Fujitsu PRIMEPOWER 800, Руководство пользователя

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C120-E093-04EN 103
Glossary
100Base-TX
An IEEE standard. Applicable cable types are
Unshielded Twisted-Pair (UTP) and Shielded
Twisted-Pair (STP). Applicable connector type is
RJ45. Allows bandwidth of 100 Mbps, and the
maximum segment length is 100 m (328 ft).
10Base-T
An IEEE standard. Applicable cable type is
Unshielded Twisted-Pair (UTP), and the connector
type is RJ45. Allows bandwidth of 10 Mbps, and the
maximum segment length is 100 m (328 ft).
Auto termination
Performs automatic termination setting on the adapter
that had been entered on the user side. It is recessary
to ensure high reliability on SCSI buses.
Cache
A buffering memory unit whose capacity is smaller
and the speed is higher than the main memory unit.
The cahe memory retains copies of the commands and
data that will possibly be used later. The part being
copied is distinguished from the commands and data
the processing unit obtains from the main storage unit.
Configuration conflict
Indicates a combination that may not operate
correctly as a system.
DAT
Digital Audio Tape. A kind of magnetic tape
originally designed for audio format, now also used
by computers to back up data. The physical
specification of DAT for audio also applies to the
DAT for computer. However, their quality and
performance are different.
DIMM
Dual Inline Memory Module. Its attribute is memory
module package. Depending on the pin numbers,
DIMM is classified into three types, such as 72, 144,
and 168.
Disk mirroring
With two hard disks drive, reading is performed
against one disk, and writing is performed against
both disks. When an error occurs and reading from
one disk is disabled, the other is used for reading.
Dynamic Reconfiguration (DR)
A function for the partition with multi System Boards
to replace hardware resources, such as processors,
memory, and PCI cards, without system interruption.
Replacement is available on a System Board basis
which serves as a component of the partition. On the
main unit, combination of Dynamic Reconfiguration
function, hot swap feature, and partitioning of main
unit enables hot swap of faulty component on the
System Board, hot add on System Boards, and
shifting System Boards over partitions.
ECC
Error Checking and Correction. Examines and
corrects errors based on the error correcting code.
Generally, diagnosis can be performed in wider range
than corrections.
Ethernet
A local area network (LAN) protocol developed by
Xerox corporation. By the initial specifications, the
data transfer rate was 3 Mbps. On the Ethernet2.0
specification basis, that was established by Xerox,
Intel, and DEC, transfer rate was upgraded to 10
Mbps. Later, in order to comply with the ISO protocol
hierarchy, the Ethernet specification has become the
basis for the IEEE802.3 standard, which is in use
today.
EUC
Extended UNIX Code. Character code scheme that is
used in UNIX.
FastEthernet
An Ethernet that achieves 100 Mbps data transfer rate.