Maxtor 6800 manual Gigabyte GB

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FILE ALLOCATION TABLE (FAT)

Allocatesspaceonthediskforfiles,oneclusteratatime;locksoutunusableclusters; identifiesunused(free)area;andlistsafile’slocation.WithtwoFAT’spresent,the secondcopyensuresconsistencyandprotectsagainstlossofdataifoneofthesectorson thefirstFATisdamaged.

FLUX CHANGES PER INCH

Synonymouswithfrpi(fluxreversalsperinch).OnlyinMFMrecordingdoes1fci equal1bpi(bitperinch).Inrun-length-limitedencodingschemes,generally1fci equals1.5bpi.

FORMAT

Inadiskdrive,thearrangementofdataonastoragemedia.Astandard5.25-inchdisk formatconsistsof17,26,or36sectorspertrack,and512bytesofdatapersector,plus identification,errorcorrection,andotherbytesnecessaryforaccessingand synchronizingdata.

FORMATTED CAPACITY

Theactualcapacityavailabletostoredatainamassstoragedevice.Theformatted capacityisthegrosscapacity,lessthecapacitytakenupbytheoverheaddatausedin formattingthesectors.

FREQUENCY MODULATION

Arecordingcode.Afluxreversalatthebeginningofacelltimerepresentsclockbit;a “1”bitisafluxreversalatthecenterofthecelltime,anda“0”bitisanabsenceofa fluxreversal.

FREQUENCY RESPONSE

Ameasureofhoweffectivelyacircuitordevicetransmitsthedifferentfrequencies appliedtoit.Indiskandtapedrivesthisreferstotheread/writechannel.Indisk drives,itcanalsorefertothedynamicmechanicalcharacteristicsofapositioning system.

G

GIGABYTE (GB)

Onebillionbytes(onethousandmegabytes)or109.

H

HARD ERROR

Anerrorthatisnotabletobeovercomebyrepeatedreadingsandrepositioningmeans.

HARD SECTORED

Atechniquewhereadigitalsignalindicatesthebeginningofasectoronatrack.Thisis contrastedtosoftsectoring,wherethecontrollerdeterminesthebeginningofasector bythereadingofformatinformationfromthedisk.

HEAD

Theelectromagneticdevicethatwrite(records),reads(playsback),anderasesdataona magneticmedia.Itcontainsareadcore(s)and/orawritecore(s)and/orerasecore(s) whichis/areusedtoproduceorreceivemagneticflux.Sometimesthetermisall inclusivetomeanthecarriageassemblywhichincludesthesliderandflexure.

HEAD CRASH

Theinadvertenttouchingofadiskbyaheadflyingoverthedisk(maydestroya portionofthemediaand/orthehead).

HEAD DISK ASSEMBLY (HDA)

Themechanicalportionofarigid,fixeddiskdrive.Itusuallyincludesdisks,heads, spindlemotor,andactuator.

HEAD LOADING ZONE

Thenon-dataareaonthedisksetasideforthecontrolledtakeoffandlandingofthe Winchesterheadswhenthedriveisturnedonandoff.Dedicatedannulusoneachdisk surfaceinwhichheadsareloaded,unloaded,orflyingheightisestablished.Head-disk contactmayoccurinsomeinstances;nodataisrecordedinthisarea.

HEAD POSITIONER

Alsoknownasactuator,amechanismthatmovesthearmsthatcarryread/writeheads tothecylinderbeingaccessed.

I

INDEX

Similartoadirectory,butusedtoestablishaphysicaltologicalcrossreference.Usedto updatethephysicaldiskaddress(tracksandsectors)offilesandtoexpediteaccesses.

GLOSSARY

INSIDE DIAMETER

Thesmallestradialpositionusedfortherecordingandplaybackoffluxreversalsona magneticdisksurface.

INITIALIZATION

Applyinginputpatternsorinstructionstoadevicesothatalloperationalparametersare ataknownvalue.

INPUT

Dataenteringthecomputertobeprocessed;alsousercommands.

INPUT/OUTPUT (I/O)

Theprocessofenteringdataintoorremovingdatafromacomputersystemora peripheraldevice.

INTELLIGENT PERIPHERAL

Aperipheraldevicethatcontainsaprocessorormicroprocessortoenableittointerpret andexecutecommands.

INTERFACE

Thedatatransmitters,datareceivers,logic,andwiringthatlinkonepieceofcomputer equipmenttoanother,suchasadiskdrivetoacontrolleroracontrollertoasystem bus.

INTERFACE STANDARD

Theinterfacespecificationsagreedtobyvariousmanufacturerstopromoteindustry- wideinterchangeabilityofproductssuchasadiskdrive.Interfacestandardsgenerally reduceproductcosts,allowsbuyerstopurchasefrommorethanonesource,andallow fastermarketacceptanceofnewproducts.

INTERLEAVE

Anorderingofphysicalsectorstobeskippedbetweenlogicalsectorsonyourhard disk.

I/O PROCESSOR

Intelligentprocessororcontrollerthathandlestheinput/outputoperationsofa computer.

INTERRUPT

Asignal,usuallyfromasubsystemtoacentralprocessingunit,tosignifythatan operationhasbeencompletedorcannotbecompleted.

J

JUMPER

Asmallpieceofplasticthatslidesoverpairsofpinsthatprotrudefromthecircuitboard ontheharddrivetomakeanelectricalconnectionandactivateaspecificoption.

K

KILOBYTE (KB)

Aunitofmeasureofapproximately1,000bytes.(However,becausecomputer memoryispartitionedintosizesthatareapoweroftwo,akilobyteisreally1,024 bytes.)

L

LANDING ZONE OR LZONE

ThecylindernumbertowhereParkHeadsmovetheread/writeheads.

LATE BIT

Abitthatisinthelatehalfofthedatawindow.

LATE WINDOW

Adatawindowthathasbeenshiftedinalatedirectiontofacilitatedatarecovery.

LATENCY

Adelayencounteredinacomputerwhenwaitingforaspecificresponse.Inadisk drivethereisbothseeklatencyandrotationallatency.Thetimerequiredforthe addressedsectortoarriveundertheheadaftertheheadispositionedoverthecorrect track.Itisaresultofthedisk’srotationalspeedandmustbeconsideredindetermining thediskdrive’stotalaccesstime.

LOGIC

Electroniccircuitrythatswitchesonandoff(“1”and“0”)toperformfunctions.

GL – 3

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Contents HA RD Drive Produc T MA Nual DiamondMax Before You Begin U T I O NContents Product Specifications Handling and InstallationAT Interface Description Host Software InterfaceInterface Commands Service and SupportGlossary Figures Manual Organization IntroductionMaxtor Corporation AbbreviationsKey Words Signal ConventionsConventions NumberingDiamondMax 6800 Key Features Product DescriptionProduct Features Functional / InterfaceDefect Management Zone DMZ On-the-Fly Hardware Error Correction Code ECCLogical Block Addressing Software ECC CorrectionBuffer Segmentation Read-Ahead ModeCache Management Automatic Write Reallocation AWRMajor HDA Components Cylinder Limitation Subsystem ConfigurationJumper Location/Configuration Dual Drive SupportPerformance Specifications Product SpecificationsDrive Configuration Models and CapacitiesPhysical Dimensions Parameter Standard MetricEPA Energy Star Compliance Power RequirementsPower Mode Definitions Environmental LimitsReliability Specifications Shock and VibrationSafety Regulatory Compliance Radiated Electromagnetic Field Emissions EMC ComplianceCanadian Emissions Statement Pre-formatted Drive Handling and InstallationHard Drive Handling Precautions Important NoticeUnpacking and Inspection Multi-pack Shipping ContainerPhysical Installation Recommended Mounting ConfigurationRepacking System Requirements Handling PrecautionsTools for Installation Drive Identification InformationGeneral Requirements Hard Drive IdentificationInstalling in a Device Bay Systems Using Cable SelectInstalling 5.25-inch Mounting Brackets and Rails Mounting Drive in SystemAttaching Interface and Power Cables Attaching System CablesSystem Setup Setting the Bios CmosBios Cmos Parameters Hard Drive Preparation System Hangs During Boot Interface Connector AT Interface DescriptionPin Description Summary PIN Name Signal Name Signal Description Pin Description TableTiming Parameters Mode PIO TimingDMA Timing Mode MIN MAX Ultra DMA TimingSustained Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In Burst Initiating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out Burst Device Terminating an Ultra DMA Data Out Burst Host Software Interface Error RegisterFeatures Register Task File RegistersCylinder Number Registers Sector Count RegisterSector Number Register Device/Head RegisterCommand Register Command Name Command Code Parameters Used SDH SummaryDevice Control Register Control Diagnostic RegistersAlternate Status Register Digital Input RegisterReset and Interrupt Handling Reset HandlingInterrupt Handling Interface Commands Set Feature CommandsRead Commands Read SectorsRead Verify Sectors Read DMA Read MultipleWrite Sectors Write CommandsSet Multiple Mode Write Verify SectorsWrite Multiple Write DMASet Feature Commands Set Features ModePower Mode Commands Sleep Mode Initialization Commands Identify Drive15-8 = PIO data transfer mode = Write Cache enabled Initialize Drive Parameters Seek, Format and Diagnostic Commands Execute Drive DiagnosticFormat Track A.R.T. Command Set Execute S.M.A.R.TNo Quibble Service Service and SupportService Policy SupportMaxFax Service Customer ServiceInternet Access Time GlossaryCylinder Zero Gigabyte GB Logical Block Addressing Read Gate Signal THIN-FILM Media
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