R

RANDOM ACCESS MEMORY (RAM)

Memorydesignedsothatanystoragelocationcanbeaccessedrandomly,directlyand individually.Thisiscontrastedtosequentialaccessdevicessuchastapedrives.

READ

Toaccessastoragelocationandobtainpreviouslyrecordeddata.Tosensethepresence offluxreversalsonmagneticmedia.Usuallyimplementedsuchthatadynamicflux amplitudewillcauseaproportionalelectricaloutputfromthetransducer.

READ GATE SIGNAL

Adigitalinputsignalwhichcausesthedrivecircuitrytorecoverdata.

READ ONLY MEMORY (ROM)

Aformofmemorywhichcannotbechangedinformaloperationalmodes.Many differenttypesareavailable.RAMisusedforpermanentinformationstorage. ComputercontrolprogramsareoftenstoredinROMapplications.

READ/WRITE HEAD

Therecordingelementwhichwritesdatatothemagneticmediaandreadsrecorded datafromthemedia.

RE-CALIBRATE

Theactionofmovingtheheadofadiskdrivetocylinderzero.

RECOVERABLE ERROR

Areaderror,transientorotherwise,fallingwithinthecapabilityofanECC mechanismtocorrect,orabletoovercomebyrereadingthedatainquestion.

ROTATIONAL LATENCY

Theamountofdelayinobtaininginformationfromadiskdriveattributabletothe rotationofthedisk.

RUN-LENGTH LIMITED

Anencodingprocessthatrepositionsdatabitsandlimitsthelengthofzerobitsinorder tocompressinformationbeingstoredondisks.

RUN-LENGTH LIMITED ENCODING

Arecordingcode.Sometimesmeanttodenote“2.7RLL”whichcansignify1.5times thebitsasMFM,giventhesamenumberoffluxreversalsinagivenlinealdistance.

S

SECTOR

Alogicalsegmentofinformationonaparticulartrack.Thesmallestaddressableunitof storageonadisk.Tracksaremadeofsectors.

SECTOR PULSE SIGNAL

Adigitalsignalpulsepresentinhardsectoreddriveswhichindicatesthebeginningofa sector.Embeddedservopatternorotherprerecordedinformationmaybepresenton thediskwhensectorisactive.

SEEK

Arandomaccessoperationbythediskdrive.Theactofmovingasetofread/write headssothatoneofthemisoverthedesiredcylinder.Theactuatororpositionermoves theheadstothecylindercontainingthedesiredtrackandsector.

SEEK COMPLETE SIGNAL

Adigitalsignallevelwhichindicatesthatthepositionerisnotmovingandislocated overacylinderoroffsetposition.

SEEK TIME

Theamountoftimebetweenwhenasteppulseorseekcommandisissueduntilthe headsettlesontothedesiredcylinder.Sometimesismeasuredwithoutsettlingtimes.

SEQUENTIAL ACCESS

Thewritingorreadingofdatainasequentialordersuchasreadingdatablocksstored oneaftertheotheronmagnetictape.Thisiscontrastedtorandomaccessof information.

SERVO BURST

Amomentaryservopatternusedinembeddedservocontrolsystemsusuallypositioned betweensectorsorattheendofatrack.

SERVO CONTROL

Atechniquebywhichthespeedorpositionofamovingdeviceisforcedinto conformitywithadesiredorstandardspeedorposition.

GLOSSARY

SERVO HEAD

Amagneticheaddesignedspecificallyforaccuratelyreadingservodata.

SERVO PATTERN

Areadbacksignalthatindicatesthepositionofaheadrelativetoatrack.

SERVO SURFACE

Arecordingsurfaceinamulti-surfacediskdrivethatonlycontainscontrolinformation whichprovidestiming,headposition,andtrack-followinginformationforthedata surfaces.

SERVO SYSTEM

Anautomaticsystemformaintainingtheread/writeheadontrack;canbeeither“open loop,”“quasi-closedloop,”or“closedloop.”

SERVO TRACK

Atrackonaservosurface.Theprerecordedreferencetrackonthededicatedservo surfaceofadiskdrive.Alldatatrackpositionsarecomparedtotheircorresponding servotrack todetermine“offtrack”/”ontrack”position.

SETTLING TIME

Thetimeittakesaheadtostopvibrating,withinspecifiedlimits,afteritreachesthe desiredcylinder.

SILICON Semiconductormaterialgenerallyusedtomanufacturemicroprocessorsandother integratedcircuitchips.

SMALL COMPUTER SYSTEM INTERFACE (SCSI)

Anintelligentinterfacethatincorporatescontrollerfunctionsdirectlyintothedrive.

S.M.A.R.T. CAPABILITY Self-MonitoringAnalysisandReportingTechnology.Predictionofdevice degradationand/orfaults.

SOFT ERROR

Adataerrorwhichcanbeovercomebyrereadingthedataorrepositioningthehead.

SOFT SECTORED

Atechniquewherethecontrollerdeterminesthebeginningofasectorbythereading offormatinformationfromthedisk.Thisiscontrastedtohardsectoringwherea digitalsignalindicatesthebeginningofasectoronatrack.

SOFTWARE

Applicationsprograms,operatingsystems,andotherprograms(asopposedto hardware).

SPINDLE

Therotatinghubstructuretowhichthedisksareattached.

SPINDLE MOTOR

Themotorthatrotatesthespindleandthereforethedisks.

SPUTTERED MEDIA

Magneticdiskortapethathasthemagneticlayerdepositedbysputteringmeans.

STEPPER MOTOR

Amotorthathasknowndetentpositionswheretherotorwillstopwiththeproper controlinsomecases.Thedigitallycontrolledmotormovestheheadpositionerfrom tracktotrackinsmall,step-likemotions.

STORAGE CAPACITY

Theamountofdatathatcanbestoredinamemorylocation,usuallyspecifiedin kilobytesformainmemoryandfloppydrivesandmegabytesformassstoragedevices.

STORAGE DENSITY

Usuallyreferstorecordingdensity(BPI,TPI,oracombinationofthetwo.)

STORAGE LOCATION

Amemorylocation,identifiedbyanaddresswhereinformationmaybereador written.

STROBE OFFSET SIGNAL

AgroupofdigitalinputsignallevelswhichcausethereadPLLand/ordatadecoderto shiftthedecodingwindowsbyfractionalamounts.Oftenearly/latearemodifiedwhen twosignalsareused.

GL – 5

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Maxtor 4320 manual Read Gate Signal

4320 specifications

The Maxtor 4320 is a notable entry in the realm of hard disk drives, widely recognized for its reliability and performance in data storage. Released in the early 2000s, it quickly gained traction among both consumers and professionals looking for efficient solutions for their data management needs.

At the core of the Maxtor 4320 is its impressive storage capacity. With a capacity of 20GB, it was considered substantial at the time, making it ideal for storing a variety of files, from documents to multimedia content. This drive provided users with ample space to expand their digital footprint without the constant worry of running out of space.

One of the standout features of the Maxtor 4320 is its data transfer rate. Operating at a speed of 5400 RPM, it offered a balanced performance that suited casual users and most business applications. The drive utilized an IDE interface, ensuring compatibility with a wide range of motherboards and systems, allowing for easy integration into both desktop and laptop computers.

The Maxtor 4320 is characterized by its durability. Engineered with robust materials and a well-designed casing, it was built to withstand regular use. This durability became a significant selling point, as data integrity and safety are paramount in any storage solution. Users could rely on the Maxtor 4320 to protect their important data against the wear and tear associated with daily operations.

In terms of technologies, the Maxtor 4320 featured advanced error correction algorithms, which ensured that data retrieval was not only fast but also reliable. This was particularly important at a time when data integrity was becoming increasingly crucial for personal and corporate users alike.

Additionally, the drive's low power consumption was a key consideration for eco-conscious consumers. It allowed for extended use without excessively draining power, contributing to lower energy bills and a smaller carbon footprint. This feature made the Maxtor 4320 an attractive option for users looking to balance performance with energy efficiency.

In conclusion, the Maxtor 4320 combined reliability, performance, and durability to become a popular choice in the hard disk drive market of the early 2000s. Its large storage capacity, reasonable speed, and energy efficiency catered to a wide range of users, from home consumers to small businesses. The legacy of the Maxtor 4320 continues to influence current storage solutions as it laid the groundwork for advancements in hard disk technology.