Maxtor 300 manual Initialize See low level formatting

Page 68

Glossary

G

GIGABYTE (GB) – One billion bytes (one thousand megabytes).

GUIDE RAILS – Plastic strips attached to the sides of a disk drive mounted in an IBM AT and compatible computers so that the drive easily slides into place.

H

HALF HEIGHT – Term used to describe a drive that occupies half the vertical space of the original full size 5 1/4-inch drive. 1.625 inches high.

HARD DISK – A type of storage medium that retains data as magnetic patterns on a rigid disk, usually made of an iron oxide or alloy over a magnesium or aluminum platter. Because hard disks spin more rapidly than floppy disks, and the head flies closer to the disk, hard disks can transfer data faster and store more in the same volume.

HARD ERROR – A repeatable error in disk data that persists when the disk is reread, usually caused by defects in the media surface.

HEAD – The tiny electromagnetic coil and metal pole piece used to create and read back the magnetic patterns (write and read information) on the media.

HIGH-CAPACITY DRIVE – By industry conventions typically a drive of 1 gigabytes or more.

HIGH-LEVEL FORMATTING – Formatting performed by the operating system’s format program. Among other things, the formatting program creates the root directory and file allocation tables. See also low-level formatting.

HOME – Reference position track for re-calibration of the actuator, usually the outer track (track 0).

HOST ADAPTER – A plug-in board that forms the interface between a particular type of computer system bus and the disk drive.

I

INITIALIZE – See low level formatting.

INITIATOR – A SCSI device that requests another SCSI device to perform an operation. A common example of this is a system requesting data from a drive. The system is the initiator and the drive is the target.

INTERFACE – A hardware or software protocol, contained in the electronics of the disk controller and disk drive, that manages the exchange of data between the drive and computer.

INTERLEAVE – The arrangement of sectors on a track. A 1:1 interleave arranges the sectors so that the next sector arrives at the read/write heads just as the computer is ready to access it. See also interleave factor.

INTERLEAVE FACTOR – The number of sectors that pass beneath the read/write heads before the next numbered sector arrives. When the interleave factor is 3:1, a sector is read, two pass by, and then the next is read. It would take three revolutions of the disk to access a full track of data. Maxtor drives have an interleave of 1:1, so a full track of data can be accessed within one revolution of the disk, thus offering the highest data throughput possible.

INTERNAL DRIVE – A drive mounted inside one of a computer’s drive bays (or a hard disk on a card, which is installed in one of the computer’s slots).

J

JUMPER – A tiny box that slips over two pins that protrude from a circuit board. When in place, the jumper connects the pins electrically. Some board manufacturers use Dual In-Line Package (DIP) switches instead of jumpers.

G-4 Quickview 300 80/100/120/160/200/250/300GB PATA

Image 68
Contents MaxtorQuickview 80/100/120/160/200/250/300GB Pata Patents Publication Number Part Number Before You Begin McCarthy Blvd Milpitas, California Tel Fax Installation Chapter IntroductionChapter General DescriptionService and Support Product SpecificationsATA BUS Interface and ATA Commands Appendix a Breaking the 137 Gigabyte Storage BarrierList of Figures List of Tables Maxtor Corporation AudienceProducts SupportManual Organization Terminology and ConventionsMSB References KEY Features Product OverviewGeneral Description Regulatory Compliance Standards Product EMI/EMS QualificationsInstallation Space RequirementsUnpacking Instructions 2Quickview 300 20-Pack Shipping Container Pata Interface Connector Hardware Options1AT Jumper Options Cable Select CS JumperMaster Jumper Configuration Drive Select DS JumperPower On Standby Cylinder Limitation Jumper CLJ4AT Connector and Jumper Location Combination Connector J1 2.1 40-Pin Pata Bus ConnectorPata BUS Adapter Adapter Board5J1 DC Power and Pata Bus Combination Connector External Drive Activity LED DC Power J1, Section aPata Bus Interface Connector J1, Section C Mounting Orientation Installation Adapter Board Installation ClearanceVentilation For Systems With a Motherboard Pata AdapterConnecting the Adapter Board and the Drive 8Drive Power Supply and Pata Bus Interface CablesTechniques in Drive Configuration Operating system limitationsDrive Configuration Models and CapacitiesPerformance Specifications Physical Dimensions Parameter ValueVoltage Tolerance Power Requirements for 80/100/120/160/200GB TypicalPower Requirements for 250GB/300GB Typical Power Mode Definitions EPA Energy Star ComplianceEnvironmental Limits Acoustic Noise11Baseplate Tempurature Measurement Location Shock and Vibration Parameter Operating NON-OPERATINGReliability Specifications Annualized Return RateStart/Stop Cycles Data ReliabilitySafety Regulatory Compliance Canadian Emissions StatementSignal Cable and Connector IntroductionMechanical Interface Electrical InterfaceCommand Interface General Feature SetSupported Commands Command Feature Register Code ValuesFlush Cache SET Multiple Mode Write Sectors 30hContent Description Word10-19 Serial number 20 Ascii characters 20-21 Retired Content Description Minimum PIO transfer cycle time without flow control Minor version number See Address Offset Reserved Area Boot, Incits TR272001 = release interrupt enabled Supported Content Description Reserved 255 Integrity word 15-8 Checksum Signature Service and Support Product Support/Technical Assistance/Customer ServiceBreaking the 137 Gigabyte Storage Barrier HistoryDOS What Do the Drives Need to Meet the Spec? Solving the 137 Gigabyte Capacity BarrierHow is the Extension Implemented? Appendix a What is the Next Barrier?What Else is Involved? Appendix B Big Numbers Appendix CGlossary Glossary FCI Acronym for flux changes per inch. See also BPI Initialize See low level formatting Millisecond ms One thousandth of a second .001 sec Glossary Quickview 300 80/100/120/160/200/250/300GB Pata G-7 Glossary Index