Page 3 - FCC Notice
FCC Notice This equipment generates and uses radio frequency energy and, if not installed and used properly—that is, in strictaccordance with the manufacturer's instructions—may cause interference to radio communications or radio andtelevision reception. It has been tested and found to comply with t...
Page 4 - Important Information About This Manual
Important Information About This Manual All information contained in or disclosed by this document is considered proprietary by Seagate Technology. Byaccepting this material, the recipient agrees that this material and the information contained therein are held inconfidence and in trust and will not...
Page 5 - Table of Contents; Introduction
Table of Contents STT8000A Product Manual Page v Table of Contents Introduction 1 Drive overview ........................................................................................................ 1 Features ..........................................................................................
Page 6 - ATAPI interface
Table of Contents Page vi STT8000A Product Manual Loading and unloading cartridges ................................................................... 24 Setting the write–protect switch ...................................................................... 25 Loading revised firmware via Seagate fi...
Page 7 - Tape format
Table of Contents STT8000A Product Manual Page vii Mode Parameter Header ................................................................................ 49 Mode Block Descriptor.................................................................................... 49 Mode Medium Partition Page ..........
Page 8 - Glossary
Table of Contents Page viii STT8000A Product Manual Glossary 73 Acronyms and measurements 77 Acronyms and abbreviations ................................................................................. 77 Units of measurement .............................................................................
Page 9 - Drive overview
Introduction Chapter 1 STT8000A Product Manual Page 1 Introduction Drive overview The Seagate STT8000A ATAPI minicartridge drive extends the Seagate family ofone-inch high, DC2000 drives that feature high performance, high reliability, andquiet operation. The drive transfers data at up to 36 megabyt...
Page 11 - Features
Introduction Chapter 1 STT8000A Product Manual Page 3 Figure 1-2Internal STT8000A with mounting brackets Features The STT8000A embodies Seagate's commitment to engineer reliable and durabletape drive products. Key features of the drive are as follows: • Two Internal form factors for installation in ...
Page 12 - Typical system configurations; Hard
Chapter 1 Introduction Page 4 STT8000A Product Manual Typical system configurations The Enhanced IDE standard supports up to four ATAPI peripherals: two devices onthe primary port and two devices on the secondary port. Of the two devices, onemust be slave to the other, which is the master. Figure 1-...
Page 13 - Flash EEPROM; Software; References; QIC-170—Preformatted magnetic minicartridge
Introduction Chapter 1 STT8000A Product Manual Page 5 Instead, the write-read heads are logically or mechanically switched to a differentposition on the tape and another track is written or read in the reverse direction.That is, the drive first records track 1 in one direction and when the end of th...
Page 14 - About this manual
Chapter 1 Introduction Page 6 STT8000A Product Manual About this manual The remaining chapters and the appendices in this manual are briefly described inthe following table. A glossary of terms is also included. Chapter Title Description 2 Specifications Contains physical, performance, environmental...
Page 15 - Specifications; Overview
Specifications Chapter 2 STT8000A Product Manual Page 7 Specifications Overview The STT8000A provides exceptional reliability in storing large amounts of computerdata. This chapter includes the following specifications and requirements: • Physical specifications • Power requirements • Drive performa...
Page 17 - Power specifications
Specifications Chapter 2 STT8000A Product Manual Page 9 Power specifications The following table lists the power specifications for the STT8000A. (Powerspecifications are measured at the tape drive power connector and are nominalvalues.) Specification Measurement DC Voltage +12 VDC +5 VDC Voltage To...
Page 18 - Performance specifications
Chapter 2 Specifications Page 10 STT8000A Product Manual Performance specifications The following table lists the performance specifications for the STT8000A. Feature Specification Capacity 4.0 gigabytes—900Oe 740' Travan cartridge (uncompressed)8.0 gigabytes—900Oe 740’ Travan cartridge (compressed)...
Page 19 - Environmental requirements
Specifications Chapter 2 STT8000A Product Manual Page 11 Environmental requirements The following table lists the environmental specifications for the STT8000A. Thedrive may be mounted either vertically or horizontally. Specification Operational Non-operational Temperature +4 1 ° t o +113° F 1 (+ 5°...
Page 20 - Reliability; Seagate does not warrant the stated MTBF as representative of any
Chapter 2 Specifications Page 12 STT8000A Product Manual Reliability The STT8000A is designed for maximum reliability and data integrity. The followingtable summarizes the reliability specifications. Feature Specification Non-recoverable error rate < 1 in 10 15 bits Error recovery and control Ree...
Page 21 - Recommended tapes; Tape capacities and formats
Specifications Chapter 2 STT8000A Product Manual Page 13 Recommended tapes The STT8000A uses pre-formatted minicartridges. The following cartridges arerecommended: Description Seagate Sony 3M/Imation Travan (740 ft)(QIC-3095) • 4.0 GB capacity • 8.0 GB capacity withdata compression 8000TT — TR-4 Sta...
Page 22 - Regulatory compliance
Chapter 2 Specifications Page 14 STT8000A Product Manual Regulatory compliance The STT8000A complies with the regulations listed in the following table. Agency Regulation CSA C22.2, No. 950-M89 TUV & IEC-RHEINLAND EN 60 950/IEC 950 UL 1950 Canadian Dept. of Communications Class B EN55022 (CISPR-...
Page 23 - Installation; Handling guidelines
Installation Chapter 3 STT8000A Product Manual Page 15 Installation Introduction This chapter explains how to install the STT8000A. The following paragraphs brieflyoutline the organization of this chapter. • The following section, Before you begin contains general information that youshould read bef...
Page 24 - Setting jumpers
Chapter 3 Installation Page 16 STT8000A Product Manual Setting jumpers Review the jumper settings to ensure that the jumpers are properly configured foryour system. Figure 3-1 shows the location of the jumper block. Figure 3-2 showsthe jumper block. Note: Record your jumper settings prior to install...
Page 25 - Installing the drive
Installation Chapter 3 STT8000A Product Manual Page 17 Installing the drive The internal drive can be installed in a one-half-inch high by 3.5-inch form factordrive bay or in an inch-high by 5.25-inch form factor (with mounting brackets). Thedrive can be installed in three different orientations: ho...
Page 26 - Turn off all power before inserting connectors.; Mounting dimensions
Chapter 3 Installation Page 18 STT8000A Product Manual 6. Secure the drive using the mounting screws. The threaded mounting brackets are designed for M3.0 metric screws. If you are mounting the drive in a 3.5-inchbay, use the screw supplied with the drive. Do not substitute other screws.Using longer...
Page 28 - ATA-2 Interface pin assignments
Chapter 3 Installation Page 20 STT8000A Product Manual ATA-2 Interface pin assignments The STT8000A provides a standard ATA-2 connector. The pin assignments for thisconnector are listed in the following table for your reference. Pin Assignment Description Source 1 RESET Reset Host 2 Gnd Ground N/A 3...
Page 30 - Notes
Chapter 3 Installation Page 22 STT8000A Product Manual Notes
Page 31 - Drive operation and maintenance; Front panel LED
Drive operation and maintenance Chapter 4 STT8000A Product Manual Page 23 Drive operation and maintenance Introduction This chapter describes important operational procedures for the STT8000A. Itcovers the following topics: • Use of the front panel LED • Using cartridges • Loading revised firmware (...
Page 32 - Using Travan cartridges; Loading and unloading cartridges
Chapter 4 Drive operation and maintenance Page 24 STT8000A Product Manual Using Travan cartridges The minicartridges recommended for use with the STT8000A are listed in chapter 2.This section describes some operations using the cartridges. Loading and unloading cartridges Your tape drive has a flip-...
Page 33 - Setting the write–protect switch
Drive operation and maintenance Chapter 4 STT8000A Product Manual Page 25 Setting the write–protect switch Travan minicartridges feature a sliding write protect tab located in the upper leftcorner of the cartridge. You can set the tab to keep data from being written on thetape. Use this switch when ...
Page 34 - Loading revised firmware via Seagate firmware cartridge
Chapter 4 Drive operation and maintenance Page 26 STT8000A Product Manual Loading revised firmware via Seagate firmware cartridge The STT8000A uses flash EEPROM. Flash EEPROM enables you to download newfirmware when revisions to firmware are released. Firmware revisions are releasedon specially enco...
Page 35 - Care and maintenance of the drive and cartridges; Caring for tape cartridges
Drive operation and maintenance Chapter 4 STT8000A Product Manual Page 27 Care and maintenance of the drive and cartridges Minimal maintenance is needed to ensure that your STT8000A minicartridge driveoperates at peak condition. This section explains how to care for tape cartridges andhow to clean t...
Page 36 - Capstan
Chapter 4 Drive operation and maintenance Page 28 STT8000A Product Manual Cleaning the drive read/write head To maintain the tape drive, you should periodically clean the read/write head. Noother periodic maintenance is required. For new cartridges, clean the head after twohours of tape movement. Th...
Page 37 - Troubleshooting
Drive operation and maintenance Chapter 4 STT8000A Product Manual Page 29 Troubleshooting If you experience problems after you install the drive, take the following actions totry to solve the problems. 1. Make sure that all cable connections are secure. 2. Check the drive to be sure that the jumper ...
Page 40 - ATA registers; Bit
Chapter 5 ATAPI Interface Page 32 STT8000A Product Manual ATA registers The following table lists the values for the registers during register initialization. Register POR RESET– (Hard Reset) ATA Reset(SRST Bit) ATAPI SoftReset Read/IdentifyDevice Cmds STATUS 00h 00h 00h 10h 41h(DRDY+ERR) ERROR 01h(...
Page 41 - Mnemonic
ATAPI Interface Chapter 5 STT8000A Product Manual Page 33 Error Register The following layout represents the Error Register. 7 6 5 4 3 2 1 0 Sense Key [3..0] MCR ABRT EOM ILI Bit(s) Mnemonic Description 7-4 Sense Key Set to indicate the reason for the CHECK bit being set inthe Status Register. 3 MCR...
Page 42 - Supported ATA Commands; Previous Cmd
Chapter 5 ATAPI Interface Page 34 STT8000A Product Manual information. If you do not program this register correctly, the drive "hangs" in theBSY state. To correct this problem, reset operations. Supported ATA Commands The ATA commands are briefly described in the following paragraphs. Execu...
Page 43 - Feature Number; Sector
ATAPI Interface Chapter 5 STT8000A Product Manual Page 35 Set Features (EFh) If an unsupported feature is selected, the command is aborted. Otherwise, theindicated parameter is set. The following list indicates the supported features: Feature Number Set Feature Commands 03h Set Transfer Mode from Se...
Page 47 - Erase command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 39 Erase command Bit=> Byte 7 6 5 4 3 2 1 0 0 Operation code (19h) 1 Reserved 1 (Long) 2 Reserved 3 Reserved 4 Reserved 5 Reserved The Erase command is only accepted when the drive is ready and located at eitherBOP 0/1 or EOD. Erase at BOP ca...
Page 48 - Inquiry command
Chapter 5 ATAPI Interface Page 40 STT8000A Product Manual Inquiry command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (12h) 1 Reserved 2 Reserved 3 Reserved 4-7 Allocation Length 8-15 Vendor ID (8 ASCII characters) ASCII “Seagate “ 16-31 Product ID (16 ASCII characters ASCII “STT8000A “ The INQUIRY co...
Page 50 - Locate command
Chapter 5 ATAPI Interface Page 42 STT8000A Product Manual Locate command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (2Bh) 1 Reserved CP Reserved 2 Reserved 3 (MSB) 4 Logical Block Address 5 6 (LSB) 7 Reserved 8 Partition 9 Reserved If the Change Partition (CP) bit is set, the drive first changes to t...
Page 51 - Log Select command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 43 Log Select command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (4Ch) 1 Reserved PCR Reserved 2 01(PC) Reserved 3 Reserved 4 Reserved 5 Reserved 6 Reserved 7 (MSB) Parameter List Length 8 (LSB) 9 Reserved The PC (Page Control) field is 01, for c...
Page 52 - Log Sense command
Chapter 5 ATAPI Interface Page 44 STT8000A Product Manual Log Sense command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (4Dh) 1 Reserved 2 01(PC) Page Code 3 Reserved 4 Reserved 5 (MSB) Parameter Pointer 6 (LSB) 7 (MSB) Allocation Length 8 (LSB) 9 Reserved The PC (Page Control) field is 01, for curren...
Page 54 - Tape Capacity Page Code
Chapter 5 ATAPI Interface Page 46 STT8000A Product Manual Tape Capacity Page Code The following table presents the Tape Capacity Page layout. Byte Description Value Meaning 0 Page Code 31h Tape Capacity Page 1 Reserved 00h - 2,3 Page Length 00,20h 32 Bytes Following 4,5 Parameter Code 0001h Remainin...
Page 55 - Mode Select command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 47 Mode Select command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (15h) 1 Reserved 1 (PF) Reserved 2 Reserved 3 (MSB) Parameter List Length 4 (LSB) 5 Reserved The Mode Select command provides a means to change device parameters. ThePF (Page Forma...
Page 56 - Mode Sense command; Page Code
Chapter 5 ATAPI Interface Page 48 STT8000A Product Manual Mode Sense command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (1Ah) 1 Reserved DBD Reserved 2 00(PC) Page Code 3 (MSB) Allocation Length 4 (LSB) 5 Reserved The PC (Page Control) field is 00, since only current values are reported. If DBD(Disab...
Page 57 - Mode Parameter Header; Speed; Mode Block Descriptor
ATAPI Interface Chapter 5 STT8000A Product Manual Page 49 Mode Parameter Header The following table describes the Mode Parameter header. Byte Description Value Meaning 0 Mode Data Length NN Select: Reserved Sense: Length of Available Following Data 1 Medium Type NN Tape type 2 Device Specific Parame...
Page 58 - Mode Medium Partition Page; Mode Capabilities and Mechanical Status Page
Chapter 5 ATAPI Interface Page 50 STT8000A Product Manual Mode Medium Partition Page The following table describes the Mode Medium Partition Page layout. Byte Description Value Meaning 0 Page Code 11h Medium Partition Page 1 Page Length 06h 6 Bytes of Information 2,3 Maximum Additional Partitions, A...
Page 59 - Mode Tape Parameters Page
ATAPI Interface Chapter 5 STT8000A Product Manual Page 51 Mode Tape Parameters Page Byte Description Value Meaning 0 Page Code 2Bh Tape Parameters Page 1 Page Length 0Eh 14 Bytes of Information 2 Density in Kilo bits per inch NN Density can imply tape format 3 Reserved 00h — 4 Reserved (Format Fill ...
Page 60 - Read command
Chapter 5 ATAPI Interface Page 52 STT8000A Product Manual Read command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (08h) 1 Reserved 1 (Fixed) 2 (MSB) 3 Transfer Length 4 (LSB) 5 Reserved The Transfer Length specifies the number of fixed 512 byte blocks to be transferred.A transfer length of 0 indicate...
Page 61 - Read Position command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 53 Read Position command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (34h) 1 Reserved 2 Reserved 3 Reserved 4 Reserved 5 Reserved 6 Reserved 7 Reserved 8 Reserved 9 Reserved The following table describes the Read Position layout. Byte Description ...
Page 63 - Request Sense command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 55 Request Sense command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (03h) 1 Reserved 2 Reserved 3 Reserved 4 Allocation Length 5 Reserved An Allocation Length value of 20 will return all Request Sense data. The Request Sense command is always acc...
Page 65 - Rewind command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 57 Rewind command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (01h) 1 Reserved 2 Reserved 3 Reserved 4 Reserved 5 Reserved The Rewind command first ensures that all buffered write data has been transferredto the medium, then causes the device to p...
Page 66 - Space command
Chapter 5 ATAPI Interface Page 58 STT8000A Product Manual Space command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (11h) 1 Reserved Space Code 2 (MSB) 3 Count 4 (LSB) 5 Reserved The only Space codes that are supported are 001b (Filemarks) and 011b (End ofData on Current Partition). For Space Filemark...
Page 67 - Test Unit Ready command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 59 Test Unit Ready command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (00h) 1 Reserved 2 Reserved 3 Reserved 4 Reserved 5 Reserved This command can be used to determine the readiness of the device to accept amedia access command. It’s purpose is ...
Page 68 - Write command
Chapter 5 ATAPI Interface Page 60 STT8000A Product Manual Write command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (0Ah) 1 Reserved 1 (Fixed) 1 Reserved 2 (MSB) 3 Transfer Length 4 (LSB) 5 Reserved The Transfer Length specifies the number of fixed 512 byte blocks to be transferred.A transfer length o...
Page 69 - Write Filemark command
ATAPI Interface Chapter 5 STT8000A Product Manual Page 61 Write Filemark command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (10h) 1 Reserved 2 Reserved 3 Reserved 4 Reserved Count 5 Reserved After receiving this command, the device sets DSC (0) and returns completionstatus. Any data remaining in the ...
Page 70 - Write Buffer (download microcode) command
Chapter 5 ATAPI Interface Page 62 STT8000A Product Manual Write Buffer (download microcode) command Bit Byte 7 6 5 4 3 2 1 0 0 Operation code (3Bh) 1 Reserved 101 (Mode) 2 Reserved 3 Reserved 4 Reserved 5 Reserved 6 (MSB) 7 Transfer Length 8 (LSB) 9 Reserved The Write Buffer command is intended only...
Page 72 - Track numbering; Frames
Chapter 6 Tape format Page 64 STT8000A Product Manual Track numbering All even numbered tracks, and the Directory Track, are recorded in the forwarddirection (the direction from the BOT marker to the EOT marker). All odd numberedtracks are recorded in the reverse direction (the direction from the EO...
Page 73 - Frame N
Tape format Chapter 6 STT8000A Product Manual Page 65 Figure 6-1General track layout Frame N Frame N+1 Frame N+2 Frame N+3 Frame N+4 Frames are numbered indirectly using the 26 most significant bits of the PhysicalBlock Address. Frame operation is controlled by the drive and generally invisible toth...
Page 74 - Blocks; EOD blocks are absolute indicators of the end of recorded data.; Tape reference servo pattern
Chapter 6 Tape format Page 66 STT8000A Product Manual Blocks Information in the Block Control byte determines the type of block being recordedexcept for ECC blocks which are recognized by their block numbers. Also,information about the number of user data bytes available in each data block isrecorde...
Page 75 - Write equalization
Tape format Chapter 6 STT8000A Product Manual Page 67 Write equalization The drive uses the technique of write equalization. RLL encoding has a 4:1 ratio inthe minimum and maximum spacing between flux transitions. Write equalizationinserts short pulses in the write current to break up the long spaci...
Page 77 - Theory of operations
Theory of operations Chapter 7 STT8000A Product Manual Page 69 Theory of operations Overview The STT8000 ATAPI minicartridge drive is based on proven Seagate designs,Seagate firmware, and the latest technology. This drive uses second generation,custom LSIs for efficient circuit layout and increased ...
Page 78 - Mechanics; Cartridge load mechanism
Chapter 7 Theory of operations Page 70 STT8000A Product Manual The following table shows clock frequencies used by the STT8000 drive VCO Frequencies—All Derived from System Clock (42 MHz Crystal Oscillator) FundamentalFrequency 28 MHz 28 MHz 28 MHz 24.89 MHz ChannelFrequency 9.33 MHz 7.00 MHz 4.667 ...
Page 79 - Control circuits
Theory of operations Chapter 7 STT8000A Product Manual Page 71 Control circuits The control logic module shown in Figure 7-1 includes a buffer manager to handledata movement between the controller, the buffer, and the tape formatter. Thismodule also includes logic to perform ECC and CRC generation a...
Page 80 - Media—Travan minicartridges
Chapter 7 Theory of operations Page 72 STT8000A Product Manual the position of the SAFE indicator on the cartridge and disables writing of write-protected (SAFE) cartridges. The Head-Position Sensor is an electro-optical assembly (LED and photo-transistor)to determine the approximate head position. ...
Page 82 - Dew—Collection of moisture in a tape drive.
Appendix A Glossary Page 74 STT8000A Product Manual Dew—Collection of moisture in a tape drive. Directory track—The track at the centerline of the tape, identified as track 254 by its Track ID frame. Disc Drive—A peripheral storage device that rotates the disk, writes data onto it, and reads data fr...
Page 85 - Acronyms and measurements; Acronyms and abbreviations; Acronym
Acronyms and Measurements Appendix B STT8000A Product Manual Page 77 Acronyms and measurements Acronyms and abbreviations Acronym Meaning ANSI American National Standards Institute BIOS Basic Input Output System BOM Beginning of Media BOT Beginning Of Tape BPI Bits Per Inch CD Compact Disc CMOS Comp...
Page 87 - Units of measurement; Measure
Acronyms and Measurements Appendix B STT8000A Product Manual Page 79 Units of measurement Measure Meaning A Amp C Celsius or Centigrade cm centimeter dBa decibels, A-weighted sound power reference one picowatt F Fahrenheit ft foot or feet g acceleration of a free-falling body; equal to 32.17 feet pe...
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