Seagate STT8000A Manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .STT8000A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ATAPI Minicartridge

Chapter 1 IntroductionPage 2 STT8000A Product ManualThe STT8000A conforms to the QIC-3095 development standard adopted byQuarter-Inch Cartridge Drive

Introduction Chapter 1STT8000A Product Manual Page 3Figure 1-2Internal STT8000A with mounting bracketsFeaturesThe STT8000A embodies Seagate's com

Chapter 1 IntroductionPage 4 STT8000A Product ManualTypical system configurationsThe Enhanced IDE standard supports up to four ATAPI peripherals: two

Introduction Chapter 1STT8000A Product Manual Page 5Instead, the write-read heads are logically or mechanically switched to a differentposition on the

Chapter 1 IntroductionPage 6 STT8000A Product ManualAbout this manualThe remaining chapters and the appendices in this manual are briefly described in

Specifications Chapter 2STT8000A Product Manual Page 7SpecificationsOverviewThe STT8000A provides exceptional reliability in storing large amounts of

Chapter 2 SpecificationsPage 8 STT8000A Product ManualFigure 2-1STT8000A (3.5-Inch mount) general dimensions4.00 in (101.6 mm)6.19 in (157.2 mm)0.157

Specifications Chapter 2STT8000A Product Manual Page 9Power specificationsThe following table lists the power specifications for the STT8000A. (Powers

Chapter 2 SpecificationsPage 10 STT8000A Product ManualPerformance specificationsThe following table lists the performance specifications for the STT8

Specifications Chapter 2STT8000A Product Manual Page 11Environmental requirementsThe following table lists the environmental specifications for the ST

© 1998 Seagate Technology, Inc. All rights reservedNo part of this publication may be reproduced in any form without written permission from SeagateTe

Chapter 2 SpecificationsPage 12 STT8000A Product ManualReliabilityThe STT8000A is designed for maximum reliability and data integrity. The followingta

Specifications Chapter 2STT8000A Product Manual Page 13Recommended tapesThe STT8000A uses pre-formatted minicartridges. The following cartridges arere

Chapter 2 SpecificationsPage 14 STT8000A Product ManualRegulatory complianceThe STT8000A complies with the regulations listed in the following table.A

Installation Chapter 3STT8000A Product Manual Page 15InstallationIntroductionThis chapter explains how to install the STT8000A. The following paragrap

Chapter 3 InstallationPage 16 STT8000A Product ManualSetting jumpersReview the jumper settings to ensure that the jumpers are properly configured fory

Installation Chapter 3STT8000A Product Manual Page 17Installing the driveThe internal drive can be installed in a one-half-inch high by 3.5-inch form

Chapter 3 InstallationPage 18 STT8000A Product Manual6. Secure the drive using the mounting screws. The threaded mounting bracketsare designed for M3

Installation Chapter 3STT8000A Product Manual Page 19Figure 3-4Mounting holes on internal drive (without mounting brackets)6.2 in(159 mm)2.382 in(60 m

Chapter 3 InstallationPage 20 STT8000A Product ManualATA-2 Interface pin assignmentsThe STT8000A provides a standard ATA-2 connector. The pin assignme

Installation Chapter 3STT8000A Product Manual Page 21Pin Assignment Description Source24–REQ Ground N/A25–I/O I/O Read Host26GND Ground N/A27IORDY I/O

FCC NoticeThis equipment generates and uses radio frequency energy and, if not installed and used properly—that is, in strictaccordance with the manuf

Chapter 3 InstallationPage 22 STT8000A Product ManualNotes

Drive operation and maintenance Chapter 4STT8000A Product Manual Page 23Drive operation and maintenanceIntroductionThis chapter describes important op

Chapter 4 Drive operation and maintenancePage 24 STT8000A Product ManualUsing Travan cartridgesThe minicartridges recommended for use with the STT8000

Drive operation and maintenance Chapter 4STT8000A Product Manual Page 25Setting the write–protect switchTravan minicartridges feature a sliding write

Chapter 4 Drive operation and maintenancePage 26 STT8000A Product ManualLoading revised firmware via Seagate firmware cartridgeThe STT8000A uses flash

Drive operation and maintenance Chapter 4STT8000A Product Manual Page 27Care and maintenance of the drive and cartridgesMinimal maintenance is needed

Chapter 4 Drive operation and maintenancePage 28 STT8000A Product ManualCleaning the drive read/write headTo maintain the tape drive, you should perio

Drive operation and maintenance Chapter 4STT8000A Product Manual Page 29TroubleshootingIf you experience problems after you install the drive, take th

Chapter 4 Drive operation and maintenancePage 30 STT8000A Product ManualNotes

ATAPI Interface Chapter 5STT8000A Product Manual Page 31ATAPI interfaceIntroductionThe STT8000A provides an ATA Packet Interface (ATAPI) controller fo

Important Information About This ManualAll information contained in or disclosed by this document is considered proprietary by Seagate Technology. Bya

Chapter 5 ATAPI InterfacePage 32 STT8000A Product ManualATA registersThe following table lists the values for the registers during register initializa

ATAPI Interface Chapter 5STT8000A Product Manual Page 33Error RegisterThe following layout represents the Error Register.76543 2 1 0Sense Key [3..0] M

Chapter 5 ATAPI InterfacePage 34 STT8000A Product Manualinformation. If you do not program this register correctly, the drive "hangs" in the

ATAPI Interface Chapter 5STT8000A Product Manual Page 35Set Features (EFh)If an unsupported feature is selected, the command is aborted. Otherwise, th

Chapter 5 ATAPI InterfacePage 36 STT8000A Product ManualIssuing PIO and DMA transfer modes does not actually select these operations;however, issuing

ATAPI Interface Chapter 5STT8000A Product Manual Page 37Word Description Value Meaning53 Field Validity 0002h Fields 54-58 not valid.Fields 64-70 vali

Chapter 5 ATAPI InterfacePage 38 STT8000A Product ManualATAPI interfaceThe following table lists the ATAPI interface commands for the drive. In this t

ATAPI Interface Chapter 5STT8000A Product Manual Page 39Erase commandBit=>Byte765432100 Operation code (19h)1 Reserved 1 (Long)2 Reserved3 Reserved

Chapter 5 ATAPI InterfacePage 40 STT8000A Product ManualInquiry commandBitByte765432100 Operation code (12h)1 Reserved2 Reserved3 Reserved4-7 Allocati

ATAPI Interface Chapter 5STT8000A Product Manual Page 41Load/Unload commandBitByte765432100 Operation code (1Bh)1 Reserved2 Reserved3 Reserved4 Reserv

Table of ContentsSTT8000A Product Manual Page vTable of ContentsIntroduction 1Drive overview ...

Chapter 5 ATAPI InterfacePage 42 STT8000A Product ManualLocate commandBitByte765432100 Operation code (2Bh)1 Reserved CP Reserved2 Reserved3 (MSB)4 Lo

ATAPI Interface Chapter 5STT8000A Product Manual Page 43Log Select commandBitByte765432100 Operation code (4Ch)1 Reserved PCR Reserved2 01(PC) Reserve

Chapter 5 ATAPI InterfacePage 44 STT8000A Product ManualLog Sense commandBitByte765432100 Operation code (4Dh)1 Reserved2 01(PC) Page Code3 Reserved4

ATAPI Interface Chapter 5STT8000A Product Manual Page 45Error Counter Page (Read)The following table presents the Error Counter Page layout.Byte Descr

Chapter 5 ATAPI InterfacePage 46 STT8000A Product ManualTape Capacity Page CodeThe following table presents the Tape Capacity Page layout.Byte Descrip

ATAPI Interface Chapter 5STT8000A Product Manual Page 47Mode Select commandBitByte765432100 Operation code (15h)1 Reserved 1 (PF) Reserved2 Reserved3

Chapter 5 ATAPI InterfacePage 48 STT8000A Product ManualMode Sense commandBitByte765432100 Operation code (1Ah)1 Reserved DBD Reserved2 00(PC) Page Co

ATAPI Interface Chapter 5STT8000A Product Manual Page 49Mode Parameter HeaderThe following table describes the Mode Parameter header.Byte Description

Chapter 5 ATAPI InterfacePage 50 STT8000A Product ManualMode Medium Partition PageThe following table describes the Mode Medium Partition Page layout.

ATAPI Interface Chapter 5STT8000A Product Manual Page 51Mode Tape Parameters PageByte Description Value Meaning0Page Code 2Bh Tape Parameters Page1Pag

Table of ContentsPage vi STT8000A Product ManualLoading and unloading cartridges ... 2

Chapter 5 ATAPI InterfacePage 52 STT8000A Product ManualRead commandBitByte765432100 Operation code (08h)1 Reserved 1 (Fixed)2 (MSB)3 Transfer Length4

ATAPI Interface Chapter 5STT8000A Product Manual Page 53Read Position commandBitByte765432100 Operation code (34h)1 Reserved2 Reserved3 Reserved4 Rese

Chapter 5 ATAPI InterfacePage 54 STT8000A Product Manual*These fields might appear to report the number of bytes/blocks in the buffer.However, this in

ATAPI Interface Chapter 5STT8000A Product Manual Page 55Request Sense commandBitByte765432100 Operation code (03h)1 Reserved2 Reserved3 Reserved4 Allo

Chapter 5 ATAPI InterfacePage 56 STT8000A Product ManualThe following table describes the REQUEST SENSE layout.Byte Description Value Meaning0Valid, E

ATAPI Interface Chapter 5STT8000A Product Manual Page 57Rewind commandBitByte765432100 Operation code (01h)1 Reserved2 Reserved3 Reserved4 Reserved5 R

Chapter 5 ATAPI InterfacePage 58 STT8000A Product ManualSpace commandBitByte765432100 Operation code (11h)1 Reserved Space Code2 (MSB)3 Count4 (LSB)5

ATAPI Interface Chapter 5STT8000A Product Manual Page 59Test Unit Ready commandBitByte765432100 Operation code (00h)1 Reserved2 Reserved3 Reserved4 Re

Chapter 5 ATAPI InterfacePage 60 STT8000A Product ManualWrite commandBitByte765432100 Operation code (0Ah)1 Reserved 1 (Fixed)1 Reserved2 (MSB)3 Trans

ATAPI Interface Chapter 5STT8000A Product Manual Page 61Write Filemark commandBitByte765432100 Operation code (10h)1 Reserved2 Reserved3 Reserved4 Res

Table of ContentsSTT8000A Product Manual Page viiMode Parameter Header ...

Chapter 5 ATAPI InterfacePage 62 STT8000A Product ManualWrite Buffer (download microcode) commandBitByte765432100 Operation code (3Bh)1 Reserved 101 (

Tape format Chapter 6STT8000A Product Manual Page 63Tape formatIntroductionThe STT8000 ATAPI minicartridge drive conforms to the QIC-3095-MC recording

Chapter 6 Tape formatPage 64 STT8000A Product ManualTrack numberingAll even numbered tracks, and the Directory Track, are recorded in the forwarddirec

Tape format Chapter 6STT8000A Product Manual Page 65Figure 6-1General track layoutFrame N Frame N+1 Frame N+2 Frame N+3 Frame N+4Frames are numbered i

Chapter 6 Tape formatPage 66 STT8000A Product ManualBlocksInformation in the Block Control byte determines the type of block being recordedexcept for

Tape format Chapter 6STT8000A Product Manual Page 67Write equalizationThe drive uses the technique of write equalization. RLL encoding has a 4:1 ratio

Chapter 6 Tape formatPage 68 STT8000A Product ManualNotes

Theory of operations Chapter 7STT8000A Product Manual Page 69Theory of operationsOverviewThe STT8000 ATAPI minicartridge drive is based on proven Seag

Chapter 7 Theory of operationsPage 70 STT8000A Product ManualThe following table shows clock frequencies used by the STT8000 driveVCO Frequencies—All

Theory of operations Chapter 7STT8000A Product Manual Page 71Control circuitsThe control logic module shown in Figure 7-1 includes a buffer manager to

Table of ContentsPage viii STT8000A Product ManualGlossary 73Acronyms and measurements 77Acronyms and abbreviations ...

Chapter 7 Theory of operationsPage 72 STT8000A Product Manualthe position of the SAFE indicator on the cartridge and disables writing of write-protect

Glossary Appendix ASTT8000A Product Manual Page 73GlossaryATA Packet Interface—The interface providing for communications between the host computer an

Appendix A GlossaryPage 74 STT8000A Product ManualDew—Collection of moisture in a tape drive.Directory track—The track at the centerline of the tape,

Glossary Appendix ASTT8000A Product Manual Page 75Randomizing—A re-coding of data symbols before they are written to tape in order to provide a consis

Appendix A GlossaryPage 76 STT8000A Product ManualNotes

Acronyms and Measurements Appendix BSTT8000A Product Manual Page 77Acronyms and measurementsAcronyms and abbreviationsAcronym MeaningANSI American Nat

Appendix B Acronyms and MeasurementsPage 78 STT8000A Product ManualAcronym MeaningLSI Large Scale IntegrationMTBF Mean Times Between FailuresMTTR Mean

Acronyms and Measurements Appendix BSTT8000A Product Manual Page 79Units of measurementMeasure MeaningA AmpC Celsius or Centigradecm centimeterdBa dec

Appendix B Acronyms and MeasurementsPage 80 STT8000A Product Manual

Introduction Chapter 1STT8000A Product Manual Page 1IntroductionDrive overviewThe Seagate STT8000A ATAPI minicartridge drive extends the Seagate famil