Maxtor VL 17 manual THIN-FILM Media

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GLOSSARY

T

THIN-FILM HEAD Amagnetictransducermanufacturedbydepositionofmagneticandelectricalmaterials onabasematerialcontrastedwithpriorartmechanicalmethods.Read/writeheads whoseread/writeelementisdepositedusingintegratedcircuittechniquesratherthan beingmanuallywound.

THIN-FILM MEDIA

Seeplatedthinfilmmedia.

TRACK

Onesurfaceofacylinder.Apathwhichcontainsreproducibleinformationleftona magneticmediumbyrecordingmeansenergizedfromasinglechannel.

TRACK-FOLLOWING SERVO

Aclosed-looppositionercontrolsystemthatcontinuouslycorrectsthepositionofthe diskdrive’sheadsbyutilizingareferencetrackandafeedbackloopinthehead positioningsystem.(Seealsoclosedloop.)

TRACKS PER INCH (TPI)

Ameasurementofradialdensity.Tracksperinchofdiskradius.

TRACK POSITIONING

Themethod,bothmechanicalandelectrical,usedtopositiontheheadsoverthecorrect cylinderinadiskdrivesystem.

U

UN-CORRECTABLE ERROR

AnerrorthatisnotabletobeovercomewithErrorDetectionandCorrection.

UNFORMATTED CAPACITY

Storagecapacityofdiskdrivepriortoformatting;alsocalledthegrosscapacity.(See format.)Therawcapacityofadrivenottakingintoaccountthecapacitylossdueto storageoftheformatcontrolinformationonthedisksurfaces.

UNRECOVERABLE ERROR

AreaderrorfallingoutsidethecapabilityofanECCmechanismtocorrect,ornot abletobeovercomebyrereadingthedatainquestion,withorwithoutrepositioning thehead.

V

VOICE COIL MOTOR

Apositioningmotorthatusesthesameprincipleasavoicecoilinaloudspeaker.The motorhasnodetentpositions.Themechanicalmotionoutputofitcanbeeitherrotary orlinear.

W

WHITNEY HEAD

AsuccessortotheoriginalWinchesterread/writeheaddesign.Theprimarychange wastomaketheflexuresmallerandmorerigid.FirstusedinIBM3370/3380.

WHITNEY TECHNOLOGY

Amethodofconstructingaread/writeheadinarigiddiskdriveusingaWhitney head.InallotherdetailsitisthesameasWinchestertechnology.

WINCHESTER HEAD Theread/writeheadusedinWinchestertechnology,non-removablemediadisk drives.Maybeeitheramonolithicorcompositetype.Itisaerodynamicallydesigned toflywithinmicroinchesofthedisksurface.

WINCHESTER TECHNOLOGY

AmethodofconstructingarigiddiskdriveusingconceptsintroducedintheIBM model3340diskdrive.Theprimarychangesfrompriortechnologywastolowerthe massoftheslider,useofamonolithicslider,radicallychangingthedesignofthe flexureandhavingtheslidercometorestonalubricateddisksurfacewhendisk rotationceases.Inadditiontotheabove,atotallysealedchambercontainingtheread/ writeheadsanddiskswasusedtoprotectagainstcontamination.

WINDOW MARGIN

Theamountoftolerancearead/writesystemhasfortransitionjitterataspecifiederror ratelevel.

WORD

Anumberofbits,typicallyamultipleofeight,processedinparallel(inasingle operation).Standardwordlengthsare8,16,32and64bits(1,2,4,or8bytes).

WRITE

Therecordingoffluxreversalsonamagneticmedia.

WRITE PRE-COMPENSATION

Theintentionaltimeshiftingofwritedatatooffsettheeffectsofbitshiftinmagnetic recording.

WRITE GATE SIGNAL

Adigitalinputsignallevelwhichcausesthedrivecircuitrytorecord(write)data.

GL – 6

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Contents HA RD Drive Produc T MA Nual DiamondMaxVL REV EC no Section Description Date Before You Begin U T I O NContents Product Specifications Handling and InstallationAT Interface Description Host Software InterfaceService and Support Interface CommandsGlossary Figures Manual Organization IntroductionMaxtor Corporation AbbreviationsKey Words Signal ConventionsConventions NumberingDiamondMax VL 17 Key Features Product DescriptionProduct Features Functional / InterfaceLogical Block Addressing On-the-Fly Hardware Error Correction Code ECCDefect Management Zone DMZ Cache Management Major 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 VibrationRadiated Electromagnetic Field Emissions EMC Compliance Safety Regulatory ComplianceCanadian Emissions Statement Pre-formatted Drive Handling and InstallationHard Drive Handling Precautions Important NoticeUnpacking and Inspection Multi-pack Shipping ContainerRecommended Mounting Configuration Physical InstallationRepacking 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 CablesSetting the Bios Cmos System SetupBios Cmos Parameters Hard Drive Preparation System Hangs During Boot AT Interface Description Interface ConnectorPIN Signal Pin Description SummaryPIN 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 Timer Value TIME-OUT Period Command Name Command Code Parameters UsedSummary Device Control Register Control Diagnostic RegistersAlternate Status Register Digital Input RegisterReset Handling Reset and Interrupt HandlingInterrupt Handling Interface Commands Set Feature CommandsRead Sectors Read CommandsRead Verify Sectors Read DMA Read MultipleWrite Sectors Write CommandsSet Multiple Mode Write Verify SectorsWrite Multiple Write DMASet Features Mode Set Feature CommandsValue Description Power Mode Commands Sleep Mode Word Content Description Initialization CommandsIdentify Drive 15-8 = PIO data transfer mode = Write Cache enabled Initialize Drive Parameters Error Code Description Seek, Format and Diagnostic CommandsExecute Drive Diagnostic Format TrackA.R.T. Command Set Execute S.M.A.R.TNo Quibble Service Service and SupportService Policy SupportCustomer Service MaxFax ServiceInternet Access Time GlossaryCylinder Zero Gigabyte GB Logical Block Addressing Read Gate Signal THIN-FILM Media
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