Seagate Elite 47 ST446452W Product Manual

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Elite 47 Disc Drive

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST446452W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Manual, Volume 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Elite 47 Disc Drive

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST446452W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Manual, Volume 1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

© 1998 Seagate Technology, Inc. All rights reser ved

Publication number: 83329280, Rev. A

February 1998

Seagate , Seagate Technology, and the Seagate logo are registered trademarks of Seagate T ech­nology, Inc. Elite, SeaFAX, SeaFONE, SeaNET, SeaTDD , and SeaBOARD are either trademarks
or registered trademarks of Seagate Technology, Inc. or one of i ts subsidiaries. All ot her trade­marks or registered trademarks are the property of their respective owners.

No part of this publication may be reproduced in any form without written permission from

Seagate Technology, Inc.

Printed in the United States of America

Revision status summary sheet

This manual is volume 1 of a two-volume document with the SCSI interface information in the volume 2

SCSI Interface Product Manual

, part number 77738479.

If you need SCSI interface information, order the volume 2

SCSI Interface Product Manual

, part numbe r

77738479.

Revision Date Writer/Engineer Sheets Affected

A 01/09/98 L. Newman/B. Rathe All

Elite 47 Product Manual, Rev. A v

Contents

1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Electromagnetic compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.3 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.0 General descr iption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1 Standard features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2 Media characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.5 Unformatted and formatted capacit ies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.6 Programmable drive capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.7 Factory installed accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.8 Options (factory installed). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.9 Accessories (user installed). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.0 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Internal drive characteristics (transparent to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 SCSI seek performance characteristics (visible to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2.1 Access time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2.2 Format command execution time (for ≥ 512-byte sectors). . . . . . . . . . . . . . . . . . . . 9

4.2.3 General performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.3 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.4 Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.5 Cache operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.5.1 Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.5.2 Prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.0 Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.1 Environmental interference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.2 Read errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.3 Write errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1.4 Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2 Reliability and service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6

5.2.1 Mean time bet ween failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2.2 Preve ntive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.3 Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.4 Service philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.5 Service tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.6 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.7 Product warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.0 Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.1 AC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2 DC power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.1 Conduct ed noise immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2.2 Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2.3 12 V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.3 Power dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4 Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

vi Elite 47 Product Manual, Rev. A

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.4.7 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

6.5 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

7.0 Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

7.1 Drive internal defects and errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

7.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

8.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.1 Drive ID/option select header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.1.1 Notes for Figure 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

8.2 Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

8.3 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

8.3.1 Air flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

8.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

8.5 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6

9.0 Interface requiremen ts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1 General description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.2 SCSI interface messages supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.3 SCSI interface commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

9.3.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

9.3.2 Mode Sense data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

9.4 SCSI bus conditions and miscellaneous features supported . . . . . . . . . . . . . . . . . . . . . . . . .44

9.5 Synchronous data trans fer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.5.1 Synchro nous data transfer periods supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.5.2 REQ/ACK offset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.6 Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.6.1 DC cable and connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.6.2 SCSI interface physical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

9.6.3 SCSI interface cable requiremen ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

9.6.4 Mating connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

9.7 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.7.1 Single-ended drivers /receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.8 Terminator requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.9 Terminator power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.10 Disc drive SCSI timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

10.0 Seagate technical support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Elite 47 Product Manual, Rev. A vii

List of Figures

Figure 1. Elite 47 disc drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Elite 47 family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Typical Elite 47 drive +5 V and +12 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 4. Location of PCBA components listed in Table 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 5. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 6. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 7. Option select jumper connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 8. J4A connections for Activity, Fault, and Ready LED indicators . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 9. Suggested air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 10. Physical interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 11. SCSI daisy-ch ain interface cabling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 12. Non-shielded 68-pin SCSI device connect or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 13. Single-ended transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Elite 47 Product Manual, Rev. A 1

1.0 Scope

This manual describes Seagate Technology®, Inc. Elite 47™ disc drives.
Elite 47 drives support the small computer system interface (SCSI) as described in the ANSI SCSI, SCSI-2,

and SCSI-3 (Fast-20 or Ultra SCSI) interface specifications to the extent described in this manual. The

SCSI

Interface Product Manual

(part number 77738479) describes general SCSI interface characteristics of this and

other families of Seagate drives.
From this point on in this product manual the reference to Eli te 47 models is referred to as “the drive” (unless

references to individual models are necessary).

Figure 1. Elite 47 disc drive

Elite 47 Product Manual, Rev. A 3

2.0 Applicable standards and reference documentation

The drive is a system peripheral developed to the highest standards of design and construction. The dr ive
depends on its host equipment to provide adequ ate power and environment to achieve optimum performance
and compliance with applicable i ndustry and government regulations. Special attention must be given in the
areas of safety, power distr ibution, shieldin g, audible no ise cont rol, and temperature regulation. Also, the drive
must be securely mounted to guarantee the specified performance characteristics.

2.1 Standards

The Elite 47 family complies with Seagate standards as noted in the appropr iate sections of this manual and
the Seagate

SCSI Interface Product Manual

(volume 2), part number 77738479.

The Elite 47 disc drive is a UL recog nized component per UL1 950, CSA cert ified to CSA C22.2 No. 950-789,
and VDE certified to VDE 0805 and EN 60950.

2.1.1 Electromagnetic compatibility

The drive, as delivered, is designed f or s ystem integr ation and installation into a suitable enclosure prior to use.
As such, the drive is supplied as a su bassembly and is no t subject to S ubpar t B of Part 15 of t he FCC Ru les
and Regulations nor the Radio Interference Regulations of the Canadian Department of Communications.

The physical design characteristics of the dr ive serve to m inimize radiation when i nstal led in an enc losure that
provides reasonable shielding. As such, the drive is capable of meeting the Class B limits of the FCC Rules
and Regulations of the Canadian Depar tment of Communications when proper ly packaged. However, it is the
user’s responsibility to assure that the drive meets the appropriate EMI requiremen ts in their system. Shielded
I/O cables may be required if the enclosure does not provide adeq uate shielding. If the I/O cables are external
to the enclosure, shielded cables should be used, with the shields grounded both to the enclosure and to the
host controller.

2.1.1.1 Electromagnetic susceptibility

As a component assem bly, the drive is not required to me et any suscep tibility perform ance requi rements. It is
the responsibility of those integrating the dri ve within their systems to perform t hose t ests req uired a nd des i gn
their system to ensure that equipm ent operating in the same system as the drive or external to the system
does not adversely affect the perf ormance of the drive. S ee Section 5.1.1 and Table 1, DC power requirements.

2.2 Electromagnetic compliance

Seagate uses an independen t laboratory to confirm com pliance to the directives/standard(s) for CE Marking
and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected sys­tem represents the most popular characteristics for test platforms. The system configurations include:

• 486, Pentium, and PowerPC microprocessors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

•Mouse
Although the test system with this Seagate m odel com pli es to the direct ives/standard(s), we cannot guarantee

that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance
and provide CE Marking and C-Tick Marking for their product.

Electromagnetic compliance for the European Union

If this model has the CE Marking it complies with the European Union requirements of the Electromagnet ic
Compatibility Directive 89/336/EEC of 03 M ay 198 9 as amended by Directive 92/31/EEC of 28 April 1992 a nd
Directive 93/68/EEC of 22 July 1993.

4 Elite 47 Product Manual, Rev. A

Australian C-Ti ck

If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995
and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Man­agement Agency (SMA).

2.3 Reference documents

Elite 47 Installation Guide

Seagate P/N 83329290

SCSI Interface Product Manual

(Volume 2) Seagate P/N 77738479

ANSI small computer system interface (SCSI) document numbers:

X3.131-1994 SCSI-2

X3.253-1995 SCSI-3 Parallel Interface
Package Test Specification Seagate P/N 30190-001 (under 100 lb.)
Package Tes t Spe cification Seagate P/N 30191-001 (over 100 lb.)
In case of conflict between this document and any referenced document, this document takes precedence.

Elite 47 Product Manual, Rev. A 5

3.0 General description

Elite 47 drives combine magnetoresistive (MR) heads, partial response/maximum likelihood (PRML) read
channel electronics, embedded servo technology, and a SCSI-3 (Fast-20) interface to provide high perfor­mance, high capacity data storage for a variety of systems including engineering workstations, network serv­ers, mainframes, and supercomputers.

Fast-20 (also known as Ultra SCSI) is a negotiated transfer rate. This transfer rate will occur only if your host
adapter also supports Fast-20 data transfer rates. This drive also operates at SCSI-1 and SCSI-2 data transfer
rates for backward compatibility with non-Fast-20 capable SCSI host adapters.

This manual describes the Elite 47 model ST446452W. It has a 68-pin interface connector for a 16-bit data b us.
The drive records and recovers data on 5.25-inch (133.4 mm) non-removeable discs.
The drive supports the S mall Computer System Interface (SCSI) as describ ed in the ANSI SCSI-2 interface

specifications to the extent described in this manual (volume 1), which defi nes the product perform ance char­acteristics of the Elite 47 family of drives, and the

SCSI Interface Product Manual

(volume 2), par t number
77738479, which describes the general interface characteristics of this and other families of Seagate SCSI
drives.

The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and
automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets
(logical block addressing is used).

The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a non­replaceable filter to maintain a contamination-free HDA environment.

Refer to Figure 2 for an exploded view of the drive. This exploded view is for information only—never disassem­ble the HDA and do not attempt to service items in the sealed enclosure (heads, med ia, actuator, etc.) as this
requires special facilities. The drive contains no replaceable parts. Opening the HDA voids your warranty.

Elite 47 drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibi lity of
destroying or degrading data by landing in the data zone. The drive automatically goes to the landing zone
when power is removed.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur­ing shipping and handling. The shipping lock automati cally diseng ages when power is appli ed t o the drive and
the head load process begins.

Elite 47 drives decode track 0 location data from the servo data embedded on each surface to eliminate
mechanical transducer adjustments and related relia bilit y con ce rns.

A high-performance actuator assembly with a low-inertia, balanced, pa tented, straight-arm design provides
excellent performance with minimal power dissipation.

6 Elite 47 Product Manual, Rev. A

Figure 2. Elite 47 family drive

3.1 Standard features

Elite 47 drives have the following standard features:

• Integrated SCSI controller

• Single-ended SCSI drivers and receivers

• 16-bit I/O data bus

• Asynchronous and synchronous data transfer protocols

• Firmware downloadable using the SCSI interface

• Programmable drive capacity

• Selectable sector size from 512 to 4,096 bytes per sector

• Programmable sector reallocation scheme

• Flawed sector reallocation at format time

• Programmable auto write and read reallocation

• Reallocation of defects on command (post format)

• Reed-Solomon error-correction code for header and data fields; can correct up to 64-bit error

• Sealed head and disc assembly (HDA)

• No preventative maintenance or adjustment required

• Dedicated head landing zone

• Embedded servo data rather than a separate servo data surface

• Self-diagnostics performed when power is applied to the drive

• 1:1 interleave

• Zone bit recording (ZBR)

• Vertical, horizontal, or top-down mounting

Elite 47 Product Manual, Rev. A 7

• Dynamic spindle brake

• Active IC terminators enabled by jumper

• 4,096 Kbyte data buffer . See Section 4.5

3.2 Media characteristics

The media used on the dri ve has a diamet er of approximately 5.25 i nc hes (134 mm). The aluminum subst rate
is coated with a thin film magnetic material, overcoated with a proprietary protective layer for improved durabil­ity and environmental protection.

3.3 Performance

• Supports industry-standard Fast-20 SCSI interface (also called “Ultra SCSI”)

• Programmable multi-segmentable cache buffer

• 5,357 RPM spindle; average latency = 5.60 msec

• Command queuing of up to 64 commands

• Background processing of queue

• Supports start and stop commands (spindle stops spinning)

• Low audible noise for office environment

• Low power consumption

3.4 Reliability

• 800,000 hour MTBF

• LSI circuitry

• Balanced low mass rotary voice coil actuator

• Incorporates industr y -standa rd Self-Monitoring, Analysis and Repor ting Technology (S.M.A.R.T.)

• Incorporates Seek To Improve Reliability algorithm (STIR)

3.5 Unformatted a n d formatted capacities

Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per
sector. The following table shows standard OEM model capacities:

Notes.

[1] Standard OEM models a re formatted to have 512-byte sectors. Users having the necessar y equipment

may modify the data block size before issuing a f ormat command and obtain different formatted capacities
than those listed. User available capacity depends on spare reallocation scheme selected. See Mode
Select Command and Format Command in the

SCSI Interface Product Manual,

part number 77738479.

[2] The number of data tracks per sparing zone and the number of alternate sectors (LBAs) per sparing zone

can be determined by using the Mode Sense command and reading Mode page 03h.

3.6 Programmable drive capacity

Using the Mode Select command, the drive can change its capacity to something less than maximum. See
Table 5.2.1-13 in the

SCSI Interface Product Manual

, part number 77738479 . Refer to the Parameter list block
descriptor number of blocks field. A value of zero in the number of blocks field indicat es that the dri ve will not
change the capacity it is currently formatted to have. A number in the number of blocks field that is less than
the maximum number o f LBAs chan ges the tot al drive capacity to the value in the block de scriptor num ber of
blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.

3.7 Factory installed accessories

The

Elite 47 Installation Guide

, part num ber 83329290, is shipped with each standard OE M drive (unless oth­erwise specified). A small bag of jumpers are also s hipped with the dr ive. Use these jumpers to configure the
option headers. See Section 8.1.

SCSI terminators can be enabled or disabled.

Formatted [1] Unformatted

ST446452 47.0 Gbytes [2] 62.6 Gbytes

8 Elite 47 Product Manual, Rev. A

3.8 Options (factory installed)

All options that a cus t om er m ay request are i nc orporated during production or packaged at the manufacturing
facility before shipping. Some of the options available are:

• The capacities shown in Section 3.5. You can order other capacities by selecting other sparing schemes and
sector sizes.

• Single-unit shipping pack. The drive normally ships in bulk packaging to provide maximum protection against
transit damage. Units shipped i ndividually require additional protection as provided by the si ngle-unit ship­ping pack. Specify this option if you are planning to ship single units to your customers.

•The

Elite 47 Installation Guide

, part number 83329290, is usually included wi th each standard OEM dr ive.

Additional copies may be ordered.

3.9 Accessories (user installed)

The following accessories are available.

• Single-unit shipping pack.

Elite 47 Product Manual, Rev. A 9

4.0 Performance characteristics

4.1 Internal drive characteristics (transparent to user)

[1] Rounded off values

4.2 SCSI seek performance characteristics (visible to user)

Refer to Section 9.10 and to the

SCSI Interface Product Manual

(part number 77738479 ) for additional timing

details.

4.2.1 Access time

4.2.2 Format command execution time (for ≥ 512-byte sectors)

4.2.3 General performance characteristi cs

Data buffer data transfer rate to/from disc media (one 512-byte sector) variable with zone/cylinder:

SCSI interface data transfer rate (asynchronous) [5]:

Maximum instantaneous (1-byte-wide transfer rate) 5. 0 Mbytes/sec [6]
Maximum instantaneous (2-byte-wide transfer rate) 10. 0 Mbytes/sec [7]

Synchronous transfer rate for SCSI Fast-20 (Ultra SCSI):

16 bit data bus 5.0 to 40 Mbytes/sec

[] All notes for Sections 4.2 are listed at end of Section 4.2.3.

ST446452

Drive capacity 62.6 Gbytes (unformatted) [1]
Read/write heads 28
Bytes/track 223,855 Bytes (average, unformatted) [1]
Bytes/surface 2,238 Mbytes (unformatted)
Tracks/surfa ce, total 9,996 Tracks (user accessible)
Tracks/inch 8,334 TPI
Peak bits/inch 178,847 BPI
Internal data rate 125-185 Mbits/sec (variable with zone)
Disc rotational speed 5,357 ± 0.5% r/min
Average rotational latency 5.60 msec

Including controller overhead
(without disconnect) [1] [4]

Drive level

Read Write

ms

Average Typical [3] 13.2 14.2
Single track Typical [3] 1.3 2.3
Full stroke Typical [3] 28.2 28.2

Maximum (with verify) 10.0 hours
Maximum (no verify) 6.0 hours

Minimum sector interleave 1 to 1

Minimum [4] 125 Mbits/sec
Maximum [4] 185 Mbits/sec

10 Elite 47 Product Manual, Rev. A

Synchronous transfer rate for fast SCSI-2:

16 bit data bus 5.0 to 40 Mbytes/sec

Sector sizes:

Default 512-byte data blocks

Variable in even-sector sizes 512 to 4,096 bytes per sector
Read/write consecutive sectors on a track Yes
Flaw reallocation performance impact :

For flaws reallocated at format time using spare

sectors per track reallocation scheme negligible

For flaws reallocated after format time using spare

sectors per cylinder reallocation scheme 11.1 msec (minimum)

22.2 msec (maximum)
For flaws reallocated after format time using spare
tracks per volume reallocation scheme 35 msec (typical)

Overhead time for head switch (512-byte sectors)
in sequential mode 0.8 msec

Overhead time for one track cylinder switch
in sequential mode 1.2 msec (typical)

Aver age rotational latency 5.60 msec

Notes for Sections 4.2.

[1] Execution time is measured from receipt of the last byte of the Command Descriptor Block (CDB) to the

request for a status byte transfer to the initiator (excluding connect/disconnect).

[2] Maximum times are specified over the worst case conditions of temperature, voltage margins and dr ive

orientation. When comparing specified access times, take care to distinguish between typical access
times and maximum access times. Obtain the best comparison by conducting system benchmar k tests
under identical conditions. Maximum times do not include error recovery.

[3] Typical acce ss times are meas ured under nom inal conditions of tempe rature, voltage, and horizontal ori-

entation as measured on a representative sample of drives.
[4] Assumes no errors and no sector reallocations.
[5] Rate measured from the start of the first sector transfer to or from the host.
[6] Assumes system ability to support the 1-byte-wide transfer rate listed and no cable loss.
[7] Assumes system ability to support the 2-byte-wide transfer rate listed and no cable loss.

Elite 47 Product Manual, Rev. A 11

4.3 S tar t/st op time

Disabling the Motor Start option causes the drive to become ready within 45 seconds after DC power is applied
at nominal voltage. This means the motor starts as soon as power is applied. If a recoverable error condition is
detected during the start sequence, the drive will execute a recovery procedure and may cause the time to
become ready to exceed 45 seconds. During this time the drive responds to some commands over the SCSI
interface. Stop time is less than 40 seconds from removal of DC power.

Enabling the Motor Start option causes the internal controller to accept the commands listed in the

SCSI Inter-

face Product Manual

(77738479) less than 3 secon ds after applying DC power. After receiving the Motor Star t
command, the drive becomes ready for normal operations within 45 seconds (excluding an error recovery pro­cedure). The Motor Start command can also b e used t o comm and t he drive to stop the spindle in less than 40
seconds (see the Start/Stop com man d informat ion in the

SCSI Interface Product Manual).

There is no power control switch on the drive.

4.4 Prefetch/multi-segmented cache control

The drive provides prefetch (read look-ahead) and multi-segmented cache control algorithms that in many
cases can enhance system performance. “Cache” as used herein refers to the drive buffer storage space when
it is used in “cache” operat ions. To sele ct prefetch and cache features the hos t sends the Mo de Select com­mand with the proper values in the applicable bytes in Mode Page 08h (see

SCSI Interface Product Manual

).
Prefetch and cache operation are in dependent features from the standpoin t that eac h is enabled and disabled
independently via the Mode Select command. However, in actual operation the prefetch f eature o verlaps cache
operation somewhat as is noted in Section 4.5.1 and 4.5.2.

All default cache and prefetch Mode parameter values (Mode Page 08h) for standard OEM versions of this
drive family are given in Table 7.

4.5 Cache operation

Of the 4,096 Kbytes physical buffer space, approximately 3,442 Kbytes can be used as a cache. The cache
can be divided into logical segments (M ode Select page 08h, byte 13) from which data is read and to wh ich
data is written.

The drive keeps track of the logical block addresses of the data stored in each segment of the cache. If the
cache is enabled (see RCD bit = 0 in Mode page 08h, byte 2, bit 0 in the

SCSI Interface Product Manual),

data
requested by the host with a read command is retrieved from the cache, if possible, before any disc access is
initiated. If cache operation is not enabled, the buffer (still segmented with required number of segments) is still
used, but only as circular buffer segments during disc medium read operations (disregarding P refetch opera­tion for the moment). That is, the drive does not check in the buffer segments for the requested read data, but
goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on
the way to the host. On a cache “miss,” all data transfers to the host are in accordance with “buffer-full” ratio
rules. On a cache “hit,” the drive ignores the “buffer-full” ratio rule s. See explanations a ssocia ted with Mode
page 02h (disconnect/reconnect control) in the

SCSI Interface Product Manual

.
The following is a simplified description of a read operation with cache operation enabled:
Case A - Read command is received and the first logical block is already in the cache.

1. Drive transfers to the initiator the first logical block requested plus all subsequent contiguous logical blocks

that are already in the cache. This data may be in multiple segments.

2. When a requested logical block is reached that i s not in a ny segment , the drive fetches it and any remain-

ing requested logical block addresses from the disc and puts them in a segm ent of the cache. The dr ive
transfers the remaining requested logical blocks from the cache to the initiator in accordance with the
“buffer-full” ratio specification given in Mode Select Disconnect/Reconnect parameters, page 02h (see the

SCSI Interface Product Manual).

3. The drive prefetches additional logical blocks contiguous to those transferred in step 2 above and stores

them in the segme nt. The drive stops filling the segment when the maximum p refetch value has been
transferred (see the

SCSI Interface Product Manual).

12 Elite 47 Product Manual, Rev. A

Case B - Read command is received and the first logical block address requested is not in any segment of the

cache.

1. The drive fetches the reques ted logical blocks from the disc and transfers them into a s egm ent, then from
there to the initiator in accordance with the “buffer-full” ratio specification given in Mode Select Disconnect/
Reconnect parameters, page 02h (see the

SCSI Interface Product Manual)

.

2. The drive prefetches additional logical blocks contiguous to those transferred in Case A, step 2 above and
stores th em in the segm ent. The drive s tops filling the segment wh en the maximum prefetch value has
been transferred.

During a prefetch, the drive crosses a cylind er bound ary to fetch data only if the Dis continuity (DISC) bit is s et
to 1 in bit 4 of byte 2 of the Mode Select parameters page 08h. Default is zero for bit 4 (see the

SCSI Interface

Product Manual).

Each buffer segment is actually a self-contained circular storage (wrap-around occurs), the length of which is
an integer number of disc medium sectors. The wrap-around capability of the individual segments greatly
enhances the buffer’s ov erall performance as a cache storage, allowing a wide range of user selectable config­urations, which includes their use in the prefetch operation (if enabled), even when cache operation is disabled
(see Section 4.5.2). The number of segm ents may be selected using the Mode Select com mand, but the size
cannot be directly selected. Size is selected only as a by-product of selecting the segment number specifica­tion. The size in Kbytes of each segment is not reported by the Mode Sense command page 08h, bytes 14 and

15. These bytes read 0xFF FF, rega rdless of the num ber of seg ments setting. If a size spec ification is se nt by

the host in a Mode S elect comm and (bytes 14 and 1 5) no n ew segment size is set up by the dr ive, and if the
“STRICT” bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to
change unchangeable parameters (see

SCSI Interface Product Manual).

The dr ive support s operation of any
integer number of segments from 1 to 16. Divide the 3,442 Kbytes in the buffer by the number of segments to
calculate the segment size. The default is three segments.

4.5.1 Caching write data

When the WCE (Write Cache Enable) bit is enabled, the drive uses a dr ive buffer storage area where the data
to be written to the drive is stored in one or more segments while the drive performs the Write command. The
write cache uses the same buffer space and segmentation as the read cache. The buffer segmentation
scheme is set up or changed independently, having nothing to do with whether or not read and write caching is
enabled or disabled.

If a 10-byte CDB write command (2 Ah) is iss ued wi th the DPO (Dat a Page Out) bit set to one, no wri te data is
cached but the cache segm ents are still checked and cleared (if nee ded) for any logical blocks that are being
written.

When a write command is issued, the cache is first checked to see if any logical blocks that are to be written
are already stored in the cache from a previous read or write command. If there are, the respective cache seg­ments are cleared. The new data is cached for subsequent read commands.

If the number of write data logical blocks exceeds the size of the segment being written into when the end of
the segment is reached, the data is written into the beginning of the same cache segment, overwriting the data
that was written there at the beginning of the operation. Howev er, the drive does not overwrite data that has not
yet been written to the disc.

Table 7 shows Mode default settings for the drives.
Note. The WC E bit is disabled by default on OEM drives. To enable the WCE bit, change Mode Sense Page

08h, byte 2, bit 2 to a value of 1.

4.5.2 Prefetch operation

If the Prefetch feature is enabled, data in contiguous logical blocks on the disc i mmediately beyond that which
was requested by a read command can be retrieved and stored in the buffer for immediate transfer from the
buffer to the host on subsequent read comman ds that request those logical blocks (this is true even if “cache”
operation is disabled). Though the prefetch operation uses the buffer as a “cache,” finding the requested data
in the buffer is a prefetch “hit,” not a “cache” operation “hit.” Prefetch is enabled using Mode Select page 08h,
byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch. Since data that is prefetched
replaces data already in some buffer segment(s), the host can limit the amount of prefetch data to optimize

Elite 47 Product Manual, Rev. A 13

system performance. The max prefetch field (bytes 8 and 9) limits the am ount of prefetch. The drive does not
use the prefetch “ceiling” field (byt e s 10 and 11).

During a prefetch operation, the drive crosses a cylinder bo undary to fetch more data only if the Di scontinuity
(DISC) bit is set to one in bit 4 of byte 2 of Mode parameters page 08h.

Whenever prefetch (read look-ahead) is enabled (enabled by DRA = 0), it operates under the control of ARLA
(Adaptive Read Look-Ahead). If the host uses software interleave, A RLA enables prefetch of contiguous blocks
from the disk when it senses t hat a prefetch “hit” w ill l ikely occu r, even if two consecutive read operations were
not for phy sically contiguous bloc ks of data (e .g. “software interleav e”). ARLA disables prefetch when it decides
that a prefetch “hit ” w ill not likely o ccur. If the h ost is not using software int er leave, and if two sequenti al re ad
operations are not for contiguous blocks of data, ARLA disables prefetch, but as long as sequential read oper­ations request contiguous blocks of data, ARLA keeps prefetch enabled.

Elite 47 Product Manual, Rev. A 15

5.0 Reliability specifications

The following reliability specifications assume correct host/drive operational interface, including all interface
timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 8.4).

Note.

[1] Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.

5.1 Error rates

The error rates stated in this specification assume the following:

• The drive is operated per this specification using DC power as defined in this manual (see Section 6.2).

• The drive has been formatted with the SCSI format commands.

• Errors caused by media defects or host system fail ures are excluded from error rate computations. Refer to
Section 7.0, “Defect and Error Management.”

• Data is random.

5.1.1 Environmental interference

When evaluating systems operation under conditions of Electromagnetic Interference (EMI), the performance
of the drive within the system is c onsidered acceptable if the dri ve doe s not generate an unrecoverable condi­tion.

An unrecoverable error, or condition, is defined as one that:

• is not detected and corrected by the drive itself;

• is not capable of being detected from the error or fault status provided through the drive or SCSI interface; or

• is not capable of being recovered by normal drive or system recovery procedures without operator interven­tion.

5.1.2 Read errors

Before determination or measurement of read error rates:

• The data that is to be used for measurement of read error rates must be v erifi ed as being written correctly on
the m edia.

• All media defect induced errors must be excluded from error rate calculations.

5.1.3 Write erro rs

Write errors can occur a s a result of media defects, environmental interference, or equipment malfunc tion.
Therefore, write errors are not predictable as a function of the number of bits passed.

If an unrecoverable write error occurs because of an equipment malfunction in the drive, the error is classified
as a failure affecting MTBF. Unrecoverable write errors are those which cannot be corrected within two
attempts at writing the record with a read verify after each attempt (excluding media defects).

Seek errors Less than 10 in 10

8

seeks

Read error rates [1]

Recovered data Less than 10 errors in 10

11

bits transferred (OEM default settings)

Unrecovered data Less than 1 sector in 10

14

bits transferred (OEM default settings)

Miscorrected data Less than 1 sector in 10

21

bits transferred
MTBF 800,000 hours
Serv ic e life 5 years
Preventive maintenance None required

16 Elite 47 Product Manual, Rev. A

5.1.4 Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. There should not
be more than 10 recoverable seek errors in 10

8

physical seek operations. After detecting an initial seek e rror,
the drive automatically performs an e rror recovery proces s. If the error recovery proce ss fails, a seek position­ing error (15h) is reporte d with a Medium (3h) or Hardware error (4h) repor ted in the Sense Key. This is an
unrecoverable seek error. Unrec overable seek errors are classified as failures for MTBF calculations. Refer to
Section 5.1.1.4 of

SCSI Interface Product Manual

(part number 77738479).

5.2 Reliability and service

You can enhance th e reliability of Elite 47 disc drives by ensuring that the drive receives adequate cooling.
Section 6.4.1 provides temperature measurements and other information that may be used to enhance the ser­vice life of the drive. Section 8.3.1 provides recommended air-flow information.

5.2.1 Mean time between failure

The production disc drive has a mature MTBF of 800,000 hours. MTBF includes failures in the time period from
manufacturing installation to the end of product life.

The mean time between failure target is specified as device power-on hours (POH) for all drives in service per
failure using the following equation:

MTBF is based on the following assumptions:

• 8,760 power-on hours per year.

• 250 average on/off cycles per year.

• Read/seek/write operation 20% of POH.

• Operations at nominal voltages.

• Systems provide adequate cooling to ensure the case temperatures specified in Tab le 2 and Figure 4 are not

exceeded. Short ter m excursions up to the specification limits of the operating environment will not affect
MTBF performance.

A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered
an MTBF hit.

Drive failure means any stoppage or substandard performance caused by drive malfunction.
Data is calculated on a rolling average base for a minimum period of six months.

Field failure rate vs time

The maximum allowable field failure rate is listed below. Drive utilization will vary . An estimated range of utiliza­tion is:

• 720 power-on hours (POH) per month.

• 250 on/off cycles per year.

• Read/seek/write operation 20% of POH.

• Systems provide adequate cooling to ensure the case temperatures specified in T ab le 2 and Figure 4 are not

exceeded. Short ter m excursions up to the specification limits of the operating environment will not affect
MTBF performance.

Failure rate in parts per million

The failure rate is calculated as follows:

• No system-induced failures counted.

• Parts per million (PPM) targets include 30% no defect found and 0% handling failures.

• Based on 800,000 MTBF and 720 POH per month.

MTBF =

Estimated power-on hours (POH) in the period

Number of failures in the period

Elite 47 Product Manual, Rev. A 17

• Month 1 rate includes a 300 PPM installation failure factor.

5.2.2 Preventive maintenance

No routine scheduled preventive maintenance shall be required.

5.2.3 Service life

The drive has a useful service life of 5 years. Depot repair or replacement of major parts is permitted during the
lifetime (see Section 5.2.4).

5.2.4 Servi c e philosophy

Special equipment is required to repair the drive HDA. To achieve the 5-year service life, repairs must be per­formed only at a properly equipped and staffed service and repair facility. Troubleshooting and repair of PCBAs
in the field is not recommended because of the extensive diagnostic equipment required for effective servicing.
Also, there are no spare parts available for this drive. The drive warranty is voided if the HDA is opened.

5.2.5 Service tools

No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.4.
The depot repair philosophy of the drive precludes the necessity for special tools. Field repair of the drive is not
practical because users cannot purchase individual par ts for the drive.

Month PPM

12,459
21,615
31,594
41,580
51,497
61,426
71,320
8+ 1,200

18 Elite 47 Product Manual, Rev. A

5.2.6 S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Monitor ing Analysis and Re por ting Technology. This tec hnology is intended
to recognize conditions that indicate a drive failure and is designed to provide sufficient warning of a failure to
allow data back-up before an actual failure occurs.

Note. The firmware will monitor specific attributes for degradation over time but cannot predict instantaneous

drive failures.

Each attribute has been selecte d to m onitor a spec ific s et of failure conditions in th e operat ing pe rformanc e of
the drive, and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT bit and the PERF bit of the “Informational
Exceptions Control Mode Page” (1Ch). The DEXCPT bit i s used to e nable or disable the S.M.A.R.T. process.
Setting the DEXCPT bit will disable all S.M.A.R.T. functions. When enabled, S.M.A.R.T. will collect on-line data
as the drive performs normal read/write operations. When the PERF bit is set, the drive is considered to be in
“On-line Mode Only” and will not perform off-line functions.

The process of measuring of f-line attributes and saving data can be forced by the RTZ command. Forcing
S.M.A.R.T. will reset the timer so that the next scheduled interrupt will be two hours.

The drive can be interrogated by the host to determine the time remaining before the next scheduled measure­ment and data logging process will occur. This is accomplished by a log sense command to log page 0x3E.
The purpose is to allow the customer to control when S.M.A.R.T. interruptions occur. As described above, forc­ing S.M.A.R.T by the RTZ command will reset the timer.

Performance impact

S.M.A.R.T. attribute data will be saved to the disc for the purpose of recreating the events that caused a predic­tive failure. The drive will measure and save parameters once every two hours subject t o an idle period on the
SCSI bus. The process of measuring off-line attribute data and saving data to the disc is uninterruptable and
the maximum delay is summarized below:

Maximum processing delay

On-line only delay Fully enabled delay

S.M.A.R.T. delay times 100 millisecond s 800 m il liseconds

Repor tin g c on t rol

Reporting is controlled in the “Informational Exceptions Control Page” (1Ch). Subject to the reporting method,
the firmware will issue to the “host” an 01-5D00 sense code. The error code is preserved through bus resets
and power cycles.

Determining rate

S.M.A.R.T. monitors the rate at which e rrors occ ur an d s ig nals a predictive failure if the rate of degraded error
rate increases to an unacceptable level. To deter m ine rate, error events are logged and compared to the num ­ber of total operations for a given attribute. The interval defines the number of operations over which to mea­sure the rate. The counter that keeps track of the current number of operations is referred to as the Inter val
Counter.

S.M.A.R.T. measures error rate, hence for each attribute the occurrence of an “error” is recorded. A counter
keeps track of the number of errors for the current interval. This counter is referred to as the Failure Counter.

Error rate is simply the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of
error is to set thresholds for t he number of errors and the interval. If the number of errors exceeds the threshold
before the interval expires, then the error rate is considered to be unacceptable. If the number of errors does
not exceed the threshold before the interval expires, then the error rate is considered to be acceptable. In either
case, the interval and failure counters are reset and the process starts over.

Elite 47 Product Manual, Rev. A 19

Predictive failures

S.M.A.R.T. signals predi ctive failures when the drive is p erforming unacceptably for a period of t ime. The firm­ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accom­plish this, a counter is incremented whenever the error rate is unacceptable and decremented (not to exceed
zero) whenever the error rate is acceptable. Should the counter continually be incremented such that it reaches
the predictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History
Counter. There is a separate Failure History Counter for each attribute.

5.2.7 Product warranty

Beginning on the date of s hipment to custom er and con tinuing for a period of t ime specified i n the Standard
Term s and Conditions of Purchase for Seagate products, Seagate warrants that each product (including com­ponents and suba ssemblies) or spare part that fails to function properly under normal use due to defect in
materials on workmanship or due to nonconformance to the applicable specifications will be repaired or
replaced, at Seagate’s option and at no charge to customer, if returned by customer at customer’s expense to
Seagate’s designated facility in accordance with Seagate’s W arranty Procedure. Seagate will pay for transport­ing the repair or replacement item to customer. For more detailed warranty information, refer to the Standard
Term s and Conditions of Purchase for Seagate products.

Shipping

When transpor ting or shipping a drive, a Seagate approved container must be us ed. Keep your original box.
They are easily identified by the Seagate App roved Packag e label. Shipping a drive in a non-approved con­tainer voids the drive warranty .

Seagate repair centers may refuse recei pt of components improper ly packaged or obviously dam aged in tran­sit. Contact your Authorized Seagate Distributor to purchase additional boxes. Seagate recommends shipping
by an air-ride carrier experienced in handling computer equipment.

Product repair and return information

Seagate customer service cent ers are the only facilities authorized to service Seagate drives. Seagate does
not sanction any third-party repair facilities. Any unauthorized repair or tampering with the factory-seal voids
the warranty.

Elite 47 Product Manual, Rev. A 21

6.0 Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of Elite 47 drives.

6.1 AC power requirements

None.

6.2 DC power requirements

The voltage and current requirements for a single drive are shown in the following table. V al ues indicated apply
at the drive’s power connector. The power requirements for single-ended models includes the internal disc
drive SCSI I/O termination. Current values are in Amperes.

T able 1: DC power requirements

Notes.

[1] Measured with average reading DC ammeter. Instantaneous +12 V current peaks will exceed these val-

ues.

[2] A drop of –10% is permissible during initial start of spindle, and must return to ±5% before 5,357 rp m is

reached. The ±5% must be maintained after the drive signifies that its power-up sequence has been com-

pleted and that the drive is able to accept selection by the host initiator.
[3] See +12 V current profile in Figure 3.
[4] This condition occurs when the Motor Star t Option is enabled and the drive has not yet received a Start

Motor co mmand.
[5] See Section 6.2.1, “Conducted Noise Immunity.” Specified voltage tolerance is inclusive of ripple, noise,

and transient response.
[6] At power-up, the motor current regulator limits the 12 volt current to an average value of less than the

value given here, although instantaneous peaks may exceed this value. These peaks should measure 5

msec duration or less.
[7] Operating condition is defined as a third-stroke seek at OD and Read One track. A command is issued

every 0.067 seconds.
[8] No terminator power supplied to terminators by drive.

Notes

ST446452W
Single-ended

Voltage +5 V [8] +12 V
Regulation [5] ±5% ±5%[2]
Maximum operating current DC3σ [1] 1.0 1.8
Maximum starting current

Peak DC DC3σ
Peak AC AC3σ

[3]
[3]

1.0 4.8 [6]

5.12
Delayed motor start (max) DC3σ [1] [4] .85 .1
Peak operating current

Typical DCX
Maximum DC3σ
Maximum (peak) AC3σ

[1] [7]
[1]

.98

1.0

1.1

1.6

1.8

2.8
Track following at

OD DCX
ID DCX

[1]
[1]

.97
.96

1.5

1.8
Read Track

OD DC3σ
AC3σ

[1] [10] 1.0

1.1

1.7

1.9
Seeking

Typical DCX
Maximum DC3σ
Maximum (peak ) AC3σ

[1] [9]
[1]

.96

1.0

1.1

1.95

2.1

2.8

22 Elite 47 Product Manual, Rev. A

[9] Seeking is defined as a third-stroke seek at OD. A command is issued every 20 msec.
[10] Read track is defined as repeat reads of track 15 with a duty cycle of 63%.

General Notes from Table 1:

1. Minimum current loading for each supply voltage is not less than 4% of the maximum operating current
shown.

2. The +5 and +12 volt supplies shall employ separate ground returns.

3. Where power is provided to multiple drives from a common supply, careful consideration for individual drive
power requirements should be noted. Where multiple units are powered on simultaneously, the peak start­ing current must be available to each device.

6.2.1 Conducted noise immunity

Noise is specified as a per iodic and random distri bution of frequencies covering a band from DC t o 10 MHz.
Maximum allowed noise values given below are peak to peak measurements and apply at the drive power con­nector.

6.2.2 Power sequencing

The drive does not req uire power sequencing. T he dr ive protects against ina dvertent wr iting duri ng power-up
and down. Daisy-chain operation requires that power be maintained on the terminated device to ensure proper
termination of the per ipheral I/O cables. To automatically delay motor star t based on the target ID (SC SI ID),
enable the Spinup Delay option (install jumper) and disable the Start Command option (remove jumper) on the
J4B connector. See Section 8.1 for pin selection information. To delay the motor until the drive receives a Start
Unit command, enable the Enable Motor Start option on the J4B connector.

6.2.3 12 V current profile

Figure 3 identifies the drive +5 V and +12 V current profile. The current during the various times is as shown.

Figure 3. Typi cal Elite 47 drive +5 V and +12 V current profile

+5 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from 100 kHz to 10 MHz.

+12 V = 150 mV pp from 0 to 100 kHz and 100 mV pp from 100 kHz to 10 MHz.

T0 - Power is applied to the drive.
T1 - Controller self-tests are performed.
T2 - Spindle begins to accelerate under current limiting after performing drive internal diagnostics. See

Note 1 of Table 1.

0 5 10 15 20 25

Time (seconds)

30 35 40 45

1

0

2

3

+12V

Current

(amps)

4

5

6

T2

T1

T4

T6

T5

50

T0

T3

Minimum

AC

Peak

AC

Nominal

(average)

Elite 47 Product Manual, Rev. A 23

Note. All times and currents are typical. See Table 1 for maximum current requirements.

6.3 Power dissipation
ST446452W

Typical operating random read power dissipation is 24 watts (82 BTUs per hour) of DC power average at nom­inal voltages.

6.4 Environment al limi ts

Temperature and h umi dity values experienced by the drive must be s uch th at con dens ation do es not oc cur on
any drive part. Altitude and atmospheric pres sure specifications are referenced to a standard day at 58.7°F
(14.8°C). Maximum wet bulb temperature is 82°F (28°C).

6.4.1 Temperature

a. Operating

The drive meets all specifications over a 41°F to 122°F (5°C to 50°C) drive ambient temperature range with
a maximum gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the
temperatures at the locations specified i n Table 2 are not exceeded. Air flow may be needed to achieve
these temperature values. Operation at c ase temperatures above these values may adversely affect the
drives ability to meet specifications.

The MTBF specification for the drive is based on operating at an ambient temperature of 86°F (30°C).
Occasional excursions to drive ambient te mperatures of 122°F (50°C) or 4 1°F (5°C) may occur without
impact to specified MTBF. To achieve the specified M TBF, the enclosure for the drive should be designed
such that the tem perature values of Table 2 are not exceeded. Air flow may be needed to a chieve these
temperatures. See Section 8.3.1. Continual or sustained operation at ca se temperatures above these val­ues may degrade MTBF.

To confir m that the required cooli ng for the drive electronics and HDA is provided, place the drive in its final
mechanical configuration, perform random write/read operations and, after the temperatures stabilize, mea­sure the case temperature of the components listed on the next several pages.

Operation of the drive at the maximum case temperature is intended for short time periods only. Continuous
operation at the elevated temperatures will reduce product reliability.

T3 - The spindle is up to speed and the head-arm restraint is unlocked.
T4 - Heads move from the landing zone to the data area.
T5 - The adaptive calibration sequence is performed.
T6 - Calibration is complete and the drive is ready for reading and writing.

24 Elite 47 Product Manual, Rev. A

T able 2: PCBA and HDA temperatures

Note.

[1] The air-flow pattern with which the typical case temperature gu idelines were generated is shown in

Figure 9. Local average air velocities were 200 lfpm and inlet air tem perature to the drive was 86°F
(30°C).

[2] The maximum case temperatures are calculated and may not reflect actual operating values. Sufficient

cooling air may be required to ensure that these values are not exceeded.
[3] Measure HDA temperature at point labeled “HDA Temp. Checkpoint” on Figure 4.
[4] PCB mounted integrated circuit case.

Figure 4. Location of PCBA components listed in Table 2

Component

Figure 4
reference

Maximum case [4]
temperature
at 50°C ambient [2]

Typical case [4]
temperature
at 35°C ambient [1]

Motor Controller 1 144°F (62°C) 117°F (47°C)
SCSI Controller 2 149°F (65°C) 122°F (50°C)
Bailey 3 151°F (66°C) 124°F (51°C)
4938A 4 131°F (55°C) 104°F (40°C)
HDA housing [3] 140°F (60°C) 112°F (45°C)

ST446452W Drives

HBAJ

2

3

1

4

HDA Temp.
Check Point

.50"

.75"

Elite 47 Product Manual, Rev. A 25

b. Non-operating

Non-operating temperature should remain between –40° to 158° F (–40° to 70°C) package ambient with a
maximum gradient of 36°F (20°C) per hou r. This assumes that the drive is packaged in the shippin g con­tainer designed by Seagate.

6.4.2 Relative humidity

The values below assume that no condensation on the drive occurs.
a. Operating

5% to 90% non-condensing relative humidity with a maximum gradient of 10% per hour.

b. Non-operating/transit

5% to 95% non-condensing relative humidity with a maximum gradient of 10% per hour.

6.4.3 Effective altitude (sea level)

a. Operating

–1,000 to +10,000 feet (–305 to +3,048 meters)

b. Non-operating

–1,000 to +40,000 feet (–305 to +12,210 meters)

6.4.4 Shock and vibration

Shock and vibration limits specified in this document are measured directly on the drive. If the drive is installed
in an enclosure to which the stated shock and/or vibration cr iteria is applied, resonances m ay occur interna lly
to the enclosure resulting in drive movement in excess of the stated limits . If this situation is apparent, it may be
necessary to modify the enclosure to minimize drive movement.

The limits of shock and vibration defined within this document are specified with the drive mounted by any of
the four methods shown in Figure 5, and in accordanc e with the restrictions of Section 8.4. Orien tation of the
side nearest the LED may be up or down.

6.4.4.1 Shock

a. Operating—normal

The drive, as installed for normal operation, will operate erro r-free while subjected to intermittent shock not
exceeding 2.0 g at a maximum duration of 11 msec (half sinewave). Shock may be applied in the X, Y, or Z
axis.

b. Operating—abnormal

Equipment, as installed for nor mal operation, does not incur physical damage while subjected to inte rmit­tent shock not exceeding 10 g at a maximum duration of 11 msec (half sinewave). Shock occurring at
abnormal levels may promote degraded operational performance dur ing the abnormal shock period. Speci­fied operational performance will continue when normal operating shock levels resume. Shock may be
applied in the X, Y, or Z axis. Shock is not to be repeated more than two times per second.

c. Non-operating

The limits of non-operating shock applies to all conditions of handling and transportation. This includes both
isolated drives and integrated drives.

The drive subjected to non-repetitive shock not exceeding 50 g at a maximum duration of 11 msec (half sin­ewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z
axis.

d. Packaged

Disc drives shipped as loose load (not p alletized) general freight will be packaged to w ithstand drops from
heights as defined in the table below. For additional details, refer to Seagate specifications 30190-001
(under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 kg).

26 Elite 47 Product Manual, Rev. A

Figure 5. Recommended mounting

Package Size Packaged/Product Weight Drop Height

<600 cu in (<9,800 cu cm) Any 60 in (1,524 mm)
600-1,800 cu in (9,800-19,700 cu cm) 0-20 lb (0-9.1 kg) 48 in (1,219 mm)
>1,800 cu in (>19,700 cu cm) 0-20 lb (0-9. 1 kg) 42 in (1,067 mm)
>600 cu in (>9,800 cu cm) 20-40 lb (9.1-18.1 kg) 36 in (914 mm)

Z

Y

X

Z

Y

X

Elite 47 Product Manual, Rev. A 27

6.4.4.2 Vibration

a. Operating—normal

The drive, as installed for normal operation, complies with the complete specified p erformance while sub­jected to continuous vibration not exceeding:

5-300 Hz @ 0.5 g (X, Y, or Z axis)

b. Operating—abnormal

Equipment, as installed for normal operation, does not incur physical damage while subjected to periodic
vibration not exceeding:

5-300 Hz @ 0.75 g (X, Y, or Z axis)
15 minutes of duration at major resonant frequency

Vibration occurring at these levels may degrade operational performance during the abnormal vibration
period. Specified operational performance will continue when normal operating vibration levels are
resumed. This assumes system recov e ry routines are a vailable .

c. Non-operating

The limits of non-operating vibration a pply to all conditions of handling and transpor tation. This includes
both isolated drives and integrated drives.

The drive does not incur physical damage or degraded performance as a result of cont inuous vi bration not
exceeding:

5-22 Hz @ 0.040 inches (1.02 mm) displacement
22-400 Hz @ 1.00 g

Vibration may be applied in the X, Y, or Z axis.

6.4.5 Air cleanliness

The drive is designed to operate in a typical office environment with minimal environmental control.

6.4.6 Acoustics

Sound power during idle shall be 4.6 bels typical when measured to ISO 7779 specification. No prominent
tones are allowed.

6.4.7 Electromagnetic susceptibility

See Section 2.1.

6.5 Mechanical specifications

The following nominal dimensions are exclusive of the decorative front panel accessory. However, dimensions
of the front panel are shown in the figure below. Refer to Figure 6 for detailed mounting configuration dimen­sions. See Section 8.4, “Drive mounting.”

Typical Maximum

Height: 3.25 in (82.6 mm) 3.268 in (83.0 mm)
Width: 5.75 in (146.1 mm) 5.76 in (146.3 mm)
Depth: 8.0 in (203.0 mm) 8.01 in (203.5 mm)
Weight: 7.0 pounds (3.17 kilograms) –

28 Elite 47 Product Manual, Rev. A

Figure 6. Mounting configuration dimensions

L

JK

H

G

F

A

E

[2]

D

B

C

[4]

[1]

[3]

Inches Millimeters

8.000

5.750

2.875

2.950

3.120

0.860

5.500

0.125

3.120

2.950

3.240

203.20

145.05

73.02

54.93

79.25

21.84

139.70

2.17

79.24

74.93

82.30

A
B
C
D
E
F
G
H

J
K
L

0.010

0.010

0.010

0.020

0.010

0.005

0.010

0.010

0.010

0.020

0.020

±
±
±
±
±
±
±
±
±
±
±

.25
.25
.25
.50
.25
.13
.25
.25
.25
.50
.50

±
±
±
±
±
±
±
±
±
±
±

Mounting holes two on each side,
6-32 UNC. Max screw length into
side of drive 0.17 in. (4.318 mm).

Mounting holes four on bottom,
6-32 UNC. Max screw length into
bottom of drive 0.18 in. (4.572 mm).

Power and interface connections.

Decorative front panel.

Notes:

[1]

[2]

[3]
[4]

Elite 47 Product Manual, Rev. A 29

7.0 Defect and error management

The drive, as deliv ered, c omplies with this product manual. The read error rate and specified storage capacities
are not dependent on using defect management routines by the host (initiator).

Defect and error management in the SCSI system involves the drive internal defect/error managem ent and
SCSI systems error considerations (errors in communications between initiator and the drive).

7.1 Drive internal defects and errors

During the initial drive format operation at the factory, media defects are identified, tagged as being unusable,
and their locations recorded on the drive primar y defects list (referred to as the “P” list and also as the EFT
defect list). At factory format time, these known defects are also reallocated, that is, reassigned to a new place
on the medium and the loc ation listed in the defects reallocation table. The “P” list is not altered after factory
formatting. Locations of defects found and reallocated during error recovery procedures after drive shipment
are listed in the “G” list (defects growth list). The “P” and “G” lists may be referenced by the initiator using the
Read Defect Data command (see Section 5.2.1.2 in the

SCSI Interface Product Manual,

part number

77738479).

7.2 Drive error recovery procedures

Whenever an error occurs during drive operation, the d rive, if programmed to do so, performs error recovery
procedures to attempt to recover the data. The error recovery procedures used depend on t he options previ­ously set up in the error recovery parameters mode page. Error recovery and defect management may involve
the use of several SCSI commands, the details of which are descr ibed in the

SCSI Interface Product Manual.

The drive implements selectable error recovery time limits such as are required in video applications. For addi­tional information on this, refer to Table 5.2.1-22 in the

SCSI Interface Product Manual

which describes the

Mode Select/Mode Sense Error Recovery parameters.
The error recovery scheme supported by the drive provides a means to control the total error recovery time for

the entire command in addition to controlling the recovery level for a single LBA. The total amount of time spent
in error recovery for a command can be limited via the Recovery T ime Lim it bytes in the Error Recover y Mo de
Page. The total amount of time spent in error recovery for a single LBA can be limited via the Read Retry Count
or Write Retry Count bytes in the Error Recovery Mode Page.

The drive firmware error recovery algorithms c onsist of 16 levels for read recoveries and 12 levels for writes.
Each level may consist of multiple steps, where a st ep is defined as a recovery function involving a single re­read or re-write attempt. The maximum level used by the drive in LBA recovery is determined by the Read and
Write Retry Counts.

Table 3 equates the Read and Write Retr y Count with the maximum possible recovery time for read and write
recovery of individual LBAs. The times given do not include time taken to perform reallocations, if reallocations
are performed. The ARRE b it enables/ disables reallocations, but if the RC bit is one, it takes p recedenc e over
ARRE to disable auto reallocation. When the drive has read all of the c alled for data, it does not go back and
reallocate any sectors of erroneous data that were not reallocated because the RC bit was one. The drive does
not report an unrecovered error when RC is one.

30 Elite 47 Product Manual, Rev. A

[1] Setting these retry c ounts to a value below the default setting could result in degradation of the unrec ov-

ered error rate below the product specification.
For example, suppose the read/write recovery page has the RC bit = 0, the read retr y c oun t set t o 4, and

the recovery time limit set to 456. A four block read command can take up to 197 msec recovery time for
each block and a maximum of 456 msec recovery time for all four blocks . If either of these limits is reached
and a block has not yet be en recovered, the co mmand wil l end w ith CHECK C ONDITION status and an
unrecoverable read error will be reported.

Table 3: Read and write retry count maximum recovery times

Read retry
count [1]

Maximum recovery time
per LBA (cumul ative, msec)

Writ e re try
count [1]

Maximum recovery time
per LBA (cumulative, msec)

056 056
189 189
2 123 2 123
3 167 3 189
4 245 4 234
5 289 5 245
6 356 6 289
7 489 7 356
8 534 8 456
9 600 9 589
10 700 10 1256
11 900 11 2423
12 1178 12 (default) 3589
13 1845
14 3012
15 4178
16 (default ) 4378

Elite 47 Product Manual, Rev. A 31

8.0 Installation

The first thing to do wh en installing a dr ive is to set the drive ID (sele ct) on the SCSI bus and set up cer tain
operating options. This is usually done by installing small shorting jumpers on the pins of connectors J01, J4A,
and J4B on the PC B. Som e us ers c onn ec t cables to the jumper headers and perform the set-up u sing rem ote
switches.

If your sys tem is “SCAM” (SCSI Confi gured A ut o Magically ) complia nt, the syst em assign s the driv e ID ov er the
interface, so there is no need to be concerned ab out drive ID. Setting the drive ID jumpers doe sn’t hur t any­thing, but is not necessary.

If your system is not “SCAM” compliant, you do need to set the drive ID using the ID jumpers.

Configure drive options

For option jumper locations and definitions refer to Figures 7 and 8. Drive default mode parameters are not nor­mally needed for installation. Refer to Section 9.3.2 for default mode parameters if they are needed.

• Ensure that the SCSI ID of the drive is not the same as the host adapter. Most host adapters use SCSI ID 7.
ID 7 is the highest priority on both 8 and 16 bit data buses.

• If multiple devices are on the bus, set the drive SCSI ID to one that is not presently used by other devices on
the bus.

• If the drive is the only device on the bus, attach it to the end of the SCSI bus cable. Permanently installed ter­minators must be enabled on the drive using jumper plug TE if termination is not provided by the host equip­ment.

• If the drive is attached to a bus that contains other devices and the ne w drive is not attached to the end of the
bus, the Terminator Enable jumper (TE) should be removed from the new drive.

Note. For additional information about terminat or requirement s, refer to Sections 9.8 and 9.9.

• Set all appropriate option jumpers for desired operation prior to power on. If jumpers are changed after
power has been applied, recycle the drive power to make the new settings effective.

• Installation instructions are provided by host system document ation or with any additiona lly purchased drive
installation software. If necessary, see Section 10.0 for Seagate support services telephone numbe rs.

• Do not remove the manufacturer’s installed labels from the drive and do not cover with additional labels, as
the manufacturer labels contain information required when ser vicing the product.

Formatting

• It is not necessary to low level format this drive. The drive is shipped from the factory low level formatted in
512-byte sectors.

• Reformat the drive if a different spare sector allocation scheme is selected.

• High level f ormatting the drive involves assigning one or more partitions or logical drives to the drive volume.
Follow the instructions in the system manuals for the system into which the drive is to be installed.

8.1 Dri ve ID/optio n select heade r

Figures 7 and 8 show views of the drive ID select and option select jumper connectors. The notes following the
figures describe the functions of the various jumper positions on the connectors J01, J4A, and J4B.

32 Elite 47 Product Manual, Rev. A

Figure 7. Option select jumper connectors

SCSI ID = 0 (default)

J4A

SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = Ah (10)
SCSI ID = Bh (11)
SCSI ID = Ch (12)
SCSI ID = Dh (13)
SCSI ID = Eh (14)
SCSI ID = Fh (15)

Terminator Enabled (TE)
Terminator Disabled (TE)

Write Protect Enabled (WP)
Entire drive write protected.

Write Protect Disabled (WP)
Reserved

Pin 1

A3A2A1A

0

Pin 15

J01

J6

SCSI I/O

Connector

DC Power
Connector

J4B

Pin 1

Pin 1

J4A

Immediate spinup (if the Start Command
option jumper is disconnected)

Spinup delay equal to the SCSI Bus ID
multiplied by 12 seconds (if the Start
Command option jumper is disconnected).

Spinup Delay Option (DS)

J4B

Start spindle according to the Spinup
Delay option jumper.

Start spindle after the SCSI Bus sends
a Start Unit command.

Start Command Option (ME)

Check the parity of data bytes read from
the SCSI Bus.

Ignore parity check.

SCSI Bus Parity Check (PD)

Reserved

J01

J4B

J4A

Pin 1

Pin 1

Pin 1

Terminator Power Option (TP)
Internal terminator power source.
External terminator power source.

Internal terminator and drive
power to I/O.

J01

Pos. 2
Pos. 1

Pos. B

Pos. A

Pin 2

Pin 1

Pin 4

Pin 3

Pin 1

Pin 3

Pin 4

Pin 2

Elite 47 Product Manual, Rev. A 33

Figure 8. J4A connections fo r Activity, Fault, and Ready LED indicators

J4A

Reserved
Active LED Connector
Fault/Ready LED Connector

Active
Fault
Ready

Note: On some LEDs the flat
side of indicator is cathode.

Pin 1

Pin 16

Pin 15 Pin 17

Pin 18

CATH

CATH

CATH

J01

J4B

J4A

J6

SCSI I/O

Connector

DC Power

Connector

Pin 1

Pin 1

34 Elite 47 Product Manual, Rev. A

8.1.1 Notes for Figure 8

Notes explaining the functions of the various jumpers on jumper header conn ectors J01, J4A and J4B are
given here. The term “default” means as standard OEM uni ts are configured wit h a jum per on thos e positions
when shipped from factory. “Off” means no jumper is installed; “On” means a jumper is inst alled. OFF or ON
underlined is factory default condition.

Function description of configuration jumpers

[1] See Table 11 for the I/O connector (J6) pins used for Termpower.

J4A jumpers Jumper function description
A

3

, A2, A1, A

0

SCSI ID jumpers. Drive ID address on the SCSI bus from 0 to 15 established by these
jumpers as shown. Default is Drive ID = 0. ID = 7 is highest priority which is usually the
SCSI host adapter. Priorities go ID7 to ID0, then ID15 to ID8.

WP

On Entire drive is write protected.
Off Drive is not write protected. (Default)

TE

On On-board (non-removable) terminator circuits are enabled. (Default)
Off On-board (non-removable) terminator circuits are disabled.

J4B Jumpers
DS ME

Off Off Spindle starts immediately after power up. (Default)
Off On Spindle does not star t until a Star t Unit command is rec eived from the host.
On Off Startup is delayed by SCSI ID times 12 seconds after power is applied. For example:

Drive with SCSI ID of 0 starts the spindle immediately when DC power is connected,
drive with SCSI ID of 1 starts after a 12-second delay, drive with SCSI ID of 2 starts
after 24-second delay, etc. Tolerance is plus 3 seconds, minus 0 seconds.

On On Spindle starts when the host sends a Start Unit command. Delayed s tart feature is over-

ridden and does not apply when the ME jumper is ins ta lle d.

PD

On SCSI parit y checking and parity error repor ting by the drive is disabled.
Off Drive checks for parity and reports the results of parity checking to host. (Default)

J01 Jumpers [1]

No jumpers on No te rminator power is connected to the drive terminators or the SCSI bus I/O cable.
2-4 Drive terminator power comes from SCSI bus.
1-3 and

2-4

Drive supplies terminator power to itself (internal connection) and to the SCSI bus I/O
cable.

1-2 Terminator power is supplied from the drive’s internal power to the drive’s internal termi-

nators only.

Elite 47 Product Manual, Rev. A 35

8.2 Dri ve orientati on

The balanced rotary arm actuator design of the drive allows it to be mounted in any orientation. All drive perfor­mance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on
its side) orientations, and these are the two preferred mounting orientations.

8.3 Cooling

Cabinet cooling must ensure that the ambien t temperature immediately surrounding th e drive will not exceed
temperature conditions specified i n Section 6.4.1. Specific consideration s hould be given to make sure ade­quate air circulation is present around the pr inted circuit board asse mbly (PCBA) to meet the requireme nts of
Section 6.4.1.

8.3.1 Air flow

The rack, cabinet, or drawer en vironment for the drive must provide cooling of the electronics and the head and
disc assembly (HDA). You should c onfirm that adequate cooling is prov ided using the temperatu re measure­ment guidelines described below.

The drive should be oriented, or air flow directed, so that the least amount of air-flow resistance is created
while providing air flow to the electronics and HDA. Also, the shortest possible path between the air inlet and
exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the
rack, cabinet, or drawer environment.

Possible air-flow patterns are s hown i n F igure 9. T he air-flow patterns are c reated by one or more fans, either
forcing or drawing air as shown in th e illustrations. Other ai r-flow patter ns are acc eptable as long as the tem­perature measurement guidelines of Section 6.4.1 are met.

Figu re 9. Suggested ai r f low

Above unit
Über der Einheit

Under unit
Unter der Einheit

Above unit
Über der Einheit

Under unit
Unter der Einheit

Note. Air flows in the direction shown (front to back)
or in reverse direction (back to front)

Hinweis. Luftstrom in der angezeigten Richtung
(von hinten nach vorne) oder in umgekehrter
Richtung (von vorne nach hinten)

Note. Air flows in the direction shown or
in reverse direction (side to side)

Hinweis. Luftstrom in der angezeigten Richtung oder in
umgekehrter Richtung (von Seite zu Seite)

36 Elite 47 Product Manual, Rev. A

8.4 Dri ve moun ting

Use the bottom or side mounting holes to secure the drive in the host enclosure.

8.5 Grounding

Signal ground (PCBA) and HDA ground are connected t ogether in the dr ive and cannot be separated by the
user. The equipment in which the drive is mounted is conne cted direc tly to the HDA and PCBA with no el ectr i­cally-isolating shock mounts. If you do not want the system chassis to be connected to the HDA/PCBA ground,
you must provide a nonconductive (electrically -isolating) method o f mounting the drive in the host equipme nt.
Increased radiated emissions m ay result if you do not provide the maxi mum surface area ground connection
between system ground and drive ground. This is the system designer’s and integrator’s responsibility.

Elite 47 Product Manual, Rev. A 37

9.0 Interface requirements

This section describes Elite 47 interface requirements.

9.1 General description

This section partially describes the in terface requireme nts as implemented on the dri ves. The m ajor portion
of the interface requirements/implementation is described in the

SCSI Interface Product Manual

, part
number 77738479. This section has tables that give the Elite 47 family drive’s version of the SCSI implementa­tion described in the

SCSI Interface Product Manual

.

9.2 SCSI interface messages supported

Table 4 lists the messages support ed by the SCSI-2 and SCSI-3 modes of the Elite 47 family drives.

Notes.

[1] Extended message (refer to the

SCSI Interface Product Manual

, part number 77738479).

T able 4: SCSI messages supported by Elite 47 family drives

Message Name Message Code

Supported by
SCSI-2

Abort 06h Y
Abort-tag 0Dh Y
Bus device reset 0Ch Y
Clear queue 0Eh Y
Command complete 00h Y
Continue I/O process 12h Y
Disconnect 04h Y
Extended messages 01h[1] Y
Identify 80h-FFh Y
Ignore wide residue (two bytes) 23h Y
Initiate re covery 0Fh N
Initiator detected error 05h Y
Linked command complete 0Ah Y
Linked command complete with flag 0Bh Y
Message parity error 09h Y
Message reject 07h Y
Modify data pointer [1] N
No operation 08h Y
Queue tag messages (two bytes)

Head of queue tag 21h Y
Ordered queue tag 22h Y

Simple queue tag 20h Y
Release recovery 10h N
Restore pointers 03h Y
Save data pointer 02h Y
Synchronous data transfer req. [1] Y
Target transfer disable 13h Y
Terminate I/O process 11h Y
Wide data transfer request [1] Y

38 Elite 47 Product Manual, Rev. A

9.3 SCSI interface commands supported

Table 5 lists the SCSI interface commands that are suppor ted in the SCSI-2 and SCS I-3 modes of the dr ive.
OEM standard drives are shipped set to operate in SCSI-2/SC SI-3 mode. Elite family drives can be changed
back and forth between SCSI-1, SCSI-2, and SCSI-3 modes using the Change Definition command .

T able 5: Commands supported by Elite 47 family drive

Command Name

Command
Code [5]

Supported by
SCSI-2/3

Change definition 40h Y
Compare 39h N
Copy 18h N
Copy and verify 3Ah N
Format unit [1] 04h Y

Block format N
Bytes from index Y
Physic al se cto r format Y
DPRY bit supported Y
DCRT bit supported Y
STPF bit supported Y
IP bit supported Y
DSP bit supported Y
IMMED bit supported Y
VS N

Inquiry 12h Y

Date code page (C1h) Y
Firmware numbers page (C0h) Y
Implemented operating definitions page (81h) Y
Jumper settings page (C2h) Y
Supported vital product data pages (0h) Y

Unit serial number page (80h) Y
Lock-unlock cache 36h N
Log select 4Ch Y

PCR bit Y

DU bit N

DS bit Y

TSD bit Y

ETC bit N

TMC bit N

LP bit N
Log sense 4Dh Y

Cache statistics page (37h) Y

Non-medium error page (06h) Y

Pages supported list (00h) Y

Power-on time page (3Eh) Y

Read error counter page (03h) Y

S.M.A.R.T. status log page (2Fh) N

S.M.A.R.T. attitude log page (30h) N

Veri fy error counter page (05h) Y

Write error counter page (02h) Y

Elite 47 Product Manual, Rev. A 39

Mode select (same pages as Mode
Sense command, see below)

15h Y [2 ] [3]

Mode select (10) 55h Y
Mode sense 1Ah Y [2] [3]

Caching parameters page (08h) Y
Control mode page (0Ah) Y
Disconnect/reconnect (02h) Y
Error recovery page (01h) Y
Format page (03h) Y
Information exceptions control page (1Ch) Y
Notch and partition page (0C) N
Power condition page (1Ah) Y
Rigid disc drive geometry page (04h) Y

Unit attention page (00h) Y

Verify error recovery page (07h) Y

Xor control page (10h) Y
Mode sense (10) 5Ah Y
Prefetch 34h N
Read 08h Y
Read buffer (modes 0, 2, 3 supported) 3Ch Y
Read capacity 25h Y
Read defect data 37h Y
Read extended 28h Y

DPO bit supported Y

FUA bit supported Y
Read long 3Eh Y
Reassign blocks 07h Y
Receive diagnostic results 1Ch Y

Supported diagnostics pages (00h) Y

Translate page (40h) Y
Release 17 h Y
Release (10) 57h Y
Request sense 03h Y

Actual retry count bytes Y

Extended sense Y

Field pointer bytes Y
Reserve 16 h Y

3rd party reser ve Y

Extent reservation N
Reserve (10) 56h Y

3rd party reser ve Y

Extent reservation N
Rezero unit 01h Y
Search data equal 31h N
Search data high 30 h N
Search data low 32h N

T able 5: Commands supported by Elite 47 family drive (continued)

Command Name

Command
Code [5]

Supported by
SCSI-2/3

40 Elite 47 Product Manual, Rev. A

[1] The drive can format to any even number of bytes per sector from 512 to 4,096.
[2] Supports 6-byte and 10-byte versions.
[3] Table 7 shows how individual bits are set which are changeable by the host.
[4] Warning: A power loss during flash programming can result in firmware corruption. This usually makes

the drive inoperable.

[5] 58-59h not used.

5B-5Fh not used.
60-BFh not used.
C0-DFh not used.
E0-FFh not used.

Seek 0Bh Y
Seek extended 2Bh Y
Send diagnostics page 1Dh Y

Supported diagnostics pages Y

Translate page Y
Set limit s 33h N
Start unit/stop unit (start/stop spindle) 1Bh Y
Synchronize cache 35h Y
Test unit ready 00h Y
Verify 2Fh Y

DPO bit supported Y

BYTCHK bit supported Y
Write 0Ah Y
Write and verify 2Eh Y

DPO bit supported Y
Write buffer (modes 0, 2 supported) 3Bh Y

Firmware download option (modes 5, 7 supported) [4] Y
Write extended 2Ah Y

DPO bit supported Y

FUA bit supported Y
Write long 3Fh Y
Write same 41h Y
XD read 52 h Y
XD write 50h Y
XP write 51h Y

T able 5: Commands supported by Elite 47 family drive (continued)

Command Name

Command
Code [5]

Supported by
SCSI-2/3

Elite 47 Product Manual, Rev. A 41

9.3.1 Inquiry data

Table 6 following lists the Standard Inquiry command data that the drive returns to the initiator per the fo rmat
given in the

SCSI Interface Product Manual,

part number 77738479, se ction 5.1.1.3.

T able 6: Elite 47 family dri ve Standard Inquiry data

Notes.

[]

1

The drive can be changed between these two configurations:
01 = SCSI-1 implemented.
02 = SCSI-2/SCSI-3 implemented (default is 02).

[]

2

The drive can be changed between these two configurations:
01 = Response data is in SCSI-1 format and has comp atibilit y with Comm on Com mand Set data.
02 = Response data is in SCSI-2/SCSI-3 format (default).

R# Four ASCII digits representing the last four digits of the product Fi rm ware Rele as e num ber. This informa-

tion is also given in the V ital Product Data pa ge C0h, t ogether with ser vo RAM and ROM rel ease num-

bers.
S# Eight ASCII digits representing the eight digits of the product serial number.
[]

3

Bytes 18 through 24 reflect model of drive.
[]

4

Copyright Year - changes with actual year.

9.3.1.1 Inquiry Vital Product Data pages

Instead of the Standard Inquiry data shown in Table 6, the initiator c an request several Vital Product Data
pages by setting the Inquiry com mand EVPD bit to one. The

SCSI Interface Product Manual,

part number
77738479, section 5.1.1.3.1 list s the Vital Prod uct Data pages suppor ted and describes their formats. A sepa­rate Inquiry command must be sent to the drive for each Vital Product Data page the initiator wants the drive to
send back.

9.3.2 Mode Sense data

The Mode Sense com mand provides a me ans for the drive to repor t its operating parameters to t he initiator.
The drive maintains four sets of m ode parameters: default values, saved values, current values and change­able values.

Default values are hard-coded in the drive firmware that is stored in flash EPROM n onvolatile memory on t he
drive PCB. Default values can be changed only by downloading a complete set of new firmware into the flash
EPROM. An initiator can reques t and receive from the dr ive a list of default values and us e those in a Mo de
Select command to set up new current and saved values, where the values are changeable.

Saved values are stored on the disk media using a Mode Select command. Only parameter values that are
allowed to be changed can be changed by this method. “Changeable values” are defined below. Parameters in
the saved values list that are not chan geable by the Mode Selec t command get t heir values from the default
values storage.

Bytes Dat a (HEX)

0-15 00 00 [02]1[02]28B 00 01 3E 53 45 41 47 41 54 45 20 VENDOR ID
16-31 53 54 [34 34 36 34 35 32 57]

3

20 20 20 20 20 20 20 PRODUCT ID
32-47 R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00
48-63 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 [31] COPYRIGHT
112-127 [39] [39] [38]

5

20 53 65 61 67 61 74 65 20 41 6C 6C 20 NOTICE

128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20

42 Elite 47 Product Manual, Rev. A

Current values are volatil e values currently being used by the drive to control its operation. A Mode Select com­mand can be used to c han ge t hese values (only t hose t hat are c han geable). Or i ginally, they are installed from
saved or default values after a power on reset, hard reset, or Bus Device Reset message.

Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and
saved values can be changed by a Mode Select command. A “one” allows a change to a corresponding bit; a
“zero” allows no change. For e xample, in Table 7 refer to Mode page 01, in the first row titled “CHG.” These are
hex numbers representing the changeable values for Mode page 01. Note in col umns 1 and 2 (bytes 00 and

01), there is 00h, which indicates that in bytes 00 and 01 none of the bits are changeable. Note also that bytes
04, 05, 06, and 07 are not changea ble, because those fields are all zeros. In byte 02, hex value EF equates to
the binary pattern 1110 1111. If there were a zero in any bit position in the field, it means that bit is not change­able. Bits 7, 6, 5, 3, 2, 1, and 0 are changeable, because those bits are all ones. Bit 4 is not changeable. In this
particular example, it indicates 7 of 8 error recovery control bits are changeable. FF in column 4 indicates all
bits in byte 3 are changeable.

The changeable values list can only be changed by downloading new firmware into the flash EPROM.
On drives requiring unique saved values, the required unique saved values are stored into the saved values

storage location on the media pr ior to shipp ing the drive. Some dr ives may have unique firmware with uniq ue
default values also.

On standard OEM drives the saved values are taken from the default values list and stored into t he saved val­ues storage location on the media prior to shipping.

When a dr ive is powered up, it takes saved values from the media an d st ores them to the current values stor­age in volatile memory. It is not possible to change the current values (or the saved values) with a Mode Select
command before the drive is up to speed and is “ready.” An attempt to do so results in a “Check Condition” sta­tus being returned.

Note. Becaus e there may be several different versions of drive control firmware in the total population of

drives in the field, the Mode Sense values given in the following tables may not exactly match those of
some drives.

Elite 47 Product Manual, Rev. A 43

The following tables list the values of the data bytes returned by the drive in response to the Mode Sense com­mand pages (see

SCSI Interface Product Manual,

part number 77738479).

Definitions:

SAV = Saved values are stored on the disk media using a Mode Sense command.
DEF = Default value; standard drives are shipped configured this way.
CHG = Chang eable bits; indicates if current and saved values are changeable.

Table 7: Mode Sense data, ST446452 default values (SCSI-2/3 implementation)

[1] Though byte 12, bit 7 is shown as changeable, the FSW function governed by that bit is n ot i mp lement ed

by this drive.

Bytes 00010203040506070809101112 131415161718 1920212223

Mode
Sense
Data

B7 00 10 08 05 7A A3 9C 00 00 02 00

Mode

Page

<------------------------------Mode page headers and parameter data bytes----------- ----------------->

DEF 01

81 0A CC 10 40 00 00 00 0C 00 FF FF

CHG01 81 0A FF FF 00 00 00 00 FF 00 FF FF

DEF 02 82 0E 80 80 00 0A 00 00 00 00 00 00 00 00 00 00
CHG02 82 0E FF FF 00 00 00 00 00 00 00 00 87 00 00 00

DEF 03 83 16 00 A8 00 52 00 00 00 00 01 48 02 00 00 01 00 28 00 7C 40 00 00 00
CHG03

83 16 00 00 FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 04 84 16 00 27 0C 1C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 15 18 00 00
CHG04

84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 07 87 0A 00 10 40 00 00 00 00 00 FF FF
CHG07 87 0A 0F FF 00 00 00 00 00 00 00 00

DEF 08 88 12 10 00 FF FF 00 00 FF FF FF FF 80 03 00 00 00 00 00 00
CHG08 88 12 B5 00 00 00 FF FF FF FF 00 00 A0[1] FF 00 00 00 00 00 00

DEF 0A 8A 0A 02 00 00 00 00 00 00 00 00 00
CHG0A 8A 0A 03 F3 00 00 00 00 00 00 00 00

DEF 10 90 16 00 00 00 00 04 B6 00 00 00 00 00 00 00 00 00 00 00 00 00 00 40 00
CHG10

90 16 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 1A 9A 0A 00 00 00 00 00 01 00 00 00 04
CHG1A 9A 0A 00 03 00 00 00 00 00 00 00 00

DEF 1C 9C 0A 00 04 00 00 00 00 00 00 00 01
CHG1C 9C 0A 8C 0F 00 00 00 00 00 00 00 00

DEF 00 80 02 00 00
CHG 00 80 02 77 42

Read
Capacity
Data

05 7A A3 9B 00 00 02 00

44 Elite 47 Product Manual, Rev. A

9.4 SCSI bus conditions and miscellaneous features supported

Asynchronous SCSI bus conditions suppor ted by the drive are listed below. These conditions cause the SCSI
device to perform certain actions and can alter t he S CS I bus phase s equ enc e. Other miscel laneou s operating
features supported are also listed here. Refer to the

SCSI Interface Product Manual,

part number 77738479 for

details.

Table 8: SCSI bus conditions and other miscellaneous features

ESP Conditions or feature

N Adaptive caching
Y Arbi trating system
Y Asynchronous data transfer
Y Asynchronous event notification
Y Att ention condition
Y Contingent allegiance condition
Y Capacity programm ing
Y Deferred error handling
N Differential interface circuits available
Y Disconnect/reconnect
Y Parameter rounding (controlled by the round bit in the Mode Select Page 0)
Y Queue tagging (up to 64 queue tags supported)
Y Reporting actual retry count in e xtended sense byte s 15, 16 and 17
Y Reset condition
Y Segm ented caching

Y

SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes (in
Table 5.2.1-25 of the

SCSI Interface Product Manual)

Y Synchronous data transfer
N Zero latency read

ESP Status supported

Y Good
Y Check conditi on
Y Condition met/good
YBusy
Y Intermediate/good
Y Intermediate/condition met/good
Y Reservation conflict
Y Queue full

Elite 47 Product Manual, Rev. A 45

9.5 Synchronous data transfer

The data transfer period to be used by the drive and the initiator is established by an exchange of messages
during the Message P hase of operation. See the s ection on message protocol in the

SCSI Interface Product

Manual.

9.5.1 Synchronous data transfer periods supported

Table 9 lists synchronous data transfer periods supporte d by the drive.

Table 9: Synchronous data transfer periods supported

[1] Fast-20 (Ultra SCSI) transfer rates.

9.5.2 REQ/ACK offset

The maximum REQ/ACK value supported by Elite 47 SCSI drives is 15 (0Fh).

9.6 Physical interface

Figure 10 shows the location s of the drive physical interface components. The locations of the DC power con­nector, the SCSI interface connector, and the drive select and option select headers are shown.

Details of the physical, electrical and logical characteristics are given in sections following, while the SCSI
operational aspects of Seagate drive interfaces are provided in the

SCSI Interface Product M anual,

part num -

ber 77738479.
This section descri bes the connectors, cables, signals, terminators and bus t iming of the DC and SCSI I/O

interface. See Sections 9.8 and 9.9 for additional terminator information.

9.6.1 DC cable and connector

The drive receives DC power through a 4-pin connector (see Figure 10 for pin assignm ents) mounted at the
rear of the main PCB. Recommended part numbers of the mating DC power connector are listed below, but
equivalent parts may be used.

M (Decimal) Transfer period (M times 4 nanoseconds) Transfer rate (mega transfers/second)

12 [1] 50 [1] 20.0 [1]
15 [1] 62.5 [1] 16.0 [1]
18 [1] 75 [1] 13.33 [1]
25 100 10.0
31 125 8.0
37 150 6.66
50 200 5.0
62 250 4.0
75 300 3.33
87 350 2.86

100 400 2.5

Typ e of Cabl e Connector Contacts (20-14 AWG)

14 AWG AMP 1-480424-0 AMP 60619-4 (loose piece)

AMP 61117-4 (strip)

46 Elite 47 Product Manual, Rev. A

Figure 10. Physical interface

Pin 1

J6

SCSI I/O

Connector

Pin 1

DC Power
Connector

J15 DC Power

Pin

1
2
3
4

Power

+12V
+12V ret
+ 5V ret
+ 5V

J6

Pin 1

4321

Elite 47 Product Manual, Rev. A 47

9.6.2 SCSI interface physical description

The drives may be daisy-chained together or with other compatible SCSI devices. Both ends of the cable must
be terminated. The drives implement single-ended drivers and receivers. All signals are common between all
SCSI devices. The drive may be daisy-chained only with SCSI devices having the same type drivers and
receivers. Devices having single-ended interface circuits cannot be on t he sam e daisy chain with devices hav­ing differential interface circuits. A maximum of 16 SCSI devices (including the host) may be daisy-chained
together. However , please note the restrictions described in Section 9.6.3 about the number of devices allowed
in a daisy chain. The SCSI devices at both ends of the daisy chain are to be terminated. Inter mediate SCSI
devices shall not be term inated (see Fig ure 11). To disable termination, rem ove the terminat or enable jumper

TE on J4A select header, not the terminator power source selector jumper TP on J01 (Figure 7).

9.6.3 SCSI interface cable requirements

In general, cables having the characteristic impedances given in Section 9.6.3.1 are not available; however,
impedances that are somewhat lower are satisfactory. A characteristic impedance as shown in Table 10 is rec­ommended for unshielded flat or twisted pair ribbon cable. However, most available cables have a somewhat
lower characteristic impedance. To minimize discontinuances and signal reflecti ons, cables of different imped­ances should not be used in the same bus. Implementations may require trade-offs in shielding effectiveness,
cable length, the number of loads, transfer rates, and cost to achieve satisfactory system operation. If you m ix
shielded and unshielded cables within the same SCSI bus, the effect of impedance mismatch must be carefully
considered. Proper impedance matching is especially important to maintain adequate margin at FAST and FAST

-20 (Ultra SCSI) transfer rates.
Elite 47 drives use non-shielded cable connectors. Use a 68-conductor flat cable or 34 twisted pair cable with

connectors listed in 9.6.4.1. Use a minimum conductor size of 28 AWG to minimize noise effects.
Suggested non-shielded flat cable part numbers are:

Flat cable - 35M-3365-68 Twisted pair - Spectra Twist in flat 455-248-68

9.6.3.1 Single-ended I/O circuits

The maximum total cable length allowed depends on several factors. Table 10 lists the maximum lengths
allowed for different configurations of drive usage. These values are from the ANSI SCSI-3 Fast-20 (also called
Ultra SCSI) specification X3T10/1071D. All device I/O lines must have equal to or less than 25 pf capacitance
to ground, measured at the beginning of the stub.

Notes:

[1] The spacing of devices on the mainline SCSI bus should be at least three times the stub leng th (defined

below) to avoid clustering (Refer to Annex C of X3T10/1071D). Based on this criteria, it may be that 8
devices will not actually work on 1.5 meters of line ( .1 x 3 x 7 = 2.1 meters).

A stub length of no more than 0.1 meter (0.33 foot) is allowed off the main line interconnection with any con­nected equipment. The stub length is measured from the transceiver to the connection to the mainline SCSI
bus.

Single-ended I/O pin assignments are shown in Table 11.

9.6.4 Mating connectors

Part numbers for connectors that mate with the various Elite 47 I/O connectors are given in the sections follow­ing.

Table 10: Cable characteristics for single-ended circuits

I/O transfer rate

Maximum number of
devices on line

Maximum cable length
allowed

T ransmission line imped ance
REQ/ACK Other signals

<10 M transfers/s 8 (reg. SCSI bus) 6 meters (19.7 ft.) 90 ± 6 Ohms 90 ± 10 Ohms
<

10 M transfers/s 16 (wide SCSI bus) 6 meters (19.7 ft.) 90 ± 6 Ohms 90 ± 10 Ohms

<

20 M transfers/s 4 (reg./wide SCSI bus) 3 meters (9.8 ft.) 90 ± 6 Ohms 90 ± 10 Ohms

<

20 M transfers/s 8 (reg./wide SCSI bus) 1.5 meters (4.9 ft.) [1] 90 ± 6 Ohms 90 ± 10 Ohms

48 Elite 47 Product Manual, Rev. A

9.6.4.1 Mating connectors for ST446452W models

Use a non-shielded 68-conductor cable connector consisting of two rows of 34 male contacts with adjacent
contacts 0.050 inch (1.27 mm) apart.

Recommended mating wide connector par t numbers are:

[1] See Figure 11.
The drive device connector is a non-shielded 68-conductor connector consisting of two rows of 34 female pins

with adjacent pins .050 inch apart. The connector is keyed by means of its shape (see Figure 12).

[1] Open-end type (in-line application) connector used. Term inators disabled.
[2] Host need not be on the end of the daisy chain. Another device can be on the end with the terminator, the

host having no terminator.

[3] Total interface cable length must not exceed that specified in Section 9.6.3.1 (including host adapter/initia-

tor). The number of devices allowed depends on data transfer rate. See Table 10.

[4] SCSI ID7 has highest arbitration priority. Priority is ID 7 to ID 0, then ID 15 to ID 8. (ID 8 has the lo west pri-

ority).
[5] Last drive on daisy chain.
[6] If end device, external terminator and closed-end type 68-pin connector used. Install terminator enable

(TE) jumper plug.

Figure 11. SCSI daisy-chain interface cabling

Amp Model 786096-7 Female, 68-pin, panel mount
Amp Model 786090-7 Female, 68-pin, cable mount
Amp Model 749925-5 (.050 inch conductor centers, 28 or 30 AWG wire)

Use two, 34 conductor, .050 inch center flat cable with this con­nector. This type connector can only be used on cable ends. [1]

Amp Model 88-5870-294-5 W/O Strain Relief (.025 inch conductor centers, 30 AWG wire).

Use either on cable ends or in cable middle section for daisy-chain

installat ions. [1]
Amp Model 1-480420-0 Power connector 4 circuit housing
Berg 69307-012 12-position, 2 x 6, 2 mm receptacle housing

Host Adapter

PCB

Pin 1

(check your adapter

for Pin 1 location)

SCSI ID 1

[5]

SCSI ID 0

SCSI ID 7 [4]

2 through X SCSI devices[3]

“W” Model

Drive

Note:

Do not mix
“W” and “WD”
model drives
on the daisy chain.

[6]

[1]

[1]

[1]

[2]

Elite 47 Product Manual, Rev. A 49

Figure 12. Non-shielded 68-pin SCSI device connec tor

Position 1

2X .050

2X R .125

(2.060)

(.197)

50 Elite 47 Product Manual, Rev. A

T able 11: Single-ended wide cable assignmen ts for ST446452W drives

Signal
name [1]

Connector
contact
number [3]

Cable
conductor
number [2]

Connector
contact
number [3]

Signal
name [1] [9]

GND 1 1 2 35 –DB12
GND 2 3 4 36 –DB13
GND 3 5 6 37 –DB14
GND 4 7 8 38 –DB15
GND 5 9 10 39 –DBP1
GND 6 11 12 40 –DB0
GND 7 13 14 41 –DB1
GND 8 15 16 42 –DB2
GND 9 17 18 43 –DB3
GND10192044–DB4
GND11212245–DB5
GND12232446–DB6
GND13252647–DB7
GND14272848–DBP
GND15293049GND
GND16313250GND
TERMPWR17333451TERMPWR
TERMPWR18353652TERMPWR
RESERVED 19 37 38 53 RESERVED
GND20394054GND
GND21414255–ATN
GND22434456GND
GND23454657–BSY
GND24474858–ACK
GND25495059–RST
GND26515260–MSG
GND27535461–SEL
GND28555662–C/D
GND29575863–REQ
GND30596064–I/O
GND31616265–DB8
GND32636466–DB9
GND33656667–DB10
GND34676868–DB11

Elite 47 Product Manual, Rev. A 51

Notes:

[1] See Section 9.7.1 for detailed electrical characteristics of these signals.
[2] The conductor number refers to the conductor position w hen using 0.025-inch (0. 635 mm) cent erline flat

ribbon cable. Other cable types may be used to implement equivalent contact assignments.
[3] Connector contacts are on 0.050 inch (1.27 mm) centers.
[4] “NC” means no connection.
[5] The conductor number refers to the conductor position (right to left in Figure 11) when using 0.050 i nch

(1.27 mm) centerline flat ribbon cable. Other cable types may be used to impl ement equivalent contact

assignments.
[6] Connector contacts are on 0.100 inch (2.54 mm) centers.
[7] 8 bit devices which are connected to the 16 data bit differential I/O shall leave the following signals open:

–DB12 –DB13 –DB14 –DB15 –DBP1 –DB8 –DB9 –DB10 –DB11.

+DB12 +DB13 +DB14 +DB15 +DBP1 +DB 8 +DB 9 +DB 10 +DB11.

8 bit devices which are connected to the 16 data bit single-ended I/O shall have the following signals con-

nected as shown:

to ground: +DB12 +DB13 +DB14 +DB1 5 +DBP1 +DB8 +DB 9 +DB 10 +DB 11.
open circuit: –DB12 –DB13 –DB14 –DB15 –DBP1 –DB8 –DB9 –DB10 –DB11.

All other signals shall be connected as defined.
[8] GND provides a means for differential de vices t o detect the presence of a single-ended device on the bus.
[9] A hyphen preceding a signal name indicates that the signal is active low.

52 Elite 47 Product Manual, Rev. A

9.7 Electrical descr iption

ST446452W models use single-ended interface signals. These signals must be terminated with 110-ohm
active termination circuits at each end of the total cable. Single-ended circuits use open collector or three state
drivers. All of these models can be configured to provide the SCSI termination.

9.7.1 Single-ended drivers/receivers

Typical single-ended driver and receiver circuits are shown in Figure 13. Use terminator circuits only where the
disc drive is first or last in the daisy chain. See Note 1 following Figure 13.

Transmitter characteristics

Single-ended drives use an ANSI SCSI compatible open collector single-ended driver. This driver is capable of
sinking a current of 48 mA with a low level output voltage of 0.4 volt.

Receiver characteristics

Single-ended drives use an ANSI SCSI single-ended receiver with hysteresis gate or equivalent as a line
receiver.

Figure 13. Single-ended transmitters and receivers

Notes.

[1] Part of active terminator circuits. Non-removabl e LSI terminators, enabled in the drive with jumper plug TE

when it is the first or last in the daisy chain.
[2] ANSI SCSI compatible circuits.
[3] Total interface cable length should not exceed that specified in Section 9.6.3.1.
[4] Source of drive terminator power is an active circuit which has an input source voltage selected by jumper

plug TP. See Figure 7.
[5] Interface signal levels and logical sense at the drive I/O connector are defined as follows:

Vil (low-level input voltage) = 1.0 V maximum (signal true); minimum = Vss – 0.5 V.

Vih (high-level input voltage) = 1.9 V minimum (signal false); maximum = Vdd +0.5V.

Vihys (Input Hysteresis) = 425 mV minimum

Transmitter

(or transceiver)

Line Driver

Flat

Cable

Pair

[3]

[5]

[2]

[4]

[1]

110

Ohm

[4]

[1]

110

Ohm

Receiver

Line Receiver

[2]

TP

+2.85V +2.85V

TP

Elite 47 Product Manual, Rev. A 53

9.8 Terminator requirements

Internal disc drive I/O termination consists of active circuits contained i n an LSI module that is perm anently
mounted on the P CB. All single initiator/single target (non-daisy -chain) applications require you to ter minate
the initiator and drive.

Term ina te both ends of the SCSI bus with ANSI SCSI-2 stand ard alternative 2 (active) termination. Do not mix
active and passive terminators on the same SCSI bus.

Daisy-chain configurations require you to terminate only the units at each end of the daisy chain. Do not termi­nate any other peripherals on the chain.

Note. Remove the Enable SCSI Terminator (TE) jumper from J4A pins 19 and 20 whe n termi nators are not

required.

9.9 Terminator power

You can configur e termi nator power i n four different ways. Se e Section 8.1 for illust rations tha t show how to
place jumpers enabling each of the following terminator power configurations:

1. Drive accepts terminator power through SCSI bus pins 17, 18, 51, and 52.

2. Drive supplies power to the SCSI bus.

3. Drive provides power to its own terminators and to the SCSI bus terminator power line.
SCSI devices providing terminator power (TERMPWR) must have the following characteristics:
V TERM = 4.50 V to 5.25 V

800 mA minimum source drive capability

1.0 A maximum

54 Elite 47 Product Manual, Rev. A

9.10 Disc drive SCSI timing

T able 12: Disc drive SCSI timing

Description

Waveform
symbol [1]

Waveform
table [1] Typical timing Maximum timing

Target select time (no arbitration) T00 N/A <1 µs <250 µs
Target select time (with arbitration) T01 4.5-1,2 2.31 µs 2.36 µs
Target select to command T02 4.5-1 3.33 µs 3.34 µs
Target select to MSG out T03 4.5-2 1.51 µs 1.54 µs
Identify MSG to command T04 4.5-3 3.34 µs 3.36 µs
Command to status T05 4.5-5 Command dependent Command dependent
Command to data (para. in) T06 4.5-9 Command dependent Command dependent
Command to data (para. out) T07 4.5-10 Command dependent Command dependent
Command to data (write to data

buffer)

T08 4.5-10 Command dependent Command dependent

Command to disconnect MSG T09 4.5-6 Command dependent Command dependent
Disconnect MSG to bus free T10 4.5-6,14 0.64 µs 0.68 µs
Disconnect to arbitration (for reselect)

This measures disconnected CMD
overhead.

T11 4.5-6–b Command dependent Command dependent

Target win arbitration (for reselect) T12 4.5-7 2.8 µs
Arbitration to reselect T13 4.5-7 1.8 µs
Reselect to identify MSG in T14 4.5-7 1.34 µs
Reselect identify MSG to status T15 4.5-8 Command dependent Command dependent
Reselect identify MSG to data (media) T16 4.5-11 Command dependent Command dependent
Data to status T17 4.5-15 Command dependent Command dependent
Status to command complete MSG T18 4.5-5,8,15 1.0 µs
Command complete MSG to bus free T19 4.5-5, 8,15 0.75 µs
Data to save data pointer MSG T20 4.5-14 4.5 µs
Save data pointer MSG to

disconnect MSG

T21 4.5-14 0.75 µs

Command byte transfer T22 4.5-4 0.04 µs
Next command byte access 4.5-4
Next CDB byte access (byte 2 of 6) T23.6.2 4.5-4 0.55 µs 0.56 µs
Next CDB byte access (byte 3 of 6) T23.6.3 4.5-4 0.10 µs 0.10 µs
Next CDB byte access (byte 4 of 6) T23.6.4 4.5-4 0.09 µs 0.10 µs
Next CDB byte access (byte 5 of 6) T23.6.5 4.5-4 0.13 µs 0.14 µs
Next CDB byte access (byte 6 of 6) T23.6.6 4.5-4 0.13 µs 0.14 µs
Next CDB byte access (byte 2 of 10) T23.10.2 4.5-4 0.59 µs 0.60 µs
Next CDB byte access (byte 3 of 10) T23.10.3 4.5-4 0.14 µs 0.14 µs
Next CDB byte access (byte 4 of 10) T23.10.4 4.5-4 0.13 µs 0.14 µs
Next CDB byte access (byte 5 of 10) T23.10.5 4.5-4 0.12 µs 0.12 µs
Next CDB byte access (byte 6 of 10) T23.10.6 4.5-4 0.11 µs 0.12 µs
Next CDB byte access (byte 7 of 10) T23.10.7 4.5-4 0.10 µs 0.10 µs
Next CDB byte access (byte 8 of 10) T23.10.8 4.5-4 0.09 µs 0.10 µs

Elite 47 Product Manual, Rev. A 55

Notes.

[1] See the

SCSI Interface P roduc t Manual,

part number 777 38479, Section 4.5.
[2] Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3.
[3] Synchronous Transfer Period is determined by negotiations between an Initiator and a Dri ve. The Drive is

capable of setting periods as given in Section 9.5. See al so Sections 3.1.5.2 and 3.5.3.2 of th e

SCSI

Interface Produc t Manual,

part num ber 77738479, for a description of synchronous dat a transfer opera-

tion.

Next CDB byte access (byte 9 of 10) T23.10.9 4.5-4 0.13 µs 0.14 µs
Next CDB byte access (byte 10 of 10) T23.10.104.5-4 0.12 µs 0.12 µs

Data in byte transfer (parameter) T24 4.5-12 0.04 µs
Data out byte transfer (parameter) T25 4.5-13 0.04 µs
Next data in byte access (parameter) T26 4.5-12 0.10 µs 0.12 µs
Next data byte out access (parameter) T27 4.5-13 0.10 µs 0.12 µs
Data in byte transfer (media) [2] T28 4. 5-12 0.03 µs 0.04 µs
Data out byte transfer (media) [2] T29 4.5-13 0.03 µs 0.04 µs
Next data in byte access (media) [2] T30 4.5-12 0.10 µs 0.12 µs
Next data out byte access (media) [2] T31 4.5-13 0.10 µs 0.12 µs
MSG IN byte transfer T32 4.5-5,7,

4.5-8,14,15

0.09 µs 0.04 µs

MSG OUT byte transfer T33 4.5-2 0.04 µs
STA TUS byte transf er T34 4.5-5,8,

4.5-15

0.04 µs

Synchronous data transfer
characteristics:

Request signal transfer period [3] – – various 800 ns

Description

Waveform
symbol [1]

Waveform
table [1] Typical timing Maximum timing

Elite 47 Product Manual, Rev. A 57

10.0 Seagate technical support services

If you need assistance installing your drive, consult your dealer. Dealers are familiar with their unique system
configurations and can hel p you with s ystem conf li cts an d other technical iss ues. If you nee d additional assis­tance with your Seagate

®

drive or other Seagate products, use one of the Seagate technical support services

listed below.

SeaFONE® 1-800-SEAGATE

Seagate’s 800 number (1-800-732-4283) allows toll-free access to automated self-help services, providing
answers to commonly asked questions, troubleshooting tips, and specifications for disc drives and tape drives.
This service is available 24 hours daily and requires a touch-tone phone. International calle rs can reach this
automated self-help service by dialing 408-456-4496.

Online services

Using a modem, you can obtain troubleshooting tips, free utility programs, drive specifications and ju mpe r set­tings for Seagate’s entire product line. You can also download software for installing and analyzing your drive.

SeaNET

™

You can obtain techn ical information about Seagate produ cts over the Internet from Seagate’s World Wide
Web home page (http://www.seagate.com) or Seagate’s ftp server (ftp://ftp.seagate.com). You can also
send E-mail with your questions to DiscSupport @ Seagate.com or TapeSupport @ Seagate.com.

Seagate CompuServe forum

Online technical suppor t for Seagate products is available on CompuSer ve. To acces s our technical support
for u m, ty p e

go seagate

. This forum provides information similar to that found on SeaBOARD. In addition, you

can type questions or browse through previous questions and answers on the fo rum mess ages.

SeaBOARD

®

SeaBOARD is a com puter bulletin board system that contain s informa tion about Seagate disc a nd tape dr ive
products and is available 24 hours daily. Set your communication s software to eight data bits, no parity, a nd
one stop bit (8-N-1).

FAX services

SeaF A X

®

You can use a touch-tone telephone to access Sea gate’s automated FAX system to receive technical suppor t
information by return FAX . This serv ice is available 24 hours daily.

Seagate technical support FAX

You can FAX questions or comments to technical supp ort specialists 24 ho urs daily. Responses are sent dur­ing business hours.

Location Phone number

Australia 61-2-9756-2359
France 33 1-48 25 35 95
Germany 49-89-140-9331
Taiwan 886-2-2719-6075
Thailand 66 2-531-8111
UK 44-1628-478011
USA Disc: 405-936-160 0; Tape: 405-936-1630

Location Phone number

Australia 61-2-9756-5170
Germany 49-89-1430-5102
UK 44-1628-894084
USA Disc: 405-936-162 0; Tape: 405-936-1640

Location Phone number

Australia 61-2-9725-4052
France 33 1-46 04 42 50
Germany 49-89-1430-5100

58 Elite 47 Product Manual, Rev. A

Direct-support services

Seagate technical support

For one-on-one help, you can talk to a technical s upport specialist du ring local business hours. Before calling,
note your syste m conf igu ration and drive model n umbe r (ST

xxxx

).

SeaTDD™ 405-936-1687

Using a telecommunications device for the deaf (TD D), you can send q uestions or comment s 24 hours daily
and exchange messages with a technical suppor t specialist between 8:00

A.M

. to 12:15 P.M. and 1:30 P.M. to

6:00

P.M

. (Central time) Monday through Friday.

Customer service centers

Seagate direct OEM, Distribution, and Systems Integrator customers should contact their Seagate service rep­resentative for warranty information. Other customers should contact their place of purchase. Seagate offers
comprehensive customer support for all Seagate drives. These services are available worldwide.

Hong Kong 852-2368 7173
Japan 81-3-5462-2979
Korea 82-2-556-4251/7395
Singapore 65-488-7528
Taiwan 886-2-2715-2923
UK 44-1628-890660
USA Disc: 405-936-168 5; Tape: 405-936-1683

Location Phone number

Australia 61-2-9725-3366 (9:00

A.M

. to 5:00 P.M., Eastern time, M–F)

France 33 1-41 86 10 86 (9:30

A.M

. to 12:30 P.M., 2:00 P.M. to 5:00 P.M., M–F)

Germany Disc: 49-89-140-9332; Tape: 49-89-140-9333

(9:30

A.M

. to 12:30 P.M., 2:00 P.M. to 4:00 P.M., M–F)
Hong Kong 852-2368 9918
Korea 82-2-531-5800 (9:00

A.M

. to 12:00 P.M., 1:00 P.M. to 6:00 P.M., M–F)

Singapore 65-488-7584 (9:00

A.M

. to 12:00 P.M., 2:00 P.M. to 5:00 P.M., M–F)
Taiwan 886-2-2514-2237
UK 44-1628-894083 (10:00

A.M

. to 1:00 P.M., 2:00 P.M. to 5:00 P.M., M–F)

USA Please dial 1-800-SEAGATE or 408-456-4496 for the specific product telephone number.

(8:00

A.M

. to 1:15 P.M., 2:30 P.M. to 7:00 P.M., Central time, M–F)

Location Phone number FAX number

Asia Pacific and Australia 65-485-3595 65-488-7503
Europe, Middle East, and Africa 31-2031-67300 31-2065-3432 0
Japan 81-3-5462-2904 81 -3 -5462-2979
USA 1-800-468-3472 405-949-6740

Other Americas (Brazil, Canada, Mexico) 405-949-6706 40 5-949-6738

Manufacturer’s representatives

Brazil

MA Informatica 55-21-516-6649 55-21-516-5280

Canada

Memofix
Adtech

905-660-4936
905-812-8099
1-800-624-9857

905-660-8738
905-812-7807

Mexico

Abicom Seamax SA DE CV 525-546-4888 525-546-4888

Southern Europe

Caesar Italia 39-688-18149 39-688-02103

Location Phone number

Elite 47 Product Manual, Rev. A 59

Index

Numerics

12 V current profile 22
3rd party reserve

39

A

abort

SCSI message

37

abort-tag

SCSI message

37

AC power requirements

21

access time

9

acoustics

27

actual retry count bytes

39

actuator

7

actuator assembly

5

adaptive caching

44

adaptive read look-ahead

13

air cleanliness

27

air flow

16, 23, 35

altitude

25

ambient temperature

35

ANSI SCSI documents

4

arbitrating syste m

44

asynchronous data transfer

44

asynchronous event notification

44

attention condition

44

Australia/New Zealand Standard

4

auto write and read reallocation

6

automatic shipping lock

5

B

backward compatibility 5
Barracuda 9 Installation Guide

4, 7, 8

bits

9

block format

38

buffer segment

12

buffer space

11

bus device reset

SCSI message

37

busy status

44

BYTCHK bit

40

bytes

9

bytes from index

38

bytes per sector

40

C

cable characteristics

single-ended circuits

47

cable requirements

47

cabling

48

cache buffer

7

cache control

prefetch/multi-segmented

11

cache operation

11

cache statistics page

38

caching parameters page

39

caching write data

12

capacities

7

unformatted

9

CDB

12

CE Marking

3

certifications

3

change definition command

38

changeable values

42

characteristics

9

check condition status

44

clear queue

SCSI message

37

command complete

SCSI message

37

command queuing

7

commands

interface

38

compare command

38

condition met/good status

44

configuration jumpers, function

34

configure drive options

31

connector

non-shielded 68-pin

49

contingent allegiance condition

44

continue I/O process

SCSI message

37

control mode page

39

controller

6

cooling

16, 23, 35

copy and verify command

38

copy command

38

C-Tick Marking

3

current

operating

21

profile, 12 V

22

values

42

D

daisy-chain interface cabling 48
data buffer

7

data page out

12

data rate

9

data transfer

9, 45

data transfer period

45

data transfer protocols

6

date code page

38

DC cable and connector

45

DC power connector

45

DC power requirements

21

DCRT bit

38

dedicated landing zone

5, 6

default

34

default mode parameter

31

default values

41

60 Elite 47 Product Manual, Rev. A

defect and error management 29
deferred error handling

44

delayed motor start

power requirements

21

description

5

devices

multiple

31

differential interface circuits available

44

dimensions

physical

27

disc drive SCSI timing

54

disc rotational speed

9

disconnect

SCSI message

37

disconnect/reconnect

44

disconnect/reconnect comman d

39

documentation

4

DPO bit

40

DPRY bit

38

drive characteristics

9

drive default mode parameter

31

drive ID

31

drive ID select jumper connector

31

drive internal defects and errors

29

drive mounting

36

drive orientation

35

drive power

31

drive primary defects list

29

drive select headers

45

drive volume

31

drivers/receivers

6

single-ended

52

DS bit

38

DSP bit

38

DU bit

38

E

EFT defect list 29
electrical description

52

electrical specifications

21

electromagnetic interference (EMI)

15

electromagnetic susceptibility

27

EMC compliance

3

emissions

36

environmental interference

15

environmental limits

23

environmental requirements

15

error management

29

error rates

15

error recovery

29

error recovery page

39

error recovery process

16

error-correction code

6

errors

15, 16

ETC bit

38

European Union requirements

3

extended messages

SCSI message

37

extended sense

39

extent reservation

39

F

fan 35
Fast-20

5

features

6

miscellaneous

44

field pointer bytes

39

firmware

6

firmware corruption

40

firmware download option

40

firmware numbers page

38

flash EPROM

41

flaw reallocation performance

10

format command execution time

9

format page

39

format unit command

38

formatted capacities

7

formatting

31

function description, configuration jumpers

34

G

good status 44
ground

36

H

hardware error 16
HDA. See head and disc assembly
head and disc assembly

5, 6, 35

ground

36

head of queue tag

SCSI message

37

high level format

31

host adapter

31

host system

31

humidity

25

I

I/O circuits

single-ended

47

IC terminators

7

identified defect

29

identify

SCSI message

37

ignore w ide residue

SCSI message

37

IMMED bit

38

implemented operating definitions page

38

information exceptions control page

39

initiate re c ov e ry

SCSI message

37

initiator detected error

SCSI message

37

inquiry command

38

Elite 47 Product Manual, Rev. A 61

Inquiry data 41
Inquiry Vital Product Data pages

41

installation

31

instructio ns

31

interface

45

interface cable requirements

47

interface cabling

48

interface commands

38

interface data

9

interface description

47

interface messages

37

interface requirements

37

interface signals

single-ended

52

interleave

6, 9

intermediate/condition met/good status

44

intermediate/good status

44

internal data rate

9

internal drive characteristics

9

IP bit

38

J

jumper 7, 31, 34
jumper connectors

31

ST19171W/WD

32

jumper function description

34

jumper header

34

jumper plug

31

jumper settings page

38

jumpers

function description

34

L

linked command complete

SCSI message

37

linked command complete with flag

SCSI message

37

lock-unlock cache command

38

log select command

38

log sense command

38

logical block address

11

logical segments

11

low level fo rma t

31

LP bit

38

LSI circuitry

7

LSI module

53

M

magnetoresistive heads 5
mating connectors

47, 48

mean time between failures

7, 15, 16, 23

mechanical specifications

27

media characteristics

7

medium error

16

message parity error

SCSI message

37

message phase

45

message reject

SCSI message

37

messages

interface

37

minimum sector interleave

9

miscellaneous features

44

mode parameters

41

mode select command

39

mode sense command

39, 41, 43

modify data pointer

SCSI message

37

motor start option

11

mounting

6, 26, 36

mounting configuration dimensions

“W” and “WD” models

28

mounting orientation

35

MR heads

5
MTBF. See mean time between failures
multiple d ev ic e s

31

N

no operation

SCSI message

37

noise immunity

22

non-medium error page

38

non-shielded 68-pin SCSI device connector

49

notch and partition page

39

O

operating options 31
option jumper

31

location

31

option select headers

45

option select jumper connector

31

options

8

operating

31

ordered queue tag

SCSI message

37

P

pages supported list 38
parameter rounding

44

partition or logical drive

31

PCB

31

component locations

24

PCBA

35

ground

36

PCR bit

38

peak to peak measurements

22

performance

7

performance characteristics

detailed

9

general

9

physical interface

45

“W” and “WD” model drives

46

62 Elite 47 Product Manual, Rev. A

physical sector format 38
physical specifications

21

pin assignments

single-ended wide cable

50

power condition page

39

power dissipation

23

power requirements

21

power sequencing

22

power-on

31

prefetch

11

operation

12

prefetch command

39

preventive maintenance

15, 17

printed circuit board assembly (PCBA)

35

PRML read channel electronics

5

Q

queue

background processing

7

queue full status

44

queue tag messages

SCSI message

37

queue tagging

44

R

radiated emissions 36
random data

15

RCD bit

11

read buffer command

39

read capacity command

39

read command

39

read defect data command

39

read error counter page

38

read error rates

15

read errors

15

read extended command

39

read long command

39

read look-ahead

13

read retry count

29

read/write heads

9

reallocation of defects

6

reassign blocks command

39

receive diagnostic results command

39

receiver characteri sti cs

52

receiver circuits

single-ended

52

receivers

6

reference documents

4

regulatory requirements

3

release

SCSI message

37

release command

39

reliability

7, 16

specifications

15

remote switch

31

repair

17

reporting actual retry count

44

REQ/ACK offset

45

request sense command

39

reservation conflict status

44

reserve command

39

reset condition

44

restore pointers

SCSI message

37

rezero unit command

39

rigid disc drive geometry page

39

rotational latency

average

9, 10

S

S.M.A.R.T . 7, 18
save data pointer

SCSI message

37

saved values

41

SCAM Plug-n-Play

31

SCSI bus cable

31

SCSI bus conditions

44

SCSI command

29

SCSI daisy-chain interface cabling

48

SCSI ID

31

SCSI interface cable requirements

47

SCSI interface commands

38

SCSI interface connector

45

SCSI interface data

9

SCSI interface messages

37

SCSI interface physical description

47

SCSI Interface Product Manual

1, 4, 5

SCSI status supported

44

SCSI timing

54

SCSI-3 (Fast-20) interface

5

Seagate support service

31

search data equal command

39

search data high command

39

search data low command

39

sector size

6, 10

seek

9

seek command

40

seek errors

15, 16

seek extended command

40

segmented caching

44

self-diagnostics

6

Self-Monitoring Analysis and Reporting Technolog y.

See S.M.A.R.T.

send diagnostics page

40

service

16

life

15, 17

philosophy

17

tools

17

servo data

5, 6

set limits command

40

shipping pack

8

shock

25

non-operating

25

operating—abnormal

25

Elite 47 Product Manual, Rev. A 63

operating—normal 25
packaged

25

signal ground

36

simple queue tag

SCSI message

37

single-ended drivers/receivers

52

single-ended I/O circuits

47

single-ended interface signals

52

SMP = 1 in Mode Select command

44

spare reallocation sectors

7

specifications

electrical

21

mechanical

27

physical

21

reliability

15

speed

9

spindle

7

spindle brake

7

Standard Inquiry data

41

standards

3

start and stop commands

7

start unit/stop unit command

40

start/stop time

11

status supported

44

STIR algorithm

7

STPF bit

38

support services

57

supported diagnostics pages

39, 40

synchronize cache command

40

synchronous data transfer

44, 45

periods supported

45

synchronous data transfer req.

SCSI message

37

synchronous transfer rate

9

T

target transfer disable

SCSI message

37

technical support services

57

temperature

ambient

35

non-operating

25

operating

23

terminate I/O process

SCSI message

37

terminator

31, 53

circuits

52

enable jumper TE

31

power

53

requirements

31, 53

test unit ready command

40

TMC bit

38

tracks

9

transfer rate

9

translate page

39, 40

transmitter characteristics

52

troubleshooting

17, 57

TSD bit

38

U

Ultra SCSI 5
unformatted capacities

7

unit attention page

39

unit serial number page

38

unrecoverable error

15

unrecoverable write errors

15

V

verify command 40
verify error counter page

38

verify error recovery page

39

vibration

25, 27

vital product data page

38, 41

VS

38

W

warranty 17
wide data transfer request

SCSI message

37

write and verify command

40

write buffer command

40

write cache enable

12

write command

40

write error counter page

38

write errors

15

write extended command

40

write long command

40

write retry count

29

write same command

40

X

XD read 40
XD write

40

Xor control page

39

XP write

40

Z

zero latency read 44
zone bit recording

6

Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, California 95066-4544, USA

Publication Number: 83329280, Rev. A, Printed in USA