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STT2401A, STT3401A

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Travan 40 tape drive

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Product Manual

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© 2002 Seagate Removable Storage Solutions LLC. All rights reserved

Part Number 100249522

Seagate and the Seagate logo are registered trademarks of Seagate Technology LLC. Other product names are trademarks or registered trademarks of their owners.

Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission from Seagate Removable Storage Solutions LLC.

Publication Number T-012,October 23, 2002

FCC Notice

This equipment generates and uses radio frequency energy and, if not installed and used properly—thatis, in strict accordance with the manufacturer’sinstructions—maycause interference to radio communications or radio and television reception. It has been tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment on and off, you are encouraged to try to correct the interference by one or more of the following measures:

Reorient the receiving antenna.

Relocate the computer with respect to the receiver.

Move the computer into a different outlet so that the computer and receiver are on different branch circuits.

If necessary, you should consult the dealer or an experienced radio/television technician for additional suggestions. You may find the booklet, How to Identify and Resolve Radio-TV Interference Problems, prepared by the Federal Communications Commission, helpful. This booklet (Stock No.004-000-00345-4)is available from the U.S. Government Printing Office, Washington, DC 20402.

Warning. Changes or modifications made to this equipment, which have not been expressly approved by Seagate,

may cause radio and television interference problems that could void the user’s authority to operate the equipment.

Further, this equipment complies with the limits for a Class B digital apparatus in accordance with Canadian Radio Interference Regulations ICES-003.

Cet appareil numérique de la classe B est conforme a la norme NMB-003du Canda.

Important Information About This Manual

Seagate provides this manual “as is,” without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Seagate reserves the right to change, without notification, the specifications contained in this manual.

Seagate assumes no responsibility for the accuracy, completeness, sufficiency, or usefulness of this manual, nor for any problem that may arise from the use of the information in this manual.

Table of Contents

 

Table of Contents

 

Introduction

1

Drive overview..............................................................................................................

1

Key features ..........................................................................................................

1

Typical system configurations......................................................................................

2

Minicartridge technology overview ...............................................................................

3

Flash EEPROM............................................................................................................

4

References...................................................................................................................

4

Specifications

5

Performance specifications..........................................................................................

5

Recording Specifications .............................................................................................

5

Physical specifications .................................................................................................

6

Power supply specifications .........................................................................................

7

Current and power requirements...........................................................................

7

Power connector ...................................................................................................

8

Environmental requirements ........................................................................................

8

Reliability......................................................................................................................

9

Mean-Time-Between-Failures ...............................................................................

9

Mean-Time-To-Repair ...........................................................................................

9

Tape compatibility ......................................................................................................

10

Regulatory compliance ..............................................................................................

10

Installation

11

Before you begin ........................................................................................................

11

Handling guidelines .............................................................................................

11

Setting jumpers ..........................................................................................................

11

Installing the drive ......................................................................................................

13

Mounting dimensions .................................................................................................

14

Drive operation and maintenance

16

Introduction ................................................................................................................

16

Front panel LED.........................................................................................................

16

Using Travan cartridges.............................................................................................

17

Loading cartridges ...............................................................................................

17

Unloading cartridges ...........................................................................................

17

Emergency cartridge removal .............................................................................

18

Forcing cartridge ejection .............................................................................

18

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Seagate Travan 40 Product Manual

 

Table of Contents

Manual ejection.............................................................................................

18

Setting the write-protectswitch ...........................................................................

19

Drive maintenance.....................................................................................................

20

Caring for tape cartridges....................................................................................

20

Cleaning the drive read/write head......................................................................

20

Troubleshooting .........................................................................................................

21

Initial checks........................................................................................................

21

No drive response, front panel LED does not light..............................................

21

Front panel LED blinks rapidly following power-upself-test................................

21

Drive does not come ready .................................................................................

22

Motor starts to drive cartridge but stops immediately..........................................

22

Drive will not write but will read previously written tapes.....................................

22

Tape does not stream .........................................................................................

22

Drive not seen during boot-up.............................................................................

23

Drive not seen by OS after boot-up.....................................................................

23

Tape won’t load ...................................................................................................

23

Back-upprogram “freezes” or “locks up” ............................................................

23

“Bad blocks,” media errors, etc. ..........................................................................

24

Slow backups ......................................................................................................

24

Tape won’t eject ..................................................................................................

24

“Incompatible format,” “Won’t write on this tape” ................................................

24

Loading revised firmware via Seagate firmware cartridge.........................................

25

ATAPI interface

27

Introduction ................................................................................................................

27

ATA-2Interface pin assignments ..............................................................................

27

ATAPI commands......................................................................................................

28

Specification compliance ...........................................................................................

29

ERASE (Group 0, Op. Code 19)................................................................................

30

INQUIRY (Group 0, Op. Code 12) .............................................................................

31

LOAD/UNLOAD (Group 0, Op. Code 1B)..................................................................

33

LOCATE (Group 1, Op. Code 2B) .............................................................................

35

LOG SELECT (Group 2, Code 4C) ...........................................................................

36

LOG SENSE (Group 2, Op. Code 4D) ......................................................................

37

Page 00h—SupportedLog Page ........................................................................

38

Page 03h—ErrorCounter for READ (ATAPI) .....................................................

38

Page 03—ErrorCounter for READ definitions .............................................

39

Page 2Eh—TapeAlertDiagnostic .......................................................................

40

Page 31h—TapeCapacity Page.........................................................................

45

Page 31h—SpecialInformation ..........................................................................

46

Seagate Travan 40 Product Manual

Page v

Table of Contents

 

Page 31h—SpecialInformation Definitions ..................................................

46

Page 33h—SpecialInformation in STT31401A mode ........................................

47

Page 33h—SpecialInformation Definitions ..................................................

48

Page 3Eh—ReportCheck-SumofFLASH-RAM(LOG SENSE only).................

49

Page 3Eh—ReportCheck-SumDefinitions ..................................................

49

MODE SELECT (Group 0, Op. Code 15) ..................................................................

51

CDB for MODE SELECT Command ...................................................................

51

MODE SENSE (Group 0, Op. Code 1A)....................................................................

61

PREVENT/ALLOW MEDIA REMOVAL (Group 0, Op. Code 1E) ..............................

66

READ (Group 0, Op. Code 08) ..................................................................................

67

READ BUFFER (Group 1, Op. Code 3C) ..................................................................

69

READ POSITION (Group 1, Op. Code 34) ................................................................

71

REQUEST SENSE (Group 0, Op. Code 03) .............................................................

73

Request Sense Keys ...........................................................................................

76

Sense Code (ASC) and ASC Qualifier Assignments ..........................................

77

REWIND (Group 0, Op Code 01) ..............................................................................

80

SEND DIAGNOSTIC (Group 0, Code 1D).................................................................

81

SPACE (Group 0, Op. Code 11) ................................................................................

82

TEST UNIT READY (Group 0, Op Code 00) .............................................................

84

VERIFY (Group 0, Op. Code 13) ...............................................................................

85

WRITE (Group 0, Op. Code 0A) ................................................................................

86

WRITE BUFFER (Group 1, Op. Code 3B) ................................................................

87

WRITE FILEMARK (Group 0, Op. Code 10) .............................................................

89

ATA Command Descriptions .....................................................................................

91

CHECK POWER MODE (ATA Command E5) ..........................................................

93

DEVICE RESET (ATA Command 08) .......................................................................

94

EXECUTE DEVICE DIAGNOSTIC (ATA Command 90)...........................................

95

IDENTIFY DEVICE (ATA Command EC) ..................................................................

97

IDENTIFY PACKET DEVICE (ATA Command A1) ...................................................

98

IDLE (ATA Command E3) .......................................................................................

105

IDLE IMMEDIATE (ATA Command E1) ..................................................................

106

NOP (ATA Command 00) ........................................................................................

107

PACKET (ATA Command A0) .................................................................................

108

SET FEATURES (ATA Command EF) ....................................................................

109

SLEEP (ATA Command E6)....................................................................................

111

STANDBY (ATA Command E2) ..............................................................................

112

STANDBY IMMEDIATE (ATA Command E0) .........................................................

113

Travan 40 tape format

114

Introduction ..............................................................................................................

114

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Seagate Travan 40 Product Manual

 

Table of Contents

Tape partitioning ......................................................................................................

114

Track positions ........................................................................................................

114

Track numbering......................................................................................................

115

Track format ............................................................................................................

115

Frames ..............................................................................................................

115

Blocks................................................................................................................

117

Tape reference servo pattern ..................................................................................

117

Write equalization ....................................................................................................

118

Randomization.........................................................................................................

118

Theory of operations

119

Overview..................................................................................................................

119

Block diagram ..........................................................................................................

119

Drive mechanisms ...................................................................................................

120

Mechanics .........................................................................................................

120

Cartridge-loadmechanism ................................................................................

120

Capstan/drive-motorassembly .........................................................................

120

Chassis .............................................................................................................

120

Control circuits .........................................................................................................

120

Head design.............................................................................................................

121

Flash EEPROM .......................................................................................................

121

Sensors and switches..............................................................................................

121

Drive media (Travan minicartridges) .......................................................................

122

Glossary

123

Seagate Travan 40 Product Manual

Page vii

Introduction Chapter 1

Introduction

1

 

 

 

 

 

Drive overview

The Seagate® STT3401A and STT2401A extend the Seagate family of one-inchhigh Travan drives that feature high performance, high reliability, and quiet operation. The drives transfer data at up to 120 megabytes per minute (Mbytes/min) without compression.

With optimal system resources and compressible data structures, nominal transfer rates of up to 240 Mbytes per minute can be obtained using software data compression (assuming a 2:1 compression ratio). The compression ratio is dependent on the specific system and the nature of the files being compressed.

These drives are internal devices, providing affordable storage in either 3.5-inch(STT3401A) orhalf-high5.25-inch(STT2401A) form factors, for easy installation in today's computers.

Key features

Automated cartridge loading: When a cartridge is inserted into the drive, it is automatically drawn into the drive mechanism. The cartridge is fully loaded within the drive and does not extend beyond the front of the bezel during operation. Pressing the Eject button causes the drive to unload the cartridge until it extends out about one inch beyond the bezel.

Backward read-compatiblewith Industry StandardQIC-3220-MCTravan 5 Data Format

Selectable sustained data transfer rate of 2.0 Mbytes per second (compressed) or 1.22 Mbytes per second (native), to support various host systems

Auto-Throttle™tape speed adjusts to sustain streaming operation with the Host transfer rates.

ATAPI interface

Servo-burst-controlledhigh-resolutionhead positioning system

Available in either 3.5-inch,1-inchhigh or5.25-inchhalf-heightform factors

Data integrity of less than 1 hard read error in 1017 bits, with automatic retry algorithm

8-Mbytedata buffer

High-speed,110inch-per-secondtape rewind

EEPROM containing non-volatileoption settings and diagnostic results

Seagate Travan 40 Product Manual

Page 1

Chapter 1

Introduction

With the availability of greater capacity disc drives and the growth of small networks, the need for cost-effective,high-capacitystorage has grown. The STT3401A is ideal for standalone computers, workstations, and small networks.

Figure 1 shows the STT3401A 3.5-inchinternal drive. Figure 2 shows the

STT2401A, which comes with brackets for mounting in 5.25-inchdrive bays.

Figure 1

STT3401A 3.5-inchinternal drive

Figure 2

STT2401A 5.25-inchinternal drives

Typical system configurations

The Enhanced IDE standard supports up to four ATAPI peripherals: two devices on the primary port and two devices on the secondary port. Of the two devices on each port, one must be designated master and the other must be designated slave. Figure 3 on the following page shows sample configurations for two ATAPI systems.

Page 2

Seagate Travan 40 Product Manual

Introduction

Chapter 1

 

 

 

 

 

 

Figure 3

Sample ATAPI configurations

Minicartridge technology overview

Having evolved from the original mass-storagemedium—reel-to-reel,one-half-inchtapestorage—theminicartridge technology of today offers fast, efficient, highcapacity storage in a compact,easily-removablehard-shellpackage. In little more than a decade, storage capacities have increased from some 60 megabytes (Mbytes) on 9 tracks(QIC-24,1982) to the40-Gbyte(compressed) capacity achievable with a single Travan 40 cartridge.

The streaming-tapeintelligence in the Travan drive provides a continuous tape motion with an uninterrupted, precisely coordinated flow of data to and from the minicartridge. This "streaming" motion combined with the "serpentine" recording method is one element that contributes to the increased storage capacities, efficiency, and speed of today's minicartridge technology.

Use of the "serpentine" recording method exploits the bi-directionalcapabilities of the cartridge. With this method, the tape is not rewound at the end of a track. Instead, thewrite-readheads are logically or mechanically switched to a different position 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 the tape is reached, the head is moved and the direction of tape motion is reversed to record track 2. This serpentine process continues until the entire tape is recorded. The individual tracks are sequential to minimize the amount of head motion as the heads change position for each track.

Seagate Travan 40 Product Manual

Page 3

Chapter 1

Introduction

Flash EEPROM

The Seagate Travan drives incorporate leading-edgetechnology in the flash EEPROM, which is useful should the drive's firmware need to be upgraded. With the permanently installed, electrically upgradeable, flash EEPROM memory, revised firmware for the drive can be loaded using a Seagate OEM firmware cartridge or through the host IDE bus.

This feature enables qualified OEMs needing to revise the drive firmware to do so rapidly and at a reduced cost. Flash EEPROM should also prolong the life cycle of a drive because many new techniques—suchas increasing the capacity of the drive through support for longertapes—mayrequire only a firmware upgrade.

References

The following standards documents describe some of the technology incorporated in the drives referenced in this manual.

QIC-170—Preformattedmagnetic minicartridge

QIC-157—ATAPIcommand set for streaming tape

QIC-3220-MC—Serialrecorded magnetic tape minicartridge(TR-5)

Travan 640 —Serialrecorded magnetic tape minicartridge (Travan 40 or 40GB)

Tape Alert Specification 3.0

For more information about a particular QIC standard, contact Quarter-Inch

Cartridge Standards, Inc., c/o Freeman Associates, 311 East Carrillo Street, Santa

Barbara, California 93101.

Page 4

Seagate Travan 40 Product Manual

Specifications Chapter 2

Specifications

2

 

 

 

 

 

Performance specifications

The following table lists the performance specifications for the Seagate STT2401A and STT3401A tape drives.

Feature

Specification

 

 

Capacity

20.0 Gbytes—Travan40 cartridge (native)

 

(40.0 Gbytes, assuming 2:1 compression)

 

 

Sustained backup rate

up to 120 Mbytes per minute native;

 

up to 240 Mbytes per minute with 2:1 compression

 

 

Tape speed

92 inches per second

Read/Write

 

(56 inches per second throttle-downspeed)

Fast Forward/Rewind

110 inches per second

 

 

Load time

< 2 seconds (mechanical load)

 

<18 seconds to READY (from Beginning of Tape)

 

 

Unload time

< 2 seconds (mechanical unload)

 

<10 seconds (plus rewind time to Beginning of Tape)

 

 

Recording Specifications

Recording method

Serpentine

 

 

Recording format

Travan 640

 

 

Recording code

VRR

 

 

Head configuration

Wide write/narrow read

 

 

Recording media

1650-Oe750' Travan 40 or 40 Gbytes (20 Gbytes native)

 

 

Cartridge size

3.2 in. × 2.4 in. × 0.4 in. (81 mm × 61 mm)

 

 

Data density

192,000 bits per inch

 

 

Tracks

108 data tracks, one (1) directory track

 

 

Seagate Travan 40 Product Manual

Page 5

Chapter 2

Specifications

Physical specifications

The physical specifications of the STT3401A and STT2401A are listed in the following table.

Specification

Drive for 3.5-inchmount

Drive for 5.25-inchmount

 

 

 

Height

1.0 in / 25.4 mm

1.625 in (max) / 41.3 mm

 

 

including bezel

 

 

 

Width

4.0 in / 101.6 mm

5.875 in / 149.2 mm

 

 

including bezel

 

 

 

Length

6.4 in (max) / 161.5 mm

6.5 in (max) / 165.1 mm

 

 

including bezel

 

 

 

Weight

1.0 lbs / 0.45 kg

1.6 lbs / 0.72 kg

 

 

 

Figures 4 and 5 show the general dimensions of the 3.5-inchSTT3401A (without mounting brackets) and the5.25-inchSTT2401A (with mounting brackets).

Figure 4

STT3401A (3.5-inchmount) general dimensions

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Seagate Travan 40 Product Manual

Specifications

 

Chapter 2

 

 

 

 

 

 

Figure 5

STT2401A (5.25-inchmount) general dimensions

Power supply specifications

The following table lists the power supply requirements for the Travan 40 drives. Power specifications are measured at the tape drive power connector and are nominal values.

Current and power requirements

Specification

Power supply requirement

 

 

 

 

+12V DC supply

+5V DC supply

 

 

 

Voltage tolerance

±10%

±5%

 

 

 

Current requirements Seek Load/unload Capstan startup Standby

0.8 amps rms

0.8 amps rms

0.8 amps rms

0.6 amps rms

2.0 amps rms (<200 ms)

1.0 amps rms

0.03 amps rms

0.5 amps rms

Ripple (peak to peak)

200 mV max

200 mV max

 

 

 

Seagate Travan 40 Product Manual

Page 7

Chapter 2

 

Specifications

 

 

 

 

 

 

Power use

9.6 watts

4.0 watts

 

Seek

 

Load/unload

9.6 watts

3.0 watts

 

Capstan startup

38 watts

6.0 watts

 

Standby

0.4 watts

2.3 watts

 

 

 

 

 

 

 

 

 

Power connector

The following table lists pin assignments for the power connector for the drive.

Pin

Assignment

 

 

1

+12V DC

 

 

2

+12 return

 

 

3

+5 return

 

 

4

+5V DC

 

 

Environmental requirements

The following table lists the environmental specifications for the Seagate STT2401A and STT3401A. All specifications apply to the drive mechanism unless otherwise noted.

Specification

Operational

Non-operational

 

 

 

Temperature

+41°to +104°F

–40°to +149oF

Drive

(+5° to +40°C)

(–40°to +65oC)

Cartridge at baseplate

+41°to +134°F

 

 

(+5° to +57°C)

 

 

 

 

Thermal gradient

 

5°C per hour

 

 

(18° F per hour)

 

 

 

Relative humidity

20% to 80%

5% to 95%

 

non-condensing

non-condensing

 

 

 

Maximum wet bulb temperature

78.8°F (26°C)

No condensation

 

 

 

Altitude

–1,000to +15,000 feet

–1,000to +50,000 feet

 

(–305to 4,572 meters)

(–305to 15,240 meters)

 

 

 

Vibration:

0.005 in. max.

0.1 in. max.

Peak to peak displacement

 

(5 to 54 Hz)

(5 to 17 Hz)

Peak Acceleration

0.75 G rms

1.5 G rms

(54 to 500 Hz)

(17 to 500 Hz)

 

 

 

 

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Seagate Travan 40 Product Manual

Specifications

 

Chapter 2

 

 

 

 

 

 

Shock (1/2 sine wave)

7Gs peak, 11 msec

50 Gs peak, 11 msec

 

 

(retries may be occur)

 

 

 

 

 

 

 

 

Acoustic level operational

55 dBA maximum

 

(A-wtsum)

(measured at operator

 

 

 

 

position, per ISO 7779)

 

 

 

 

 

 

 

 

Shock (1/2 sine wave)

2.5 Gs peak, 11 msec

100 Gs peak, 11 msec

 

 

 

 

 

Reliability

The STT3401A is designed for maximum reliability and data integrity. The following table summarizes the reliability specifications.

Feature

Specification

 

 

Non-recoverable(hard) error rate

< 1 in 1017 bits

 

 

Correctable (soft) error rate

< 1 in 107 bits

 

 

Error recovery and control

Write Equalization;

methods

Data Randomization;

 

Retry on read;

 

Reed-SolomonError Correction Code

 

 

Mean-Time-Between-Failures

More than 200,000 hours (20% duty rate)

(MTBF)

 

 

 

Mean-Time-To-Repair(MTTR)

Less than 0.5 hour

 

 

Mean-Time-Between-Failures

The Mean-Time-Between-Failures(MTBF) is greater than 250,000 hours. This specification includes allpower-onand operational time but excludes maintenance periods. Operational time is assumed to be 20% of thepower-ontime. Operational time is the time the tape is loaded.

Note: Seagate does not warrant the stated MTBF as representative of any particular unit installed for customer use. The failure rate quoted here is derived from a large database of test samples. Actual rates may vary from unit to unit.

Mean-Time-To-Repair

The Mean-Time-To-Repair(MTTR) is the average time required by a qualified service technician to diagnose a defective drive and install a replacement drive. The MTTR for the drive is less than 0.5 hour (30 minutes).

Seagate Travan drives are field-replaceable.If a problem occurs with a subassembly or component in the drive, the entire unit should be replaced. The faulty drive should

Seagate Travan 40 Product Manual

Page 9

Chapter 2

Specifications

be returned to the factory in its original packaging. Contact your distributor, dealer, your computer system company, or your Seagate sales representative to arrange the return.

Tape compatibility

The table below summarizes the types of tape cartridges that can be used with the Seagate Travan 40 drives. All other tape formats are incompatible. The Travan 40 drives can read any NS20 or Travan 5 cartridge written per the QIC-3220-MCstandard. Travan 40 cartridges used by the drive must be preformatted in accordance with theQIC-180standard.

Note. If Travan tapes are magnetically erased, they cannot be reformatted and become unusable.

 

Capacity*

Length

Seagate part

Cartridge format

(Gbytes)

(feet)

number

 

 

 

 

Travan 40

40

750

STTM40

 

 

 

 

Travan NS20

20

740

STTM20

 

 

 

 

Travan 5 (QIC-3220-MC)

20

740

STTM20

*Note. The capacities shown above are based on 2:1 data compression. Uncompressed values are one half as high. Capacities, backup speeds and transfer rates will vary with file type and system configuration.

Regulatory compliance

The Seagate Travan 40 drive 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-22)

Class B

with additional CE-Marktest requirements

 

 

 

FCC

Class B, Part 15

 

 

Use these drives only in equipment where the combination has been determined to be suitable by an appropriate certification organization (for example, Underwriters Laboratories Inc. or the Canadian Standards Association in North America). You should also consider the following safety points.

Page 10

Seagate Travan 40 Product Manual

Specifications

Chapter 2

Install the drive in an enclosure that limits the user's access to live parts, gives adequate system stability, and provides the necessary grounding for the drive.

Provide the correct voltages (+5V DC and +12V DC) based on the regulation applied—ExtraLow Voltage (SEC) for UL and CSA and Safety Extra Low Voltage for BSI and VDE (if applicable).

Installation

3

 

 

This chapter explains how to install the Seagate STT3401A and STT2401A drives. It also describes how to set the master/slave jumpers and presents details of the drive's power and ATAPI interface connectors.

Before you begin

Handling guidelines

Because the drive's electronic components can be damaged by electrostatic discharge, use an electrostatic grounding strap when handling the drive. This strap prevents an electrostatic discharge from damaging the electronic components on or in the drive unit.

If you do not have an electrostatic grounding strap, perform the installation at a static-safeworkstation. If one is not available, follow these guidelines as you install the drive unit:

Work in an uncarpeted area.

To protect the drive from static electricity, DO NOT remove the drive from its anti-staticbag until you are ready to install it.

Before you remove the drive from the anti-staticbag, touch a metal or grounded surface to discharge any static electricity buildup from your body.

Caution: If you touchstatic-sensitiveparts of the drive (such as the printed circuit board) electronic components may be damaged.

Hold the drive by the edges only. Avoid direct contact with any printed circuit board.

Lay the drive only on top of its anti-staticbag or return the drive to its bag when you need to lay the drive down.

Setting jumpers

In ATAPI systems, where two devices attached to a single interface cable, one of the drives must be configured as "master" and the other must be configured as "slave." In some cases, the assignment of master and slave can be made using a special cable, as long as the devices provide a "cable select" setting.

Seagate Travan 40 Product Manual

Page 11

Chapter 4

Drive operation and maintenance

Before installing the Seagate Travan 40 drive make sure that the jumpers are properly configured for your system. Figure 6 shows the location of the jumper block, as well as master/slave jumper settings for various configurations.

Note: Record your jumper settings prior to installation. The jumpers are not visible after the drive has been installed.

Figure 6

Jumper block settings for STT3401A and ST2401A

These jumper settings are explained in further detail below.

Jumpers 1 and 2 are reserved for factory use. Do not install a jumper on these pins.

Cable Select: When the CSEL jumper is off, the device address (Master or Slave) is determined by the setting of the "Master" jumper. When the CSEL jumper is on, the Master jumper is ignored and the device address is defined by the CSEL signal in the Host cable. If CSEL is tied to ground, the device address is Device 0 (Master). If the signal is tied high (or open), the device address is Device 1 (Slave).

Master/Slave: When this jumper is on, drive will act as Master on the ATA port. An ATAPI device cannot be a Master to an ATA device, only other ATAPI devices. If there is no jumper on the Master or CSEL jumper blocks, the drive is configured as a slave. See table below:

"CSEL"

"Master"

 

jumper block

jumper block

Drive's master/slave setting

 

 

 

Off

On

Device is Master (Device 0)

 

 

 

Off

Off

Device is Slave (Device 1)

 

 

 

On

On or Off

Device is Master or Slave depending

 

 

on CSEL signal level

 

 

 

Page 12

Seagate Travan 40 Product Manual