Dell TL2000 Bedienungsanleitung PDF herunterladen (Seite 252)

ESD. Electrostatic discharge.

ESP. The Encapsulating Security Payload (ESP)

protocol provides origin authenticity, integrity, and

confidentiality protection of a packet. ESP also supports

encryption-only and authentication-only configurations,

but using encryption without authentication is strongly

discouraged because it is insecure.

fault symptom code (FSC). A hexadecimal code

generated by the drive or the control unit microcode in

response to a detected subsystem error.

FCC. Federal communications commission.

fiducial. A target used for teaching a physical location

to a robot.

field replaceable unit (FRU). An assembly that is

replaced in its entirety when any one of its components

fails.

file. A named set of records stored or processed as a

unit. Also referred to as a dataset.

file protection. The processes and procedures

established in an information system that are designed

to inhibit unauthorized access to, contamination of, or

deletion of a file.

file transfer protocol (FTP). In the Internet suite of

protocols, an application layer protocol that uses TCP

and Telnet services to transfer bulk-data files between

machines or hosts.

firmware. Proprietary code that is usually delivered as

microcode as part of an operating system. Firmware is

more efficient than software loaded from an alterable

medium and more adaptable to change than pure

hardware circuitry. An example of firmware is the Basic

Input/Output System (BIOS) in read-only memory

(ROM) on a PC motherboard.

FLASH EEPROM. An electrically erasable

programmable read-only memory (EEPROM) that can

be updated.

FMR. Field microcode replacement.

format. The arrangement or layout of data on a data

medium.

formatter. Part of a magnetic tape subsystem that

performs data conversion, speed matching, encoding,

first level error recovery, and interfaces to one or more

tape drives.

FP. File protect.

frayed. Damaged as if by an abrasive substance.

FRU. Field replaceable unit.

FSC. Fault symptom code.

FSI. Fault symptom index.

functional microcode. Microcode that is resident in

the machine during normal customer operation.

g. Gram.

GB. gigabyte.

GBIC. Gigabit Interface Converter.

Gbi. gigabit

gigabit (Gbit). 1 000 000 000 bits.

gigabyte (GB). 1 000 000 000 bytes.

Gigabit Interface Converter (GBIC). Converts copper

interface to optic interface.

gnd. Ground.

hertz (Hz). Unit of frequency. One hertz equals one

cycle per second.

hex. Hexadecimal.

High Voltage Differential (HVD). A logic signaling

system that enables data communication between a

supported host and the library. HVD signaling uses a

paired plus and minus signal level to reduce the effects

of noise on the SCSI bus. Any noise injected into the

signal is present in both a plus and minus state, and is

thereby canceled. Synonymous with differential.

HVD. SCSI Bus High Voltage Differential

Hz. Hertz (cycles per second).

ID. Identifier.

identifier (ID). (1) In programming languages, a

lexical unit that names a language object; for example,

the names of variables, arrays, records, labels, or

procedures. An identifier usually consists of a letter

optionally followed by letters, digits, or other

characters. (2) One or more characters used to identify

or name data element and possibly to indicate certain

properties of that data element. (3) A sequence of bits

or characters that identifies a program, device, or

system to another program, device, or system.

H-4 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide

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