
Units, and to process power interlocking, alarm
notification / recognition, and other processes.
Redundant configuration
The provision of multiple interchangeable
components to perform a single function in
order to avoid a single point of failure.
RS232C
A standard interface that is used to connect
computers, or computers and peripheral
devices for data exchange. This interface is
approved by Electronic Industries Association
(EIA), and is adopted in most PCs as a general
input/output serial interface.
