Seagate Cheetah 18LP ST318203FC, Cheetah 18LP ST39103FC Product Manual

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Cheetah 18LP FC Disc Drive

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ST318203FC

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ST39103FC

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Product Manual, Volume 1

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Cheetah 18LP FC Disc Drive

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ST318203FC

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ST39103FC

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Product Manual, Volume 1

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Publication number: 83329420, Rev. D

Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, Inc. Cheetah, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, Inc. or one of its subsidiaries. All other 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

Revision Date Writer/Engineer Sheets Affected

A 03/29/99 L. Newman/P. Kassel Class A Release B 05/20/99 L. Newman/D. Rusch ECR: DJD51090. C 06/16/99 L. Newman/D. Rusch ECR: DJD51095. D 07/30/99 L. Newman/D. Rusch ECR: DJD51099.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D v

Contents

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

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

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

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

2.1.2 Electromagnetic compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

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

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

3.2 Media description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.3 Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.4 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.5 Unformatted and formatted capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

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

3.8 Factory-installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.9 User-installed accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

4.1 Internal drive characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Seek performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.3 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.4 Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.5 Cache operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1

4.5.1 Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

5.0 Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1 Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.1 Environmental interference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.2 Write errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.3 Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.2 Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4

5.2.1 Mean time between failure (MTB F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.2 Field failure rate vs time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.3 Preve ntive maintenan ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.4 Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.5 Service philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.6 Service tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.7 Hot plugging the drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.8 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.2.9 Product warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.0 Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1 AC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.2 DC power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.2.1 Conduct ed noise immu nity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.2 Power sequenc ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.3 Current profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

6.4 Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4

6.4.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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

vi Cheetah 18LP FC Product Manual, Rev. D

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

6.4.4 Shock and vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

6.4.7 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

6.5 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

7.0 Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

7.1 Drive internal defects/errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

7.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

7.3 FC-AL system errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.1 Drive ID/option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.2 LED connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.2.1 J6 connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

8.3 Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

8.4 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

8.4.1 Air flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

8.5 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

8.6 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

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

9.1 FC-AL features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.1 Fibre Channel link service frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.2 Fibre Channel task managem ent functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.3 Fibre Channel task managem ent respons es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.4 Fibre Channel port login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

9.1.5 Fibre Channel port login accept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.1.6 Fibre Channel Proc ess Login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.1.7 Fibre Channel Proc ess Login Accept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.1.8 Fibre Channel fabric login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

9.1.9 Fibre Channel fabric accept login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

9.1.10 Fibre Channel Arbitrated Loop options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.2 Dual port support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.3 SCSI commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

9.3.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

9.3.2 Mode Sense data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

9.4 Miscellaneous operating features and con ditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5 FC-AL physical interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.5.2 Connector requirem ent s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.3 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.5 FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.6 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.7 Fault LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.8 Active LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.9 Enable port bypass signal s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

9.5.10 Motor start controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

9.5.11 SEL_6 through SEL_0 ID lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

9.6 Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

9.6.1 TTL input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

9.6.2 LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

9.6.3 Differential PECL output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

9.6.4 Differential PECL input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

10.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Cheetah 1 8LP FC P r od uc t Manual, Rev. D vii

List of Figures

Figure 1. Cheetah 18LP FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Cheetah 18LP FC disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Typical ST318203FC drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4. Typical ST39103FC drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 5. Typical ST318203FC drive +5V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 6. Typical ST39103FC drive +5V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 7. DC current and power vs. input/output operations per second . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 8. DC current and power vs. input/output operations per second . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 9. Locations of PCBA components listed in Table 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 10. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7

Figure 11. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 12. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 13. LED indicator connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 14. Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 15. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 16. Port bypass circuit physical interconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 17. FC-AL SCA device connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 18. J6 connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 19. FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4

Figure 20. Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 21. Receive eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 1

1.0 Scope

This manual describes Seagate Technology®, Inc. Cheetah 18LP FC (Fibre Channel) disc drives. Cheetah 18LP FC dr ives support the Fibre Chann el Ar bitrated Lo op and SCSI Fi bre Chann el Pr otoco l specifi-

cations to the extent described in this manual. The Fibre Channel Interface Manual (part number 77767496) describes the general Fibre Channel Arbitrated Loop characteristics of this and other Seag ate Fibre Channel drive s.

Figure 1.

Cheetah 18LP FC

family disc drive

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 3

2.0 Applicable standards and reference documentation

The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends upon its hos t equipment to provide adequat e power and environment in order to ac hieve optimum performance and c ompliance with applicable industry and g overnmental regu lations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In part icular, the drive must be securely mounted in order to guarantee the specified pe rformance c haracteristics. Mounting by bottom holes must meet the requirements of Section 8.5.

2.1 Standards

The Cheetah 18LP FC family complies with S eagate standards as noted in the appropria te sections of this manual and the Seagate Fibre Channel Interface Manual, part number 77767496.

The Cheetah 18LP FC disc drive is a UL recognized component per UL1950, CSA certified to CAN/CSA C22.2 No. 950-95, and VDE certified to VDE 0805 and EN60950.

2.1.1 Electromagnetic compatibility

The drive, as deliv e re d , is designed for system integra ti o n a n d installation in to a suitab le e nclosure prior to u se. As such the drive is supplied as a subassembly and is not subject to Subp art B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communications.

The design characteristics of the drive serve to minimize radiation when installed in an enclosure 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 Department of Communications when properly packaged. However, it is the user’s responsibility to assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure does not provide adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, with the shields grounded to the enclosure and to the host controller.

2.1.1.1 Electromagnetic susceptibility

As a component assembly, the drive is not required to meet any susceptibility performance requirements. It is the responsibility of those integrating the dri ve within their s ystems to perform thos e tes ts req uired a nd des i gn their system to ensure that equipment operating in the same system as the drive or external to the system does not adversely affect the performance of the drive. See Section 5.1.1 and Table 1, DC power requirements.

2.1.2 Electromagnetic compliance

Seagate uses an independ ent laboratory to confir m compliance with the direct ives/standards 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 microproces sors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

• Mouse

Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate 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 Electromagnetic Compatibility Directive 89/336/EEC of 03 May 1989 as amended by Directive 92/31/EEC of 28 April 1992 and Directive 93/68/EEC of 22 July 1993.

4 Cheetah 18LP FC Product Manual, Rev . D

Australian C-Tick

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 Man- agement Agency (SMA).

2.2 Reference documents

Cheetah 18LP FC Installation Guide

Seagate par t number: 83329430

Fibre Channel Interface Manual

Seagate par t number: 77767496

ANSI Fibre Channel Documents

X3.230-1994 FC Physical and Signaling Interface (FC-PH) X3.297.1997 FC-PH-2 Fibre Channel Physical and Signaling Interface-2 X3.303.1998 FC-PH-3 Fibre Channel Physical and Signaling Interface-3 X3.272-1996 FC Arbitrated Loop (FC-AL) X3.269-1996 Fibre Channel Protocol for SCSI (FCP) NCITS TR-19 Private Loop SCSI Direct Attach (PLDA) NCITS TR-20 Fabric Loop Attachment (FC-FLA) SFF-8045 Specification for 40-pin SCA-2 Connector with Parallel Selection. SFF-8067 Specification for 40-pin SCA-2 Connector with Bidirectional Enclosure Services

Interface.

ANSI Small Computer System Interface (SCSI) Documents

X3.131-1994 (SCSI-2) X3.270-1996 (SCSI-3) Architecture Model NCITS 305-199X (SCSI-3) Enclosure Services 30553-001 Specification for Acoustic Test Requirement and Procedures

In case of conflict between this document and any referenced document, this document takes precedence.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 5

3.0 General description

CheetahTM 18LP FC drives combine dual stripe m agneto re sistive (DSMR) heads, partial respons e/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Fibre Channel interface to provide high performance, high capacity da ta storage for a variety of system s includin g engi neering workstations, network servers, mainframes, and supercomputers.

Cheetah 18LP FC drives are random access storage devices designed to support the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fi bre Channel Protocol as de scribed in the ANS I specifications, this document , and the Fibre Channel Interface Manual (part number 77767496) which describes the general interface characteristics of this dri ve. Cheetah 18 LP FC drives are class ified as intelligent peripherals and pr ovide level 2 conformance (highest level) with the ANSI SCSI-1 standard.

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

See Figure 2 for an exploded view of the drive. Never disassemble the HDA. This exploded view is for information only. Do not attempt to service items in the sealed enclosure (heads, media, actuator, etc.) as this requires special facilities. The drive contains no parts replaceable by the user and opening the HDA for any reason voids your warranty.

Figure 2. Cheetah 18LP FC disc drive

Cheetah 18LP FC dr ives use a dedicated landing zone at the innermos t radius of the media to el iminate the possibility of destroying or degrading data by landing in the data zone. The heads automatically go to the landing zone when power is removed from the drive.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The shipping lock disengages and t he head load process begins when power is applied to the drive.

Cheetah 18LP FC drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments and related reliability concerns.

The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that provides excellent performance with minimal power dissipation.

6 Cheetah 18LP FC Product Manual, Rev . D

3.1 S tandard fe atures

Cheetah 18LP FC drives have the following standard features:

• Integrated dual port FC-AL controller

• Concurrent dual port transfers

• Support for FC arbitrated loop, private and public attachment

• Differential copper FC drivers and receivers

• Downloadable firmware using the FC-AL interface

• Support s SCSI enclosure services via interface connector

• 128-deep task set (queue)

• Support s up to 32 initiators

• Drive selection ID and configuration options are set on the FC-AL backpanel or through interface com-

mands. Jumpers are not used on the drive.

• Supports SCSI Enclosure Services through the interface connector

• Fibre Channel worldwide name uniquely identifies the drive and each por t

• User-selectable logical block size (512 to 4,096 bytes per logical block)

• Selectable frame sizes from 128 to 2,112 bytes

• Industry standard 3.5-inch low profile form factor dimensions

• Programmable logical block reallocation scheme

• Flawed logical block reallocation at format time

• Programmable auto write and read reallocation

• Reed-Solomon error correction code

• Sealed head and disc assembly (HDA)

• No preventive maintenance or adjustments required

• Dedicated head landing zone

• Automatic ship ping lock

• Embedded Grey Code track address to eliminate seek errors

• Self-diagnostics performed at power on

• 1:1 interleave

• Zone bit recording (ZBR)

• Vertical, horizontal, or top down mounting

• Dynamic spindle brake

• 1,024 Kbyte data buffer. See Section 4.5

• Embedded servo design

• Reallocation of defects on command (Post Format)

• Fibre Channel interface transports SCSI protocol

3.2 Media description

The media used on the drive has a diameter of approximately 84 mm (approximately 3.3 inches). The aluminum substrate is coated with a thin film m agnetic material, overcoated with a proprietar y protective layer for improved durability and environmental protection.

3.3 Performance

• Programmable multi-segmentable cache buffer

• 106 Mbytes/sec maximum instantaneous data transfers per port.

• 10,016 RPM spindle; average latency = 2.99 msec

• Command queuing of up to 128 commands

• Background processing of queue

• Supports start and stop commands

• Adaptive seek velocity; improved seek performance

3.4 Reliability

• 1,000,000 hour MTBF

• LSI circuitry

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 7

• Balanced low mass rotary voice coil actuator

• Self-Monitoring Analysis and Reporting Te chnology (S.M.A.R.T.)

• Dithering

3.5 Unformatted and formatted capacities

Formatted capacity depends on the spare reallocation sectors scheme selected, the number of data tracks per sparing zone, and the number of alternate sectors (LBAs) per sparing zone. The following table shows the standard OEM model capacity:

Standard OEM models are formatted to 512 bytes per block. You can order other capacities by requesting a different sparing scheme and logical block size.

The sector size is selectable at format time. Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted capacities than those listed. ST318203FC and ST39103FC dr ives use a zone sparing scheme. The dr ive is divided into frequency zones wi th a variable number of spares in each zone.

3.6 Programmable drive capacity

Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select (6) parameter l ist table in the Fibre Channel Interface Manual, par t number 77 67496. A value of zero in the Number of Blocks field indicates that the drive will not change the capacity it is currently formatted to have. A number other than zero and less than the maximum number of LBAs in the Number of B locks field changes the total drive capacity to the value in the Number of Blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.

3.7 Factory-installed accessories

OEM standard drives are shipped with the Cheetah 18LP FC Installation Guide (par t number 83329 430).

3.8 Factory-installed options

You may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options):

• Other capacities can be ordered depending on sparing scheme and sector size requested.

• Single-unit shipping pack. The drive is nor mally shipped i n bulk packaging to provide max imum protection

against transit damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users planning single unit distribution should specify this option.

• The Cheetah 18LP FC Installation Gui de, part number 83329 430, is usually included with each standard OEM drive shipped, but extra copies may be ordered.

3.9 User-installed accessories

The following accessories are available. All kits may be installed in the field.

• Evaluation kit, part number 73473641. This kit provides an adapter card (“T-card ”) to allow cable connections for two FC ports and DC power. Two twin axial cables, 6 feet in length, are included for the input and output connections to the FC interface.

• Single-unit shipping pack.

Formatted Unformatted

ST318203FC 21EB390h (18.20) Gbytes 21.6 Gbytes ST39103FC 10F59C8h (9.1) Gbytes 10.8 Gbytes

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 9

4.0 Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah 18LP FC drives.

4.1 Internal drive characteristics

ST318203FC ST39103FC

Drive capaci ty 18.2 ................ .. ........9.10........... ................... ..... Gbytes ( formatted, rounded of f value)

Read/write data heads 12 .............................6

Bytes per track 153,284 - 229,045.... 153,284 - 229,045.............Bytes (aver age, rounded of f values)

Bytes per surface 1,913 ................ .. ......1,913......... ............ .. ..........Mbytes (unf ormatted, rounded off v alue)

Tracks per surface (total) 9,801 ........................ 9,801......... ........................ Tracks (user accessible)

Tracks per inch 12,580 ...................... 12,580....... ........................ TPI

Peak bits per inch 252 .......... ............ .....252........ .... ............ .. ..........KBPI

Internal data rate 193-300................. .. .193-300..... ........................Mbits/sec (variable with zone)

Disc rotation speed 10,016 ...................... 10,016....... ........................ rpm (+

0.5%)

Avg r otat ional latency 2.99 ........... .. .......... .. .2.99.......... .........................msec

4.2 Seek performance characteristics

See Section 9.5, "FC-AL physical interface" on page 51 and the Fibre Channel Interface Manual (part number

77767496) for additional timing details.

4.2.1 Access time

4.2.2 Format command execution time for ≥ 512-byte sectors

Including cont roller overhead (without disconnect)

1, 2

(msec)

1. Execut ion time measured from receipt of the FCP Command to the FCP Response.

2. Assumes no errors and no sector has been relocated.

Not including controller overhead (without disconnect)

1,2

(msec)

Read Write Read Write

Average Typical

3,4

3. Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as

measured on a representative sample of drives.

4. Access time = controller overhead + average seek time.

Access to data = contr oller overhead + average seek time + latency time.

5.4 6.0 5.2 5.8

Single track Typical

3,4

0.7 0.9 0.5 0.7

Full s troke Typical

3,4

12.2 13.2 12.0 13.0

ST318203FC ST39103FC

Maximum (with verify) 60 minutes 60 minutes Maximum (without verify) 30 minutes 30 minutes

10 Cheetah 18LP FC Product Manual, Rev. D

4.2.3 General performance characteristics

4.3 Start/stop time

If the Motor Start option is disabled, the drive becomes ready within 30 seconds after DC power is applied. If a recoverable error condition is detected during the start sequence, the drive executes a recovery procedure and the time to become ready may exceed 30 s econds. Stop time is less than 30 seconds (maximum) from removal of DC power.

If the Motor Start opt ion is enabled, the internal controller accepts the comm ands listed in the Fibre Channel Interface Manual less than 3 seconds after DC power has been applied. After the Motor Star t command has been received, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure). The Motor Start comma nd can also be used to command the dr ive to stop the spindle.

There is no power control switch on the drive.

4.4 Prefetch/multi-segmented cache control

The drive provides a prefetch (read look-ahead) and multi-segmented cache control algor ithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To sele ct this feature, the host sends the Mode Sele ct command with the proper values in the applicable bytes in page 08h. Prefetch and cache operations are independent features from the standpoint that each is enabled and disabled independently using the Mode Selec t command; however, in actual operation, the prefetch feature overlaps cache operation somewhat as described in sections 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 16.

Minimum sector interleave 1 to 1

Data buffer to/from disc media (one 512-byte logical block)*

Minimum 22.7 MBytes/sec Average 29.5 MBytes/sec Maximum 36.2 MBytes/sec

Fibre Channel Interface maximum instantaneous transfer rate 106 Mbytes/sec* per

port (dual port = 212 Mbytes/sec*)

Logical block sizes

Default is 512-byte data blocks Variable 512 to 4, 096 bytes per sector in even number of bytes per sector. If n (number of bytes per sector) is odd, then n-1 will be used.

Read/write consecutive sectors on a tr ack

Yes

Flaw reall ocation performance impact (for fla w s reallocated at format time using the spare sect ors per sparing zone real location scheme.)

Negligible

Overhead time for head switch in sequential mode

0.8 msec

Overhead time for one track cylinder switch in sequential mode

1.2 msec (typical)

Average rotational latency

2.99 msec

*Assumes no error s and no reloca ted logi cal b loc k s. Rat e measur ed fro m the s tart of the first logi cal block transf er to or from the host.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 11

4.5 Cache operation

Note.

Refer to the Fibre Channel Interface Manual for more detail concerning the cache bits.

Of the 1,024 kbytes physical buffer space in the drive, 840 kbytes can be used as a cache. The buffer can be divided into logical segments (using Mode Select Page 08h, byte 13) from which data is read and to which data is written.

The drive keeps track of the logical block addresses of the data stored in eac h segment of the buffer. If the cache is enabled (see RCD bit in the Fibre Channel Int erface Manual), dat a requested by the host with a read command is retrieved from the buffer, if possible, before any disc access is initiated. If cache operation is not enabled, the buffer (still segmented with the required number of segments) is still used, but only as circular buffer s egments during disc medium read operations (disregarding Prefetch operation f or t h e 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 throu gh som e buffer segment on the way to the host. On a c ache 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 rules. See the explanation provided with the information about Mode Page 02h (disconnect/ reconnect control) in the Fibre Channel Interface Manual.

The following is a simplified description of the prefetch/cache operation:

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 is not in any cache segment, the drive fetches it and any

remaining requested logical block addresses from the disc and puts them in a segm ent of the cache. The drive transfers the remaining requested logical blocks from the cache to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.

3. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point.

Case B

—A Read command requests data, and the first logical block is not in any segment of the cache:

1. The drive fetches the requested logical blocks from the disc and transfers them into a segment, and then

from there to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.

2. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point.

During a prefetch, the drive crosses a c ylinde r boundary to fetch data only if t he Di sco ntinuity (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.

Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The wrap-around capability of the individual segments greatly enhances the cache’s overall performance, allowing a wide range of user-se lectable configurations. The drive supports op eration of any integer number of segments f rom 1 to 16. Divide t he 967. 5 K bytes i n the buffer by the number of segments to get the segment size. Default is 3 segments.

Note.

The size of each segment is not reported by Mode Sense c ommand page 08h, bytes 14 and 15. The value 0XFFFF is always reported regardl ess of the ac tual size of the se gme nt. Sendi ng a s ize spec ification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. 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 an unchangeable parameter.

4.5.1 Caching write data

Write caching is a wri te operation by the drive that makes use of a drive buffer storage area where the dat a t o be written to the medium is stored while the drive performs the Write command.

If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future read cache hits. T he s am e buffer space and segmentation is used as set u p for read func tions. The buffer segmentation scheme is set up or changed independently, having nothing to do with the state of RCD . When a write command is issued, if RCD=0, 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.

12 Cheetah 18LP FC Product Manual, Rev. D

If the number of write data logical blocks exceed 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; however, the drive does not overwrite data that has not yet been written to the medium.

If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been transferred into the cache, but before the data has been written to the medium . If an error occurs while writing the data to the medium, and Good status has already been returned, a deferred error will be generated.

The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon completion of a Synchronize Cache command, all data received from previous write commands will have been written to the medium.

Table 16 shows the mode default settings for the drive.

4.5.2 Prefetch operation

If the Prefetch feature is enabled, data in c ontiguous logical blocks on the disc immediately beyond that wh ich was requested by a Read command are retrieved and stored in the buffer for immediate transf er from the buffer to the host on subs equent Read com man ds t hat reques t t hos e logical blocks (this is tr ue 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.

To enable Prefetch, use 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 segments, the host can limit the amount of prefetch data to optimize system performance. The Max Prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11).

During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters page 08h, byte 2, bit 4 is set to 1 (Discontinuity--DISC bit).

When prefetch (read look-ahead) is enabled (enabled by DRA = 0 ), it operates under the control of A RLA (Adaptive Read Look-Ahead). If the host uses software interleave, ARLA enables pref etch of contiguous blocks from the disc when it s enses that a p refetch hit will likely occur, even if two consecutive read operations were not for physically contiguous blocks of data (e.g. “software interleave”). ARLA disables prefetch when it decides that a prefetch hit will not likely occur. If the host is not using software interleave, and if two sequential read 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.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 13

5.0 Reliability specifications

The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints

5.1 Error rates

The error rates stated in this manual assume the following:

• The drive is operated in accordance with this manual using DC power as defined in paragraph 6.2, "DC power requirements."

• The drive has been formatted with the FC-AL Format command.

• Errors caused by media defects or host system failures are excluded from error rate computations.

• Assume random data.

5.1.0.1 Interface errors

An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC error. The total error rate for a loop of devices is the sum of the individual device error rates.

5.1.1 Environmental interference

When evaluating systems operation under conditions of electromagnetic interference (EMI), the performance of the drive within the s ystem is co nsidered acceptable if the drive does not g enerate an unrecoverable condition.

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

• is not detected and corrected by the drive itself

• is not detected from the error or fault status provided through the drive or FC-AL interface

• is not recovered by normal drive or system recovery procedures without operator intervention

5.1.2 W rite err ors

Write errors can occur as a result of media defects, environmental interference, or equipment malfunction. 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 that cannot be c orrecte d wi thin two at tempts at writing the record with a read verify after each attempt (excluding media defects).

5.1.3 Seek errors

A seek error is defined as a failure of the drive to position the heads to the address ed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (15h) is repo rted with a Medium error (3h) or Hardware error (4h) repo rted in the

See k error ra t e :

Less than 10 errors in 10

seeks

Read Error Rates

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

Recovered Data

Less than 10 errors in 10

bits transferred (OEM default settings)

Unrecovered Data

Less than 1 sector in 10

bits transferred

Miscorrected Data

Less than 1 sector in 10

bits transferred

Interface error rate:

Less than 1 error in 10

bits transferred with minimum receive eye.

Less than 1 error in 10

bits transferred with typical receive eye.

See Section 9.6.4, "Differential PECL input." on page 59 MTBF: 1,000,000 hours Service life: 5 years Preventive maintenance: None required

14 Cheetah 18LP FC Product Manual, Rev. D

Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are class ified a s failures for MTBF calculations. Refer to the Fibre Channel Interface Manual, part number 77767496, for Request Sense informa- tion.

5.2 Reliability and service

You can enhance the reliab ility of Cheetah 18L P FC disc drives by ensuring that the drive receives adequat e cooling. Section 6.0 provides recommended air-flow information, temperature me asurements, and othe r information, which you can use to enhance the service life of the drive.

5.2.1 Mean time between failure (MTBF)

The production disc drive achieves an MTBF of 1,000,000 hours when operated in an environment that ensures the case temperatures spec ified in Section 6.4.1 a re not exceeded. Shor t-term excursions up t o the specification limits of the operating environment will not affect MTBF performanc e. Op erating the dr ive at case temperatures above these values wil l adversely affect the drive’s ability to meet specifications. See Section 6.4, "Environmental limits".

The MTBF target is specified as device power-on hours (POH) for all drives in service per failure. The following expression defines MTBF:

Estimated power-on operating hours means power-on hours per disc drive times the total number of disc drives in service. Each disc drive must have accumulated at least nine months of operation. Data is calculated on a rolling average base for a minimum period of six months.

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 during 20% of power-on hours

• Operating at nominal voltages

• System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded. Drive failure means any stoppage or failure to meet defined specifications caused by drive malfunction. A S.M.A.R.T. predictive failure indicates that the drive is deteriorating to an imminent failure and is considered

an MTBF hit.

5.2.2 Field failure rate vs time

The expected field failure rate is liste d b elo w. Drive utiliz ation will var y. An estimate rang e of uti liz a t ion is :

• 720 power-on hours (POH) per month

• 250 on/off cycles per year

• Read/seek/write operation 20% of POH

• System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not

exceeded.

Month P arts per million (PPM)

1 2,364 2 1,422 3 1,403 4 1,391 5 1,317 6 1,255 7 1,162 8+ 1,025

MTBF per measurement period = Estimated power-on operating hours in the period

Number of drive failures in the period

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 15

Failure rate is calcula t ed as follows:

• No system-induced failures counted

• PPM targets include 30% no defect found and handling failures

• Based on 1,000,000 MTBF and 720 POH per month

• Month 1’s rate includes a 300 PPM installation failure

5.2.3 Preventive maintenance

No routine scheduled preventive maintenance is required.

5.2.4 Service life

The drive has a useful service li fe of five years. Depot repair or replacement of major par ts is permitted during the lifetime.

5.2.5 Service philosophy

Special equipment is required to repair the d rive HDA. To achieve the above service life, repairs must be performed only at a properly equi pped and staffed Seagate s erv ice and repa ir facility. Troubleshooting and rep air of PCBs in the field is not recommended becaus e of the extensive diagnostic equipment required for effective servicing. There are not spare par ts available for this drive. The drive warranty is voided if the HDA is opened.

5.2.6 Service tools

No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.5. 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.

5.2.7 Hot plugging the driv e

Inserting and re moving the drive on the FC-AL will interrup t loop operation. The interruption occurs when the receiver of the next device in the loop must synchronize to a dif ferent input signal. FC e rror detection mec hanisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recov e ry is initiated based on the type of error.

The disc drive defaults to the FC-AL Monitoring state, Pass-through state, when it is powered-on by switching the power or hot plugged. The control line to an optional port bypass circuit (external to the dr ive), defaults to the Enable Bypass state. If the bypass circuit is present, the next device in the loop will continue to receive the output of the previous device to the newly inserted device. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts receiving the output from the newly inserted device and regains synchronization to the new input.

The Pass-through state is disabled while the drive performs self test of the FC interface. The control line for an external port bypass circuit remains in the Enable Bypass state while self test is running. If the bypass circuit is present, loop operation may continue. If the bypass circuit is not present, loop operation will be halted while the self test of the FC interface runs.

When the self test completes successfully, the control line to the bypass circuit is disabled and the drive enters the FC-AL Initializing state. The receiver on the next device in the loop must synchronize to output of the newly inserted drive.

If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state.

Note.

It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from the drive carrier prior to inserting it into the system.

Caution.

The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure data integrity.

16 Cheetah 18LP FC Product Manual, Rev. D

5.2.8 S.M.A.R.T.

S.M.A.R.T. is an a cronym for Self-Monitoring Analysis and Repor ting Technology. This technology is intended to recognize conditions that in dicate imminent drive failure and is designed to provide sufficient warni ng of a failure to allow you to back up the data before an actual failure occurs.

Note.

The dr ive’s firmware monitors specific attributes for degradation over time but can’t predict instantaneous drive failures.

Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the drive and the thresholds are optimized to minimize “false” and “failed” prediction s.

Controll ing S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page (1Ch). Use the DEX CPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEXCPT bit disables all S.M.A.R.T. functions. When enabled, S.M.A.R.T. collects on-line data as the drive performs normal read and wr ite operations. When the PERF bit is set, the drive is considered to be in “O n-line Mode Only” and will not perform off-line functions.

You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours.

You can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows you to control when S.M.A.R.T. interruptions occu r. Forcing S.M.A.R.T. with the RTZ command rese ts th e tim e r.

Performance impact

S.M.A.R.T. attribute data is saved to the disc so that the events that caused a predictive failure can be recreated. The drive measures and saves parameters once every two hours s ubje ct to an i dle period on the FC-AL bus. The process of measuring off-line attribute data and saving data to the disc is uninterruptable. The maximum on-line only processing delay is summarized below:

Repor ti ng c o nt rol

Reporting is controlle d by the MRIE bits in the Informational Exce ptions Control mode page (1Ch). Subject to the reporting method, the fir mware will is sue to the host an 01-5Dxx sen se code. The error code is prese rved through bus resets and power cycles.

Determining rate

S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to an unacceptable level. To deter mine rate, error events are logged and compared to the number of total operations for a given attribute. The interval defines the numb er of operations over which to measure the rate. The counter that keeps track of the current number of operations is referred to as the Interval Counter.

S.M.A.R.T. measures error rates. All errors for each monitored attribute are 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 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 the number of errors and their interval. If the number of errors exceeds the threshold before the interval expires, the error rate is considered to be unacceptable. If the number of errors does not exceed the threshold before the interval expires, the error rate is considered to be acceptable. In either case, the interval and failure counters are reset and the process starts over.

Maximum processing delay

On-line on ly d e lay DEXCPT = 0, PERF = 1

Fully-en a bl ed de l ay DEXCPT = 0, PERF = 0

S.M.A.R.T. delay times

50 milliseconds

300 milliseconds

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 17

Predictive failures

S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. 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 each time the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increments such that it reaches the predictive threshold, a predictive failure is signaled. This coun ter is referred to as the Failure History Counter. There is a separate Failure History Counter for each attribute.

5.2.9 Product warranty

Beginning on the date of shipm ent to the cus tom er and c ontinuing for a period of five years, Seagate warrants that each product (includi ng compone nts and sub assemblies) that fails to func tion properl y under norm al use due to defect in materials or workmanship or due t o nonconformance to the applicable specifications will be repaired or replaced, at Seaga te’s option and at no charge to the customer, if returned by customer at c ustomer’s expense to Seagate’s designated facility in accordance with Seag ate’s warranty procedure. Seagate will pay for transporting the repair or replacement item to the customer. For more detailed warranty information, refer to the standard terms and conditions of purchase for Seagate products on your purchase documentation.

The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472. You c an also determine rem aining warranty u sing t he Seagate web site (www.seagate.com). The drive serial number is required to determine remaining warranty information.

Shipping

When transporting or shipping a drive, use only a Seagate-approved container. Keep your original box. Seagate approved containers are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved container voids the drive warranty.

Seagate repair centers may refuse recei pt of co mpo nents improperly packaged or obviously damage d 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 informat i on

Seagate customer ser vice cent ers are the on ly facilities authorized to ser vice Seag ate drives. Seagate does not sanction any third-party repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 19

6.0 Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the drive.

6.1 AC power requirements

None.

6.2 DC power requirements

The voltage and current requirements for a single dr ive are shown below. Values indicated apply at the dr ive connector.

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

ues. Po wer supply at nominal voltage.

[2] For +12 V, a –10% tolerance is allowed during ini tial spin dle start but must return to ±5% before reaching

10,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been

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

Motor co mm a n d. [5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and

transient response. [6] Operating condition is defined as random 8 block reads at 180 I/Os per second. Current and power speci-

fied at nominal voltages. Decreasing +5 volt supply by +5% increases 5 volt current by < 1.5%. Decreas-

ing +12 volt supply by 5% increases +12 volt current by 1.4%. [7] During idle, the drive heads are relocated every 60 seconds to a random lo cation within the band from

track zero to one-fourth of maximum track.

General DC power requirement notes.

1. Minimum current loading for each supply voltage is not less than 2% of the maximum operating current

shown.

2. The +5V and +12V supplies should employ separate ground returns.

3. Where power is provided to multiple drives from a common supply, careful consideration f or i ndividual drive

power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device.

4. Parameters, other than spindle start, are measured after a 10-minute warm up.

Table 1: DC power requirements

ST318203FC ST39103FC

Notes (Amps) (Amps) (Amps) (Amps)

Voltage +5V +12V [2] +5V +12V [2] Regulation [5] ±5% ±5% [2] ±5% ±5% [2] Avg id le current DCX [1] [7] 1.03 0.58 1.03 0.39 Maximum starting current

(peak DC) DC [3] 1.12 1.5 1.2 1.4

(peak AC) AC [3] 1.3 2.5 1.3 1.7 Delayed motor start (max) DC [1] [4] 1.0 0.03 0.96 0.03 Peak operating current: Typical DCX

[1] [6] 1.1 0.9 1.11 0.71 Maximum DC [1] 1.13 0.95 1.13 0.72 Maximum (peak) DC 1.39 2.6 1.4 2.4

20 Cheetah 18LP FC Product Manual, Rev. D

5. No terminator power.

6.2.1 Conducted noise immunity

Noise is specified as a per iodic and random distri bution of frequencies covering a band from DC to 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 requ ire power sequencing. The dr ive protects aga inst inadvert ent wr iting during p ower-up and down.

6.2.3 Curre nt pro fil es

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

T0 Power is appl ied to the drive. T1 Controller self-tests are per formed. T2 Spindle begins to accelerate under current limiti ng after performin g internal diagnostics. T3 Spindle is up to speed and the Head-Arm restraint is unlocked.

Note:

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

Figure 3. Typical ST318203FC drive +12V current profile

+5V +12V (with spindle motor not running)

0 to 100 kHz 150mV 150mV 100 kHz to 10 MHz 100mV 100mV

0 2 4 6 8 10121416

0.0

0.5

1.0

1.5

2.0

Seconds

Amps

Average value of waveform

Envelope of waveform

+12 Volt Current during spindle start – Typical Amperes

T0 T1 T2 T3

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 21

Figure 4. Typical ST39103FC drive +12V current profile

0.0 2 4 6 8 10 12 14 16

0.0

0.5

1.0

1.5

2.0

Seconds

Amps

Average DC value of waveform

Peak AC envelope

+12 Volt Current during spindle start – Typical Amperes

T0 T1 T2 T3 T4

22 Cheetah 18LP FC Product Manual, Rev. D

Figure 5. Typical ST318203FC drive +5V current profile

Figure 6. Typical ST39103FC drive +5V current profile

0 4 8 121620242832

0.0

0.5

1.0

1.5

Seconds

Amps

Average value of waveform

Envelope of waveform

+5 Volt Current during spindle start – Typical Amperes

0 4 8 121620242832

0.0

0.5

1.0

1.5

Seconds

Amps

Average DC value of waveform

Envelope of waveform

+5 Volt Current during spindle start – Typical Amperes

T0 T1 T2 T3 T4 T5

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 23

6.3 Power dissipation ST318203FC

Typical power dissipation under idle conditions is 12.1 watts (41 BTUs per hour). To obtain o perating power for typical random read operations, refer to the following I/O rate curve (see Figure

7). Locate the typical I/O rate for a drive in your system on the hor izontal axis and read the correspond ing +5 volt current, +12 volt current, and total watts on the vertical axis. To ca lculate BTUs per hour, multiply watts by

3.4123.

Figure 7. DC current and power vs. input/output operations per second

ST39103FC

Typical power dissipation under idle conditions is 9.8 watts (33.5 BTUs per hour). To obtain o perating power for typical random read operations, refer to the following I/O rate curve (see Figure

8). Locate the typical I/O rate for a drive in your system on the hor izontal axis and read the correspond ing +5 volt current, +12 volt current, and total watts on the vertical axis. To ca lculate BTUs per hour, multiply watts by

3.4123.

Figure 8. DC current and power vs. input/output operations per second

0.4 0 50 100

I/Os per Second

Amperes

150 200

0.6

0.8

1.0

1.2

Watts

1.4

1.8

1.6

5V A 12V A Watts

0.400

0.200 0 50 100

I/Os per Second

Amperes

150 250

0.600

0.800

1.000

1.200

Watts

1.400

1.600

200

5V A 12V A Watts

24 Cheetah 18LP FC Product Manual, Rev. D

6.4 Environmental limit s

Temperature and hum idity values experienced by the drive must be such that condensa tion does not occur on any drive part. Altitude and atmospheric pressure specifica tions 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

With cooling designed to maintain the case temperatures of Table 2, the drive meets all specifications over a 41°F to 122°F (5 °C to 50°C) drive ambient temperature range with a maximum temp erature gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the temperatures at the locations specified in Ta ble 2 are not exceeded. Air flow may be needed to achieve these temperature values (see Section 8.4 and 8.4.1). Operation at case temperatures above these values may adversely affect the drives ability to meet specifications.

The MTBF specification for the drive is based on operating in an environment that ensures that the case temperatures specified in Table 2 are not exceeded. Occasional excursions to drive amb ient temperatures of 122°F (50°C) or 41°F (5°C) may occur without impact to specified MTBF. Air flow may be needed to achieve these temperatures (see Section 8.4.1). Co ntinual or sustained operation at case temperatures above these values may degrade MTBF.

To confir m that the required cooling for the elec tronics and HDA is provided, place the drive in its fina l mechanical configuration, perform random write/read operations. After the temperature s stabilize, measure the case temperature of the components listed in Table 2 (see note [2]).

The maximum allowable HDA case temperature is 60°C. 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.

Table 2: PCBA and HDA temperatures

Notes.

[1] Section 8.3.1 de scribes the air-flow patterns used whe n generating the 1 million hours MTBF guide-

lines in column 2. Air flow was opposite that shown in Section 8.4. Local air velocity was 1.68 m/sec (330 lfpm). Inlet air temperature to the dr ive was 77°F (25°C), plus 9°F (5°C) temperature rise in the

test enclosure (86°F/30°C ambient local to the drive). [2] Measure HDA temp at point labeled “HDA” on Figure 9. [3] PCB mounted integrated circuit case.

Items in Figure 9

Maximum allo w able case temperature (

operating

Maximum allo w able case [3] temperatures (°C) to meet MTBF spec.

HDA [2] 60 45 1 (Processor) 63 43 2 (A/D Demod) 81 61 3 (FC Interface) 91 71 4 (Motor Driver) 66 46

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 25

b. Non-operating

–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.

Figure 9. Locations of PCBA components listed in Table 2

6.4.2 Relative humidity

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

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

b. Non-operating

5% to 95% non-condensing relative humidity.

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)

HDA Temp.

Check Point

.5"

26 Cheetah 18LP FC Product Manual, Rev. D

6.4.4 Shock and vibration

Shock and vibration limits specified in this document are me as ured di rectly on the drive chassis. If the dri ve is installed in an enclosure to which the stated shock and/or vibration criteria is ap plied, resonances may occur internally 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 10, and in accorda nce with t he restr ict ions of S ecti on 8.5. Orientation 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, shall operate error free while subjected to intermittent shock not exceeding 5.0 Gs 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 subject ed to intermittent shock not exceeding 10 Gs 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 shall apply to all conditions of handling and transportation . This includes both isolated drives and integrated drives.

The drive subjected to nonrepetitive shock not exceeding 75 Gs at a maximum duration of 11 msec (half sinewave) shall not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

The ST318203FC drive subjected to nonrepetitive shock not exceeding 200 Gs (230Gs for the ST39103FC) at a maximum duration of 2 msec (half sinewave) does not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

The drive subjected to nonrepet itve shock not exceeding 100 Gs at a maximum duration of 0. 5 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 palletized) general freight will be packaged to withstand 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).

Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or le ss by Seagate for general freight shipment shall withstand a drop test from 48 in ches (1,070 mm ) against a concrete floor or equivalent.

Pac kage size Pack aged/product weight Drop hei ght

<600 cu in (<9,800 cu cm) Any 60 in (1524 mm) 600-1800 cu in (9,800-19,700 cu cm) 0-20 lb (0 to 9.1 kg) 48 in (1219 mm) >1800 cu in (>19,700 cu cm) 0-20 lb (0 to 9.1 kg) 42 in (1067 mm) >600 cu in (>9,800 cu cm) 20-40 lb (9.1 to 18.1 kg) 36 in (914 mm)

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 27

Figure 10. Recommended mounting

Y X

6.4.4.2 Vibration

a. Operating - nor mal

The drive as installed for normal operation, shall comply with the complete specified performance whil e subjected to continuous vibration not exceeding

5-400 Hz @ 0.5 G

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

b. Operating - abnor m al

Equipment as install ed for normal operation shall not incur physical damage while subjected to periodic vibration not exceeding:

15 minutes of duration at major resonant frequency 5-400 Hz @ 0.75 G (X, Y, or Z axis)

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 reco very routines are available.

c. Non-operating

The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both isolated drives and integrated drives.

The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding

5-22 Hz @ 0.040 inches (1.02 mm) displacement 22-400 Hz @ 2.00 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 mode shall be 4.3 bels typical when measured to ISO 7779 specification. There will not be any discr ete tones more than 10 dB ab ove the masking noise on typical drives when mea-

sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the mas king noise on any drive.

6.4.7 Electromagnetic susceptibility

See Section 2.1.1.1.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 29

6.5 Mechanical specifications

The following nominal dimensions are exclusive of the de co rative front pa nel acc essory. However, dimensions of the front panel are shown in figure below. Refer to Figure 11 for detailed mounting configuration dimensions. See Section 8.5, “Drive mounting.”

Figure 11. Mounting configuration dimensions

Height: 1.000 in 25.4 mm Width: 4.000 in 101.6 mm Depth: 5.75 in 146.05 mm Weight: 1.3 pounds (ST318203F C) 0.589 k ilograms

1.2 pounds (ST39103FC) 0.544 k ilograms

[1]

-Z-T//

-Z-

[1]

-X-

-Z-

-Z- -X-N

Mounting holes are 6-32 UNC 2B, three on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of

0.12 in. (3.05 mm).

Notes:

[1]

Inches

A B C D E F G H J K L M P R S T U

26.10

147.00

101.60

92.25

3.18

44.45

41.28

28.50

101.60

6.35

41.60

4.60

41.28

41.10

7.00

0.38

1.028

5.787

4.000

3.750

0.125

1.750

1.625

1.122

4.000

0.250

1.638

0.181

1.625

1.618

0.276 .015 .015

max max

± .010 ± .010 ± .010 ± .010 ± .020 ± .020 ± .010 ± .010 ± .010 ± .020 ± .020 ± .003 ± .040

max max

± .25 ± .25 ± .25 ± .25 ± .50 ± .50 ± .25 ± .25 ± .25 ± .50 ± .50 ± .08 ± 1.02

max max

Dimension Table

Millimeters

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 31

7.0 Defect and error management

The drive, as delivered, complies with this prod uc t manual . The read error rates and specified s torage ca pacities are not dependent upon use of defect management routines by the host (initiator).

Defect and error management in the S CSI protocol involves the drive internal defect/error management and FC-AL system error considerations (errors in communications between the initiator and the drive). Tools for use in designing a defect/error management plan are briefly outlined in this section. References to other sections are provided when necessary .

7.1 Drive internal defects/errors

During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their locations recorded on t he drive primar y defects list (referred to as the “P’ list and also as the ETF defect list). At factory format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the locat ion 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.

Details of the SCSI comma nds suppor ted by the drive are d escribed i n the Fibre Chann el Interface Manual. Also, more information on the drive Error Recovery philosophy is presented in the Fibre Channel Interface Manual.

7.2 Drive error recovery procedures

When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover the data. The error recovery procedures used depend on the options previously set in the Error Recovery Parameters mode page. Error recovery and defect management may involve using several SCSI comma nds described i n the Fibre Channel I nterface Manual. The drive implements selectable error recovery time limits required in video applications.

The error recovery scheme supported by the drive provides a wa y t o control the total error recovery time for the entire command in addition to contr olling the recovery level for a single LBA. The t ot al am ount of time spent in error recovery for a command can be limited using the Recovery Time Limit bytes in the Error Recovery mode page. The total amount of time spent in e rror recovery for a single LBA can be limited using the Read Retr y Count or Write Retry Count bytes in the Error Recovery mode page.

The drive firmware error recovery algorithms consist s of 12 levels for read recoveries and five levels for write. Each level may consist of multiple steps, where a step is defined as a recovery function involving a single reread or re-write attempt. The m ax imum level used by the drive in LBA recovery is det ermined by the read and write retry counts.

Table 3 equates the read and write retry 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. Reallocations are performed when the ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the recovery time limit for the command has not yet been met. Tim e needed to perform reallocation is not counted against the recovery time limit.

32 Cheetah 18LP FC Product Manual, Rev. D

When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive does not report any unrecovered errors.

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

ered error rate. For example, suppose the read/write recovery page ha s the RC bit = 0, the read retry count set to 4, and the recovery time limit set to 450. A 4-block read command can take up to 149.3 msec recovery time for each bl oc k and a maximum of 450 msec recovery for all four blocks. If either of these limits is reached and a block has not yet been recovered, the command will end with Check Condition status and an unrecoverable read error will be reported.

7.3 FC-AL system errors

Information on the repor ting of operational errors or faults across the interface is given in the Fibre Channel Interface Manual. The FCP Response retur ns informa tion to the host about nume rous kinds of errors or faults.

The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive. Status returned by the drive to the initiator is described in the Fibre Channel Interface Manual. Status reporting

plays a rol e i n systems error management and its use in that respect is described in sections where the various commands are discussed.

Table 3: Read and write retry count maximum recovery times

Read retry count

Maximum recovery time per LBA (cumulative, msec)

Write retry count

Maximum recovery time per LBA (cumulative, msec)

0 65.7 0 35.8 1 77.6 1 53.7 2 89.6 2 59.7 3 113.4 3 77.6 4 149.3 4 185.1 5 197.0 5 (default) 226.9 6 244.8 7 334.3 8 394.0 9 441.8 10 549.2 11 2,009.2 12 (default) 4,283.8

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 33

8.0 Installation

Cheetah 18LP FC disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FCSCA)

—

no cables are required. See Section 9.5 for additional information about this connector. Use the FC-AL interface to select drive ID and all option configurations for devices on the loop. If multiple devices are on the same FC-AL and physical addresses are used, set the device selection IDs (SEL

IDs) on the backpanel so that no two devices have the same selection ID. This is called the hard assigned arbitrated loop physical address (AL_PA). There are 125 AL_PAs available (see Table 23). If you set the AL_PA on the backpanel to any value other than 0, the device plugged into the backpanel’s SCA connector inher its this AL_PA. In t he event you don’t successfully assign un ique ha rd addres ses (and therefore have duplicate selection IDs assigned to two or more devices), the FC-AL generates a message indicating this condition. If you set the AL_PA on the backpanel to a value of 0, the system issues a unique soft-assigned physical address automatically.

Loop initialization is the process used to verify or obtain an addres s. The loop initialization process is performed when power is applied to the drive, when a device is added or removed from the Fibre Channel loop, or when a device times out attempting to win arbitration.

• Set all option selections in the connector prior to applying power to the drive. If you change options after

applying power to the drive, recycle the drive power to activate the new settings.

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

512-byte logical blocks. You need to reformat the drive only if you want to select a different logical block size.

8.1 Drive ID/option selection

All drive options are made through the interface connector (J1). Table provides the pin descr iption s for the 40pin Fibre Channel single connector (J1).

8.2 LED connections

A connector, J6, is provided on the printed circuit board assembly (PCBA) to provide port bypass, drive active, and drive fault LED connections (see Figure 13). S ee Sections 9. 5.7, 9.5.8, and 9.5.9 for descriptions of LE D functions.

Figure 12. Physical interface

34 Cheetah 18LP FC Product Manual, Rev. D

[1] The drive has a 2.2K ohm resi stor in s eri es with t his LE D dr iver. Tie the minus side of an

external high-efficiency LED (i.e., 2ma) to this pin. Connect the plus side of the LED to +5V.

[2] An external current-limiting resistor is required when connecting an LED to this pin. The

minus side of the resistor/LED combination is connected to this pin. Connect the plus side to +5V.

[3] Jumper storage location (across pins 2 and 4).

Figure 13. LED indicator connector

8.2.1 J6 connector requirements

Recommended mating connector part number: Berg receptacle, 6-position, Berg part number 690-006.

8.3 Drive orientation

The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.

8.4 Cooling

Cabinet cooling must be designed by the customer so that the amb ient tem perature immediately s urrounding the drive will not exceed temperature conditions specified in Section 6.4 .1, "Tem perature." Specific consideration should be given to make sure adequate air circulation is present around the printed circuit board (PCB) to meet the requirements of Section 6.4.1, "Tem perature."

Drive Front

Port A Bypass LED [1]

Pin 1

Reserved

Port B Bypass LED [1] Fault LED [1] Reserved Active LED [2] Reserved +5V Active LED [1] Ground [3]

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 35

8.4.1 Air flow

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confir m that adequate heat removal is provided using the temperature measurement guidelines descr ibed in Section 6.4.1.

Forced air flow may be required to keep temperatures at or below the specified case temperatures of T ab le 2, in which case the drive should be ori ented, 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.

If forced air is determined to b e neces sary, possible air-flow patterns are shown in Figure 14. T he a ir-flow patterns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guidelines of Section 6.4.1 are met.

Figure 14. Air flow

8.5 Drive mounting

Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not physically distort the dr ive by attempting to mount it on a stiff, non-flat surface.

The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable mounting surface stiffness:

where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distor tion (units in inches or milli meters). The out-of- plane distor tion (X) is deter mined by defining a plane with three of the four mounting points fixed and evaluating the out-of-plane deflection of the fourth mou nting point when a known force (F) is applied to the fourth point.

Note.

Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Tech-

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

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

Above unit

Under unit

Above unit

Under unit

K x X = F < 15lb = 67N

36 Cheetah 18LP FC Product Manual, Rev. D

nology that the drive can meet t he shock and vibration specifications given herein while mounted in such an adapter frame. Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that i t can meet t he shoc k and v ibration specifications listed i n t his manual.

8.6 Grounding

Signal ground (PCBA) and HDA ground are connected together in th e drive and cannot be separated by the user. The equipment in which the drive is mounted is connected directly to th e HDA and PCBA with no el ectr ically isolating shock mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user must provide a nonconduc tive (electrically isolating) meth od of mounting the drive in the host equipment.

Increased radiated emissions may result if you do not provide the maximum s urface area ground connection between syste m gr o und and drive ground. This is the system designer’s and integrator’s responsibility.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 37

9.0 Interface requirements

This section partially describes the interface requirements as implement ed on Cheetah 18 LP FC drives. Additional information is provided in the Fibre Channel Interface Manual (part number 77767496).

9.1 FC-AL features

This section lists the Fibre Channel-specific features supported by Cheetah 18LP FC drives.

9.1.1 Fibre Channel link service frames

Table 4 lists the link services supported by Cheetah 18LP FC drives.

9.1.2 Fibre Channel task management functions

Table 5 lists the Fibre C hannel SC SI F ibre Chan nel Pr otoc ol (FC SC SI FC P) task m anagem ent f unc tions s upported.

9.1.3 Fibre Channel task management response s

Table 6 lists the FC SCSI FCP response codes return ed for task management functions supported.

Table 4: Link services supported

T ype of frame Link service

Basic link service frames Abort Sequence (ABTS) Basic link service reply frames Basic_Accept (BA_ACC)

Basic_Reject (BA_RJT)

Extended link service frames N_Port Login (PLOGI)

Fabric Logi n (FLOGI) Logout (LOGO) Process Login (PRLI) Process Logout (PRLO) Read Link Status (RLS) Fabric Address Notification (F AN) Port Di scovery (PDISC) Address Discovery (ADISC) Third-party Process Logout (TRPLO )

Extended link service reply fr am es Accept (ACC)

Link Service Reject (LS_RJT)

Fibre Channel Services Register FC-4 Types (RFT_ID)

Table 5: Fibre Channel SCSI FCP task management functions

T ask name Supported

Terminate task No Clear ACA Yes Target reset Yes Clear task set Yes Abort task set Yes

Table 6: FC SCSI FCP response codes

Function name Response code

Function complet e 00 Function not supported 04 Function reject 05

38 Cheetah 18LP FC Product Manual, Rev. D

9.1.4 Fibre Chan nel po rt lo g in

Table 7 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.

Table 7: N_Port login ( PLOGI) payload

Bytes

0-15 03 00 00 00 09 09 BB BB CF XX FS FS XX XX XX XX Common 16-31 XX XX XX XX PN PN PN PN PN PN PN PN NN NN NN NN 32-35 NN NN NN NN 36-47 XX XX XX XX XX XX XX XX XX XX XX XX Class 1 48-51 XX XX XX XX 52-63 XX XX XX XX XX XX XX XX XX XX XX XX Class 2 64-67 XX XX XX XX 68-79 SO SO IC IC XX XX FS FS XX CS XX XX Class 3 80-83 OS OS XX XX 84-95 XX XX XX XX XX XX XX XX XX XX XX XX Reser ved 96-99 XX XX XX XX 100-111 XX XX XX XX XX XX XX XX XX XX XX XX Vendor 112-115 XX XX XX XX Version

X Indic ates a four-bit (hex) field is not check ed. x Indicate s a single bit is not checked. BB BB-Credit. This field is not checked. The FC -AL drive uses BB-Credit of zero (0). CF Common feat ures. Th is binary field selects the common features requested by the init iator lo gin.

MSB Continuously increasing offset Must = 1

Random relati ve offse t Not checked. Port Logi n Acc e pt will return a 0—not supported. Valid version level x N_Port/F_Port Must = 0, N _Port Alternate credit model Must = 1 Other bits reserved xxx XX

FS Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS < 2,112 and a

mult iple of four bytes. For m ultiple frame sequences, all frames but the last fr ame of the sequence must be this size. Only the receive buffer field size in the Class 3 parameters is u sed.

PN Port name (initiator’s)—saved w ith t he log in par a mete r s . If a ch ang e of th e po rt name/ AL_PA address asso ci at ion is det ec t ed dur -

ing a Port DISCovery, and implicit logout occurs and the initiat or returns a LS_RJ T. NN Node name. The node name is not checked or saved by the drive. SO Service options Class 3 only.

MSB Class va lid Must = 1

Intermix x Stacked connecti on re q. xx Sequential delivery x Other bits reserved xxx XX

IC Initiator control

MSB XID reassign xx

Proc Assc 10 or 11 causes the login t o be reject ed. Other values are ac cepted.

Other bits XXX CS Concurrent sequences Must be a valu e greater than 0. OS Open seq uences per exchange Must be a value greate r than 0.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 39

9.1.5 Fibre Channel port login accept

Table 8 identifies the N_Port Login access payload values.

Table 8: N_Port Login Accept (ACC) payload

9.1.6 Fibre Channel Process Login

Table 9 lists the process login payload data.

Table 9: Process Login (PLRI) payload

XX Indicates fields that are not used.

9.1.7 Fibre Channel Process Login Accept

Table 10 lists Cheetah 18LP FC process login accept payload data.

Table 10: Process Login Accept (ACC) pa yload

Bytes

0-15 02 00 00 00 09 09 00 00 88 00 FS FS 00 FF 00 01 Common 16-31 00 00 01 F4 20 PP 00 20 37 UI UI UI 20 00 00 20 32-35 37 UI UI UI 36- 47 00 00 00 00 00 00 00 00 00 00 00 00 Class 1 48-51 00 00 00 00 52- 63 00 00 00 00 00 00 00 00 00 00 00 00 Class 2 64-67 00 00 00 00 68- 79 80 00 00 00 00 00 FS FS 00 FF 00 00 Clas s 3 80-83 00 01 00 00 84-95 00 00 00 00 00 00 00 00 00 00 00 00 Reserved 96-99 00 00 00 00 100-111 00 00 00 00 00 00 00 00 00 00 00 00 Vendor 112-115 00 00 00 00 Version

FS Rec eive buf fer fiel d size. Th e drive returns and uses the receive buffer size from the N_Port Login Class 3 receive

buffer.

UI Unique identifier. This 24-bit fi eld is uniquely assigned to the drive. This same UI appears in the Port Name and

Node Name fields.

PP Port identifier field.

01 P_LOGI received on Port A. 02 P_LOGI received on Port B.

Bytes

0-15 20 10 00 14 08 00 20 00 XX XX XX XX XX XX XX XX 16-19 00 00 00 22

Bytes

0-15 02 10 00 14 08 00 21 00 00 00 00 00 00 00 00 00 16-31 00 00 00 12

40 Cheetah 18LP FC Product Manual, Rev. D

9.1.8 Fibre Chan nel fa bric lo g i n

Table 11 lists the fabric login payload from the drive.

Table 11: Fabric Login (FLOGI) payload

Bytes

0-15 04 00 00 00 09 09 00 00 08 00 08 40 00 00 00 00 Common 16-31 00 00 02 F4 20 PP 00 20 37 UI UI UI 02 00 00 20 32-35 37 UI UI UI 36-47 00 00 00 00 00 00 00 00 00 00 00 00 Class 1 48-51 00 00 00 00 52-63 00 00 00 00 00 00 00 00 00 00 00 00 Class 2 64-67 00 00 00 00 68-79 80 00 00 00 00 00 08 40 00 00 00 00 Class 3 80-83 00 00 00 00 84-95 00 00 00 00 00 00 00 00 00 00 00 00 Reserved 96-99 00 00 00 00 100-111 00 00 00 00 00 00 00 00 00 00 00 00 V endor 112-115 00 00 00 00 Version

UI Unique identif ier. This 24-bit field is uniquely assigned to the drive. This same UI ap pears in t he Port Name and Node Name

fields.

PP Port id en tif ie r field.

01 FLOGI originated on Port A. 02 FLOGI originated on Port B.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 41

9.1.9 Fibre Channel fabric accept login

Table 11 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.

Table 12: Fabric Login Accept (ACC) payl oad

Bytes

0-15 02 00 00 00 09 09 BB BB CF XX FS FS R_ A_ T0 V_ Common 16-31 E_ D_ T0 V_ PN PN PN PN PN PN PN PN NN NN NN NN 32-35 NN NN NN NN 36-47 XX XX XX XX XX XX XX XX XX XX XX XX Class 1 48-51 XX XX XX XX 52-63 XX XX XX XX XX XX XX XX XX XX XX XX Class 2 64-67 XX XX XX XX 68-79 SO SO xx xx XX XX FS FS XX xx XX XX Class 3 80-83 OS OS XX XX 84-95 XX XX XX XX XX XX XX XX XX XX XX XX Reserved 96-99 XX XX XX XX 100-111 XX XX XX XX XX XX XX XX XX XX XX XX Vendor 112-115 XX XX XX XX Version

X Indicates a four-bit (hex) field is not checked. x Indicates a single bit is not c hecked. BB BB-Credit. This field is not checked. The FC- AL drive uses BB-Cr edit of zero (0). CF Common features. This binary field selects the common features requested by the fabric login.

MSB Continuously increasing offset x

Random relative offset x Valid version level x N_Port/F_Port Must = 1, F_Port Alternate credit model Must = 1 Other bits reserved xxx XX

FS Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS < 2,112 and a

mult iple of f our b y tes . T he rece ive bu ff e r fiel d si z e i n the C las s 3 pa r a meter s is u sed . The driv e use s t he low e r FS of Fabric Login Accep t or N_Port Login when sending frames to an initiator.

PN Port Name. The fabric port name is saved with the login parameters. If a change of the port name is detected during a FAN, an

implicit logout occurs and a LS_RJT is returned to the fabric. NN Node Name. The drive does not check or save the node name. SO Service Options—Class 3 only.

MSB Class valid Must = 1

Intermix x Stacked connecti on req. xx Sequential delivery Must = 1 Other bits reserved xxx XX

42 Cheetah 18LP FC Product Manual, Rev. D

9.1.10 Fibre Channel Ar b itrated Loop options

Table 13 lists the FC-AL options supported by Cheetah 18LP FC drives.

9.2 Dual port suppor t

ST318203FC drives have two independent FC-AL port s. These por ts may be connected on independent loops or on the same loop. Port A and Port B may be connected in any order or combination.

• If both ports are connected on independent loops and hard addressing is used, the drive interface address is selected through the interface connector, both ports will seek the same loop address. If no conflict, both ports will have the same loop address.

• If both ports are conne cted in the same loo p and hard addressing is used, at least one port will attempt taking a soft address to prevent an address conflict.

Note.

When a ST318203FC drive is connected in loops with previous Seagate FC drive products: Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)

Barracuda 9FC (ST19171FC) Cheetah 4LP FC (ST34501FC) Cheetah 9FC (ST19101FC)

the connection of Port A and B for these products must follow the requirements in their prod uct manuals.

Subject to buffer availability, the Cheetah 18LP FC drives support :

• Concurrent port transfers—The drive suppor ts receiving transfers on both por ts at the same time when the ports are on independent loops.

• Full duplex—The drive suppor ts sending FCP_Data, FC P_RSP, FCP_XFR_R DY and E LS transfers while receiving frames on both ports.

Table 13: FC-AL options supported

Option Supported

OPEN Half Duplex Accepted from another device. OPEN Full Duplex Sent to open another device.

Accepted from another device. Private Loop Yes Public Loop Yes Old Port State No Loop Pos ition Yes Loop Pos it ion Report Yes

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 43

9.3 SCSI commands supported

Table 14 lists the SCSI commands sup ported by Cheetah 18LP FC drives.

Table 14: Supported commands

Command code Supported [4] Command name

00h Y Test unit ready 01h Y Rezero unit 03h Y Request sense

Y Extended sense Y Field pointe r bytes

Y Actual retry count bytes 04h Y Format unit [1] 07h Y Reassign blocks 08h Y Read 0Ah Y Write 0Bh Y Seek 12h Y Inquiry

Y Vital product data page

Y Unit serial numbe r page

Y Implemented operating def. page

Y Firmware numbers page

Y Date code page

Y Jumper setti ngs page 15h Y Mode select (same pages as Mode Sense com ma nd shown below) [3] 16h Y Reserve

N 3rd party reserved

N Extent reservation 17h Y Release 18h N Copy 1Ah Y Mode sense

Y Unit attention page (00h)

Y Error recovery page (01h)

Y Disconnect/reconnect control (page 02h)

Y Format page (03h)

Y Rigid disc drive geometry page (04h)

Y Verify error recovery page (07h)

Y Caching parameters page (08h)

Y Control mode page (0Ah)

Y Power control page (1Ah)

Y Information exception s control page (1Ch) 1Bh Y Start unit/stop unit 1Ch Y Receive diagnosti c results

Y Supported diagnostics pages

Y Translate page

Y Enclosure services page 1Dh Y Send diagnostics page

44 Cheetah 18LP FC Product Manual, Rev. D

Y Supported diagnostics pages

Y Translate page 25h Y Read capacity 28h Y Read extended

Y Disable page out

Y Force unit access

N Relative address 2Ah Y Write extended

Y Disable page out

Y Force unit access

N Relative address 2Bh Y Seek extended 2Eh Y Write and verify

Y Disable page out

Y Byte chec k

N Relative address 2Fh Y Verify

Y Disable page out

Y Byte chec k

N Relative address 30h N Search data high 31h N Search data equal 32h N Search data low 33h N Set limits 34h N Prefetch 35h Y Synchronize cache 36h N Lock-unlock-cache 37h Y Read defect data 39h N Compare 3Ah N Copy and verify 3Bh Y Write buffer

Y Write combined header and data mode (0)

Y Write data mode (2)

N Download microcode mode (4)

Y Download mic rocode and save modes (5)

N Download microcode with offse ts mode (6)

Y Download microcode with offsets and save mode (7)

Y Firmware download option [2] 3Ch Y Read buffer

Y Read combined header and data mode (0)

Y Read data mode (2)

Y Read descriptor mode (3) 3Eh Y Read long 3Fh Y Write long

Table 14: Supported commands

(continued)

Command code Supported [4] Command name

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 45

[1] Cheetah 18LP FC drives can format to any multiple of four bytes per logical block in the range 512 to

4,096 bytes.

[2]

Warning.

Power loss during flash programming can result in firmware corruption. This usually makes the

drive inoperable. [3] Reference Mode Sense command 1Ah for mode pages supported. [4] Y = Yes. Command is supported.

N = No. Command is not supported.

A = Support is available on special request.

40h N Change definition 41h Y Write same

N PBdata

NLBdata 42-4Bh N Not used 4Ch Y Log Select 4Dh Y Log Sense 4E-4Fh N Not used 50h A XD write 51h A XP write 52h A XD read 53-54h N Not used 55h Y Mode Select (10) [3] 56h Y Reserved (10)

Y 3rd party reserve

N Extent reservation 57h Y Released (10) 58-59h N Not used 5Ah Y Mode Sense (10) [3] 5B-5Dh N Not used 5E A Persistent reserve in 5F A Persistent reserve out 60-7Fh N Not used 80h A XD write extended 81h A Rebuild 82h A Regenerate 83-8Fh N Not used C0-DFh N Not used EO-FFh N Not used

Table 14: Supported commands

(continued)

Command code Supported [4] Command name

46 Cheetah 18LP FC Product Manual, Rev. D

9.3.1 Inquiry data

Table 15 lists the Inquir y comm and data that t he drive should retur n to the initiator pe r the format given in the Fibre Channel Interface Manual.

Table 15:

Cheetah 18LP FC

inquiry data

* Copyright year (changes with actual year). ** 02 = SCSI-2 implemented with some SCSI-3 features (def ault).

PP 50 = Inquiry data fo r an Inq uiry command received on Port A.

70 = Inquiry data for an Inq uiry command received on Port B. R# Four ASCII digits repr esenting the last four digits of the product firmware release number. S# Eight ASCII digit s repr esenting the eight digits of the product serial n um ber. [ ] Bytes 16 through 25 reflect drive model. ST318203FC values are shown in the table above.

For ST39103FC drives, bytes 16 through 22 are: 53 54 33 39 31 30 33.

9.3.2 Mode Sense d ata

The Mode Sense com ma nd prov ides a way for the drive to report its operating parameters to the initiator. The drive maintains four sets of mode parameters:

1. Default values

Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB. These default values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An initiator can request an d receive from the drive a list of default values and use those in a Mode Sel ect command to set up new current and saved values, where the values are changeable.

2. Saved values

Saved values are stored on the drive’s media using a Mode Select comma nd. Only parameter values that are allowed to be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode Select command get their values from default values storage.

When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status.

On drives requiring unique saved values, the required unique saved values are stored into the saved values storage location on the m edia pri or to shippin g the drive. Some drives may have unique firmware with unique default values also.

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

Bytes Data (hex)

0-15 00 00 ** 32 8B 00 PP 0A 53 45 41 47 41 54 45 20 Vendor ID 16-31 [53 54 33 31 38 32 30 33 46 43] 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 00000000000000000000000000000000 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* 39* 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

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 47

3. Current values Current values are volatile values being used by the drive to control its operation. A Mode Select command

can be used to change the values identified as changeable values. Originally, current values are installed from saved or default values after a power on reset, hard reset, or Bus Device Reset message.

4. Changeable values Changeable values form a bit mask, stored in nonvolatile memory , t hat dictates which of the current values

and saved values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates the value is not change able. For example, in Table 16, refer to Mode page 81, in the row entitled “CHG.” These are hex numbers representing the changeable values for Mode pa ge

81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones, al l of these bits are changeable.

The changeable values list can only be changed by downloading new firmware into the flash E-PROM.

Note.

Because there are often several different versions of drive control firmware in the tota l population of drives in the field, the Mode Sense values given in the following tables may not exactly match those of some drives.

The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI implementation (see the Fibre Channel Interface Manual).

Definitions: DEF = Default value. Standard OEM drives are shipped configured this way. CHG = Changeable bits; indicates if default value is changeable.

48 Cheetah 18LP FC Product Manual, Rev. D

Table 16: Mode Sense data default and changeable values for ST318203FC drives

ST318203FC Bytes

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Mode Sense Header

A7 00 10 08 02 1E B3 90 00 00 02 00

<----------- -- -- ------- -- -- ------ -- --- ----------- Mo de se n s e pa ges data -- -- -------------------- -- -- ------ -- -- ---------->

DEF

81 0A C0 0B E8 00 00 00 05 00 FF FF

CHG 81 0A FF FF 00 00 00 00 FF 00 FF FF

DEF 82 0E 80 80 00 00 00 00 00 00 01 A3 00 00 00 00

CHG 82 0E FF FF 00 00 00 00 00 00 FF FF 00 00 00 00

DEF 83 16 02 A5 00 00 00 04 00 00 01 2F 02 00 00 01 00 2C 00 38 40 00 00 00

CHG

83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 00 26 2C 0C 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 20 00 00

CHG

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 87 0A 00 0B E8 00 00 00 00 00 FF FF

CHG 87 0A 0F FF 00 00 00 00 00 00 FF FF

DEF 88 12 14 00 FF FF 00 00 FF FF FF FF 80 03 00 00 00 00 00 00

CHG 88 12 B5 00 00 00 FF FF FF FF 00 00 A0 FF 00 00 00 00 00 00

DEF 8A 0A 02 00 00 00 00 00 00 00 00 00

CHG 8A 0A 03 F1 08 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 7F 01 00 00 00

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

CHG 9A 0A 00 03 00 00 00 00 00 00 00 00

DEF 9C 0A 00 00 00 00 00 00 00 00 00 01

CHG 9C 0A 8D 0F FF FF FF FF FF FF FF FF

DEF 80 02 00 00

CHG 80 02 37 40

<--- Read capacity data --->

02 1E B3 8F 00 00 02 00

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 49

Table 17: Mode Sense data default and changeable values for ST39103FC drives

ST39103FC Bytes

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Mode Sense Header

A7 00 10 08 01 0F 59 C8 00 00 02 00

<----------- -- -- ------- -- -- ------ -- --- ----------- Mo de se n s e pa ges data -- -- --- ------ -- -- ------- -- -- ------ -- -- ------- -- ->

DEF

81 0A C0 0B E8 00 00 00 05 00 FF FF

CHG 81 0A FF FF 00 00 00 00 FF 00 FF FF

DEF 82 0E 80 80 00 00 00 00 00 00 01 A3 00 00 00 00

CHG 82 0E FF FF 00 00 00 00 00 00 FF FF 00 00 00 00

DEF 83 16 0A EC 00 00 00 0D 00 00 01 30 02 00 00 01 00 2C 00 38 40 00 00 00

CHG

83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 00 26 2C 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 20 00 00

CHG

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 87 0A 00 0B E8 00 00 00 00 00 FF FF

CHG 87 0A 0F FF 00 00 00 00 00 00 FF FF

DEF 88 12 14 00 FF FF 00 00 FF FF FF FF 80 03 00 00 00 00 00 00

CHG 88 12 B5 00 00 00 FF FF FF FF 00 00 A0 FF 00 00 00 00 00 00

DEF 8A 0A 02 00 00 00 00 00 00 00 00 00

CHG 8A 0A 03 F1 08 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 7F 01 00 00 00

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

CHG 9A 0A 00 03 00 00 00 00 00 00 00 00

DEF 9C 0A 00 00 00 00 00 00 00 00 00 01

CHG 9C 0A 8D 0F FF FF FF FF FF FF FF FF

DEF 80 02 00 00

CHG 80 02 37 40

<--- Read capacity data --->

01 0F 59 C7 00 00 02 00

50 Cheetah 18LP FC Product Manual, Rev. D

9.4 Miscellaneous operating features and conditions

Table 18 lists various features and conditions. A “Y” in the suppor t column indicates the feature or condition is support ed. An “N” in the support column indicates the feature or condition is not supported.

Table 18: Miscellaneous features

Supported Feature or condition

Y FC-AL selective reset Y Automatic contingent allegiance N Asynchronous event notification N Synchronized (locked) spindle operation Y Segmented caching N Zero latency read Y Queue tagging (up to 128 queue tags supported) Y Deferred error handl ing Y Parameter rounding (controlled by Round bit in Mode Select page 0) Y Reporting actual retry count in Extended Sense bytes 15, 16, and 17 N Adaptive caching Y SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes

Table 19: Miscellaneous status

Supported Status

Y Good Y Check condition Y Condition met/good YBusy Y Intermediate/good Y Intermediate/condition met/good Y Reservation conflict Y T ask set full YACA active Y ACA active, faulted initiator

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 51

9.5 FC-AL physical interface

Figure 15 shows the location of the J1 Fibre Channel si ngle conn ec tion attachm ent (FC-S CA) a nd the J 6 connector. Figure 17 provides the dimensions of the FC-SCA. Figure 18 provides the dimensions of the J6 connector.

Details of the physical, electrical, an d logical character istics are provided within this section. The op erational aspects of Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual..

Figure 15. Physical interface

9.5.1 Physical characteristics

This section defines physical interface connector.

9.5.1.1 Physical description

FIbre Channel drives may be connected in a loop together or with other compatible FC-AL devices. A maximum of 127 devices may have addresses; however, one of the addresses is reserved for a fabric port switch device. This means 126 addresses are available for FC-AL devices . More FC-AL compatible devices may physically reside on the loop, but they will not be functional because they would not be able to obtain valid addresses.

Port bypass circuits (PBCs) allow devices to be insert ed into unpop ulated loc ations or removed from the loop with loop operation recovery after a brief interrupt ion. These PBCs are located external to th e FC-AL device. Figure 16 shows the relationship between the PBC and FC-AL device.

Figure 16. Port bypass circuit physical interconnect

Port Bypass

Circuit N–1

Select

Drive N–1

Port Bypass

Circuit N+1

Drive N+1

Drive N

SerialInSerial

Out

From Previous

Drive

Port Bypass

Circuit

To Next

Drive

MUX

52 Cheetah 18LP FC Product Manual, Rev. D

9.5.2 Connector requirements

Recommended mating SCA part number:

The FC-AL SCA device connector is illu strated in Figur e 17. The J6 connect or is illustrate d in Figure 18.

Figure 17. FC-AL SCA device connector dimensions

Figure 18. J6 connector dimensions

Part description Positions Part number Features

AMP Vertical (SCA sequence) 40 787317-1

With polarization

Berg 40 71781

With polarization

Methode 40 512-220-91-101N

With polarization

Molex 40 717431040

With polarization

1.618 ± .003 in

(41.1 ± 0.08 mm)

0.197 ± .003 in

(5.00 ± .08 mm)

2 places

1.28 in

(32.47 mm)

.64 in

(16.24 mm)

Pin 40

Pin 20

Pin 21

Pin 1

1.618 ± .003 in

(41.10 ± 0.08 mm)

1.492 ± .009 in

(37.90 ± 0.24 mm)

(6.71+0.18 mm)

(–0.25 mm)

0.264+.007 in –.010 in

typ.

.05 in

(1.27 mm)

min.

0.226 in

(6.50 mm)

min.

0.024 in

(0.60 mm)

min.

0.039 in

(0.75 mm)

2 places

0.051 ± .006 in

(1.30 ± 0.16 mm)

0.079 ± .010 in (2.00 ± .25 mm)

Mating end Housing

Contact (typ.)

.025 in (0.635 mm)

0.106 ± .010 in

(2.70 ± 0.25 mm)

0.060 ± .010 in

(1.52 ± 0.25 mm)

(initial point

of contact)

0.394 ± .004 in

(10.0 ± 0.10 mm)

.787

(19.99 mm)

.079 (2 mm)

.079

(2 mm)

.708

(17.983 mm)

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 53

9.5.3 Electrical description

Fibre Channel drives use the FC-SCA connector for:

• DC power

• FC-AL interface

• Drive select (device identification)

• Option selection

• Enclosure Services interface

This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.

9.5.4 Pin descriptions

This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.

Table 20: FC-SCA pin descriptions

*Short pins in mating backpanel connect or. [1] This pin may be connected to external logic to detect the presence of the dr ive. The drive connects this

pin to the common ground.

Pin Signal name Signal type Pin Signal name Signal type

1* -EN bypass port A TTL output 21 12 Volts charge 2* 12 Volts 22 Ground 3* 12 Volts 23 Ground 4* 12 Volts 24* +Port A_in Diff. PECL input pair 5* -Parallel ESI 25* -Port A_in 6* Ground

[1]

26 Ground 7* Active LED out Open colle ctor ou t 27* +Port B_in Diff. PECL input pair 8* Reserved 28* -Port B_in 9* Star t_1 TTL input 29 Ground 10* Start_2 TTL input 30* +Port A_out Diff PECL output pair 11* -EN bypass port B T TL outp ut 31* -Port A_out 12* SEL_6 TTL input/output 32 Ground 13* SEL_5 TTL input/output 33* +Port B_out Diff PECL output pair 14* SEL_4 TTL input 34* -Port B_out 15* SEL_3 TTL input/output 35 Ground 16* Fault LED out Open collector out 36 SEL_2 TTL input/output 17* Reserved NC 37 SEL_1 TTL input/output 18* Reserved NC 38 SEL_0 TTL input/output 19* 5 Volts 39 Reserved NC 20* 5 Volts 40 5 Volts charge

54 Cheetah 18LP FC Product Manual, Rev. D

9.5.5 FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 19. The receiver is required to provide the AC coupling to eliminate ground shift noise.

Figure 19. FC-AL transmitters and receivers

9.5.6 Power

Power is supplied through the F C-SCA with suppor t for +5 volts and +12 volts. All of the voltage pins in the drive connector are the same length.

Four 12 v olt pi ns provide +12 volt power to the drive . The current return for the +12 volt power supply is through the common ground pins. The sup ply current and return current must be distributed as evenly as possible among the pins. The maximum current typically occurs while the drive motor is starting.

Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the common ground pins. Distribute supply and return current as evenly as possible am ong the v ol tage and g round pins.

The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging” the drives. There are longer voltage contacts in the connector to enable the drive filter capacitors to charge. Current to the drive through the long charge pins is limited by the system in which the drive operates. Three of the +12 volt pins are shorter to allow capacitive pre-charging through the longer +12 volt charge pin. Two of the +5 volt pins are shorter to allow capacitive precharging through the longer +5 volt charge pin.

9.5.7 Fault LED Out

The Fault LED Out signal is driven by the drive when:

• the drive detects failure of both ports

• the drive detects an internal failure

• the drive receives the appropriate fault LED command from the host

The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply through an appropr iate current-limiting resistor. The LED and the current-limiting resistor are external to the drive.

9.5.8 Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 21.

Table 21: Active LED Out conditions

Normal command activity LED status

Spun down and no activity Slow blink (20% on and 80% off a 2 sec cycle) Spun down and activity (command executing) On Spun up and no activity On Spun up and activity (comm and executing) Off Spinning up or down Blinks steadily (50% on and 50% off) Format in progre ss, each cylinder change Toggles on/off

150

.01µf

150

Differential

Transfer Medium

.01µf

150

Transmitter

Receiver

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 55

The Active LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply through an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive.

9.5.9 Enable port bypass signals

The – Enable Bypass Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals control the port bypass circuits (PBC) located external to the disc drive. The PBC allows a loop to remain functional in the event of a drive failure or removal. When these signals are active, low, the PBC bypasses the drive on the associated por t. When an Enable Bypass s ignal is active, the corresponding Port Bypass LED signal i n connector J1 is driven low by the disc drive. A pull down resistor, 1K, located with the PBC should be used t o insure the bypass is enabled if the disc drive is not installed.

The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port Bypass primitive sequence, or on removal of the drive. In the bypass state the drive continues to receive on the inbound fibre. Enable Bypass may be deactivated by detection of a Loop Port Enable primitive sequence if the drive has completed self-test and a hardware failure is not present.

Fail ure modes detected by the disc drive that will enable bypass include:

• Transmitter/receiver wrap test failure

• Loss of receive clock

• Loss of transmission clock

• Drive interface hardware error

9.5.10 Motor start controls

The dr ive’s motor is started according to the St art_1 and Star t_2 signals d escribed in Table 22. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

9.5.11 SEL_6 through SEL_0 ID lines

The SEL_6 through SEL_0 ID line s deter mine dr ive address, and, optionally, for an Enclosure Ser vices Interface. When the Parall el ESI line is high, the enclosure backpanel must provide address information on the SEL line. Refer to table 23 for a mapping of SEL to FC-A L physical addresses (AL_PA ). You can think of t he SEL lines as the equivalent of a backpanel logic plug. The drives does not provide pull up resistors on these l ines. The backpanel is required to provide high and low inputs to the SEL_ID line s per t he spec ifications i n t able 24 on page 58.

Note.

Table 23 gives AL_PA values for each SEL value. The first entry in the t able is SEL_ID 00. The last entry is SEL_ID 7D . SEL_ID 7E is AL_PA 00 which is not valid for an NL_Port, so is not included in the table. Also, SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that physical addresses are not being assigned using the SEL lines and that a “soft” address will be determined by FC-AL loop initialization.

When the Parallel ESI line is low, the enclosure backpanel logic switches to E SI mode if supported. There are two modes of ESI, seven bits of enclosure statu s and a bidirectional mode. ESI suppo rt and the mode are determined by the drive using a di scovery process. Refer to the Fibre Channel Interface Manual for a description of ESI operation.

Table 22: Motor start control signals

Case Start_2 Start_1 Motor spin function

1 Low Low Motor spins up at DC power on. 2 High Low Motor spins up only when SCSI St art command is rece ived. 3 Low High Motor spins up after a delay of 12 seconds times the modul o 8 value of

the numeric SEL ID of the drive fro m DC power on.

4 High High The drive will not spin up.

56 Cheetah 18LP FC Product Manual, Rev. D

9.5.11.1 Parallel Enclosure Services Interface (ESI)

The parallel ESI line is an output from the drive. This line provides the enclosure wi th an indication of the present function of the SE L lines. A high level, the default state, indicates the dr ive requires address information on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a description of ESI operations.

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 57

Table 23: Arbitrated lo op physical addre ss (AL_PA) values

AL_PA (hex)

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

EF 00 00 A3 2B 43 4D 56 86 E8 01 01 9F 2C 44 4C 57 87 E4 02 02 9E 2D 45 4B 58 88 E2 03 03 9D 2E 46 4A 59 89 E1 04 04 9B 2F 47 49 5A 90 E0 05 05 98 30 48 47 5B 91 DC 06 06 97 31 49 46 5C 92 DA 07 07 90 32 50 45 5D 93 D9 08 08 8F 33 51 43 5E 94 D6 09 09 88 34 52 3c 5F 95 D5 0A 10 84 35 53 3A 60 96 D4 0B 11 82 36 54 39 61 97 D3 0C 12 81 37 55 36 62 98 D2 0D 13 80 38 56 35 63 99 D1 0E 14 7C 39 57 34 64 100 CE 0F 15 7A 3A 58 33 65 101 CD 10 16 79 3B 59 32 66 102 CC 11 17 76 3C 60 31 67 103 CB 12 18 75 3D 61 2E 68 104 CA 13 19 74 3E 62 2D 69 105 C9 14 20 73 3F 63 2C 6A 106 C7 15 21 72 40 64 2B 6B 107 C6 16 22 71 41 65 2A 6C 108 C5 17 23 6E 42 66 29 6D 109 C3 18 24 6D 43 67 27 6E 110 BC 19 25 6C 44 68 26 6F 111 BA 1A 26 6B 45 69 25 70 112 B9 1B 27 6A 46 70 23 71 113 B6 1C 28 69 47 71 1F 72 114 B5 1D 29 67 48 72 1E 73 115 B4 1E 30 66 49 73 1D 74 116 B3 1F 31 65 4A 74 1B 75 117 B2 20 32 63 4B 75 18 76 118 B1 21 33 5C 4C 76 17 77 119 AE 22 34 5A 4D 77 10 78 120 AD 23 35 59 4E 78 0F 79 121 AC 24 36 56 4F 79 08 7A 122 AB 25 37 55 50 80 04 7B 123 AA 26 38 54 51 81 02 7C 124 A9 27 39 53 52 82 01 7D 125 A7 28 40 52 53 83 A6 29 41 51 54 84 A5 2A 42 4E 55 85

58 Cheetah 18LP FC Product Manual, Rev. D

9.6 Signal characteristics

This section describ es the electr i cal signal characteristics of the drive’s input and output signals. See Table 20 on page 53 for signal type and signal name information.

9.6.1 TTL input characteristics

Table 24 provides the TTL characteristics.

9.6.2 LED driver signals

Fault and Active LED signals are located in the FC-SCA co nnector (J1) and through the indicator connector (J6). See Table 25 for the output characteristics of the LED drive signals.

9.6.3 Differential PECL output

The serial PECL output signal voltage characteristics are provided in Table 26. The outputs are not AC coupled in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC characteristics of the outputs and the receiver.

Table 24: TTL characte ristics

State Voltage Current

Input high 1.9 < V

< 5.5V IIH = ±50 0n A max.

Input low -0.5V < V

< 0.9V IOL = ±500nA max.

Output high (-EN Bypass A, B) 2.4 < V

< 5.25V IOH < -3mA

Output low (-EN Bypass A, B) V

< 0.5V IOL < 3mA

Output high (-Parallel ESI) 2.4 < V

< 0.9 V

VOH > 0.9V

IOH < -2.4mA I

< -500µA

Output low (-Parallel ESI) 0 < V

< .45V IOL < 2.4mA

Output high (all other outputs) 2.4 < V

< 0.9 V

VOH > 0.9V

IOH < -1.6mA I

< -500µA

Output low (all oth er out puts) 0 < V

< .45V IOL < 1.6mA

Table 25: LED drive signal

State Current drive a vailable Output voltage

LED off, hig h 0 < I

< 100µA

LED on, low I

< -30 mA 0 < VOL < 0.8V

Table 26: Different ial PECL output characteristics

Description Parameter Notes

Serial output vol tage swing 300 < V

out

< 650 mV Centered at 1.32V

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 59

Figure 20 provides the data output valid eye diagram relative to the bit cell time.

Figure 20. Transmit eye diagram

9.6.4 Di f fe rential PECL inp ut

The serial PECL input signal voltage characteristics are provided in Table 27.

Figure 21 provides the data valid eye diagram for typical and minimum requirements to recover data at the specified interface error rate. The inputs are AC coupled on the drive.

Figure 21. Receive eye diagram

Table 27: Different ial PECL input characteristics

Description Parameter Notes

Serial input vol tage swing 200 < V

< 1.300 mV AC coupled

941 ps

Vout (mv)

800 ps

941 ps

659 ps

Vin (mv)

Typical Minimum

376 ps

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 61

10.0 Seagate Technology support services Online Services

Internet

For online inf ormation about Seagate products, visit www .seagate.com or e-mail your disc or tape questions to:

Presales Support:

Disc: http://www.seagate.com/support/email/email_presales.shtml or DiscPresales@Seagate.com Tape: http://www.seagate.com/support/email/email_tape_presales.shtml or

Tape_Sales_Support@Seagate.com

Technical Support:

Disc: http://www.seagate.com/support/email/email_disc_support.shtml or DiscSuppor t@Seagate.com Tape: http://www.seagate.com/support/ema il/ema il_tape_suppor t.shtml or TapeSuppor t@ Se agate.com

SeaBOARD

is a computer bulletin board system that contains information about Seagate disc and tape drive products and is availabl e 24 hours daily. Set your communications software to eight data bits, no parity and one stop bit (8-N-1). This service is available worldwide.

Automated Services

SeaFONE® (1-800-SEAGATE)

is Seagate's toll-free number (1-800-73 2-4283) to access our au tomated selfhelp services. Using a touch-tone phone, you can find answers to service phone numbers, commonly asked questions, troubleshooting tips and specifications for disc drives and ta pe drives 24 hours daily. Internationa l callers can reach this service by dialing +1-405-936-1234.

SeaFAX

is Seagate's automated FAX delivery system. Using a touch-tone phone, you can obtain technical

support information by return FAX 24 hours daily. This service is available worldwide.

Presales Support

Our Presales Suppo rt staff can help you deter mine which Seagate products a re best suited for your specific application or computer system.

Seagate Express

You can purchase select tape produc ts and tape accessories through S eagate Express 24 hours daily by calling 1-800-531-0968 or by faxing your order to: +1-972-481-4812.

Technical Support

If you need help installing your drive, consult your dealer. Dealers are familiar with their unique system configurations and can help you with system conflicts and ot her technical issues. If you need a dditional hel p, you can talk to a Sea gate technical supp ort spec ialist. Before calling, n ote your system configuration and dr ive model number (ST####).

SeaTDD™(+1-405-936-1687)

is a telecommunications device for the deaf (TDD). You can send questions or comments 24 hours dai ly and exchange messages with a te chnical support spe cialist from 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 (CSO)

Warranty Repair

Seagate offers worldwide customer support for Seagate drives. Seagate direct OEM, Distribution and System Integrator customers should contact their Seagate service center representative for warranty information. Other customers should contact their place of purchase.

Au thoriz ed Se rv i ce Centers

If you live outside the US, you can contact an Authorized Service Center for service or repair.

62 Cheetah 18LP FC Product Manual, Rev. D

USA/Canada/Latin America Support Services

Presales Support

Disc: 1-877-271-3285 or +1-405-936-1210 FAX: +1-405-936-1683 Tape: 1-800-626-6637 or +1-714-641-2500 FAX: +1-714-641-2410

Technical Support (SeaFONE)

1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; Tape: +1-405-936-1683

SeaFAX

1-800-SEAGATE

SeaTDD

+1-405-936-1687

SeaBOARD

Disc: +1-405-936-1600; Tape: +1-405-936-1630

Warranty Repair

USA 1-800-468-3472 FAX: +1-405-949-6740 Mexico and Latin America +1-405 -949-7758 FAX: +1-405-949-6738

Au thoriz ed Se rv i ce Centers

Brazil

MA Inf o rmatica +55-21-516-6649 FA X: +55-21-51 6-5280

Canada

Memofix

+1-905-660-4936 FA X: +1-905-66 0-4951

Adtech* +1-905-812-8099 or 1-800-624-9857 FAX: +1-905-812-7807

European Support Services

For European customer support, dial the toll-free number for your specific country for presales support, technical support, SeaF AX and warranty repair.

If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30

A.M

. to 5:00 P.M. (European central time) Monday through Friday. The European cal l center is locat ed in Amst erdam , The Net herlands.

Call Center

Austria 0 800-20 12 90 Belgium 0 800-74 876 Denmark 80 88 12 66 France 0 800-90 90 52 Germany 0 800-182 6831 Ireland 1 800-55 21 22 Italy 1 677 90 695 Netherlands 0 800-732 4283 Norway 800-113 91 Poland 00 800-311 12 38 Spain 900-98 31 24 Sweden 0 207 90 073 Switzerland 0 800-83 84 11 Turkey 00 800-31 92 91 40 United Kingdom 0 800-783 5177

SeaBOARD

Germany +49-89-1409331

1.Authorized Service Centers

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 63

Fax Services—All European Countries

Presales/Technical Support/Warranty Repair 31-20-653-3513

Africa/Middle East Support Services

For presales, technical support, warranty repair and FAX services in Afr ica and the M iddle East, dial our European call center at +31-20-316-7222 from 8:30 a. m. to 5:00 p.m. (European central time) Monday through Friday, or send a FAX to +31-20-653-3513. The European call center is located in Amsterdam, The Netherlands.

Asia/Pac ific Supp ort Services

Technical Support

Australia +61-2-9725-3366 FAX: +61-2-9725-4052 Hong Kong +852-2368 9918 FAX: +852-2368 7173 Japan — FAX: +81-3-5462-2979 Singapore +65-488-7584 FAX: +65-488-7528 Taiwan +886-2-2514-2237 FAX: +886-2-2715-2923

SeaFAX

Australia +61-2-9756-5170

Warranty Repair

Japan +81-3-5462-2904 FAX: +81-3-5462-2979 Asia/Pacific and Australia +65-485-359 5 FAX: +65-488-7503

64 Cheetah 18LP FC Product Manual, Rev. D

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 65

Index

Numerics

12 volt

pins 54 3rd party reserve command 45 5 volt pins 54

Abort Sequence (ABTS) 37 abort task set function 37 AC coupling 54 AC power requirements 19 ACA active status 50 ACA active, faulted initiator status 50 Accept (ACC) 37 acoustics 28 active LED Out signal 54 Actual retry count bytes command 43 actuator 7

assembly design 5 adaptive caching 50 Address Discovery (ADISC) 37 addresses 51 air cleanliness 28 air flow 24, 35

illustrated 35 air inlet 35 Alternate credit model 38, 41 altitude 25 ambient 25 ambient temperature 24, 34 ANSI documents

fibre channel 4

SCSI 4 arbitrated loop physical address (AL_PA) 33 arbitration 33 asynchronous event notification 50 audible noise 3 auto write and read reallocation

programmable 6 automatic contingent allegiance 50 average idle current 19 average rotational latency 9

backpanel 53 backplane 55 basic link service frames 37 Basic_Accept (BA_ACC) 37 Basic_Reject (BA_ RJT ) 37 BB 38, 41 BB-Credit 38, 41 buffer

data 6

space 11 busy status 50 bypass circuit 15 Byte check command 44 bytes per surface 9 bytes per track 9

cache operation 11 cache segments 11 Caching parameters page (08h) command 43 caching write data 11 Canadian Department of Communications 3 capacity

formatted 7

unformatted 7, 9 case temperature 24 CF 38, 41 Change definition command 45 character sync 15 charge pins 54 check condition status 50 Class 3 parameters 38, 41 class B limit 3 Class valid 38, 41 clear AC A fun c ti on 37 clear ta sk se t fu nctio n 37 commands supported 43 Common features 38, 41 Compare command 44 Concurrent sequences 38 condensation 25 condition met/good status 50 connector

illustrated 52

requirements 52 continuous vibration 28 Continuously increasing offset 38, 41 Control mode page (0Ah) command 43 cooling 34 Copy and verify command 44 Copy command 43 CRC 15

error 13 CS 38 Current profiles 20 customer service 17

data block size

modifing the 7 data buffer to/from disc media 10 data heads

read/write 9 data rate

internal 9 data transfer rate 10

66 Cheetah 18LP FC Product Manual, Rev. D

data valid eye 59 Date code page command 43 DC power 53

requirements 19 defect and error management 31 deferred error handling 50 description 5 device selection IDs 33 devices 33 differential PECL input 59 dimensions 29 Disable page out command 44 disc rotation speed 9 Disconnect/reconnect control (page 02h) command

43 Download microcode and save modes (5) 44 Download microcode mode (4) 44 Download microcode with offsets and save mode (7)

44 Download microcode with offsets mode (6) 44 drive 28 drive active LED connection 33 drive characteristics 9 drive fault LED connection 33 drive ID 33 drive ID/option select headers 33 drive mounting 29, 35 drive orientation 34 drive select 53 driver signals 58 drivers and receivers 6 dual port support 42

electrical

description of connector 53 signal characteristics 58

specifications 19 electromagnetic compatibility 3 electromagnetic interference (EMI) 13 electromagnetic susceptibility 28 EMI 13 EMI requirements 3 enable bypass

port A 55

port B 55

signal 55

state 15 Enclosure Services interface 53 Enclosure services page command 43 environment 35 environmental

int erf erence 13

limits 24

requirements 13 environmental control 28 error

detection mechanisms, FC 15 management 31 rates 13

error correction code

96-bit Reed-Solomon 6 Error recovery page (01h) command 43 extended link service

frames 37

reply frames 37 Extended sense command 43 Extent reservation command 45

fabric 41 Fabric Address Notification (FAN) 37 Fabric Login (FLOGI) 37 FAN 41 fault LED out signal 54 FC-AL

document 4

int erf ace 33, 53

options supported 42

physical interface 51

SCA device connector, illustrated 52

selective reset 50 FCC rules and regulations 3 FCP

for SCSI, document 4

response codes 37

task management functions 37 FC-PH document 4 features 6

int erf ace 37 Fibre Channel documents 4 Fibre Channel Interface Manual 1, 4 Fibre Channel Services 37 Field pointer bytes command 43 firmware 6

corruption 45 Firmware download option command 44 Firmware numbers page command 43 flawed sector reallocation 6 FLOGI

received on Port A 40

received on Port B 40 Force unit access command 44 form fa ctor 6 format 33 Format command execution time 9 Format page (03h) command 43 Format unit command 43 front panel 29 FS 38, 39 , 41 function

complete, code 00 37

not supported, code 05 37

reject, code 04 37

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 67

Good status 50 gradient 25 ground shift noise 54 grounding 36

hard assigned arbitrated loop physical address

(AL_PA) 33

HDA 24, 35, 36

temperature 24 head and disc assembly (HDA) 5 head and disc assembly. See HDA heads

read/write data 9 heat removal 35 heat source 35 host equipment 36 hot plugging the drive 15 humidity 25 humidity limits 24

IC 38 ID and configuration options 6 Implemented operating def. page command 43 Information exceptions control page (1Ch) command

43 Initiator control 38 Inquiry command 43 inquiry data 46 installation 33

guide 4

interface 33

commands supported 43 description 51 error rate 13 errors 13 illustrated 51 physical 51 requirements 37

interleave 6

minimum 10 intermediate/condition met/good status 50 intermediate/good status 50 Intermix 38, 41 internal data rate 9 internal defects/errors 31 internal drive characteristics 9

J1 connector 33 J6 connector 33, 34 Jumper settings page command 43 jumpers 33

latency

average rotational 9, 10 LBdata 45 LED driver si gnal s 58 Link Service Reject (LS_RJT) 37 link services supported 37 Lock-unlock-cache command 44 Log select command 45 Log sense command 45 logic power 54 logical block address 11 logical block reallocation scheme 6 logical block si ze 6, 10 logical segments 11 Logout (LOGO) 37 loop 51, 55

disruption 15

initializ ati o n 33 loop position

FC-AL options 42 loop position report

FC-AL options 42 LS_RJT 38, 41 LSI circuitry 6

maintenance 13 maximum delayed motor start 19 maximum start current 19 mean time between failure (MTBF) 14 media description 6 minimum sector interleave 10 miscellaneous feature support

Adaptive caching 50

Asynchronous event notification 50

Automatic contingent allegiance 50

Deferred error handling 50

FC-AL selective reset 50

Parameter rounding 50

Queue tagging 50

Reporting actual retry count 50

Segmented caching 50

SMP = 1 in Mode Select command 50

Synchronized (locked) spindle operation 50

Zero latency read 50 miscellaneous status support

ACA active 50

ACA active, faulted initiator 50

Busy 50

Check condition 50

Condition met/good 50

Good 50

Intermediate/condition met/good 50

Intermediate/good 50

Reservation conflict 50

68 Cheetah 18LP FC Product Manual, Rev. D

Task set ful l 50 miscorrected media data 13 Mode select

(10) command 45

command 43 Mode sense

(10) command 45

command 43

data, table 46, 48, 49 monitoring state 15 motor star t

controls 55

option 10 mounting 35

holes 35

orientations 34 mounting configuration 29 mounting configuration dimensions 29 MTBF 13, 14, 24

defined 14

N_Port Login (PLOGI) 37

payload 38

payload values 39 NN 38, 41 Node Name 41 Node name 38 noise

audible 3 noise immunity 20 non-operating 25, 26, 28

temperature 25 non-operating vibration 28

office environment 28 old port state

FC-AL options 42 OPEN Full Duplex

FC-AL options 42 OPEN half duplex

FC-AL options 42 Open sequences per exchange 38 operating 25, 26, 28 option configurations 33 option selection 53 options 7, 42 orientation 26 OS 38 out-of-plane distortion 35 overhead time

for head switch 10

for one track cylinder switch 10

P_LOGI

received on Port A 39

received on Port B 39 package size 26 packaged 26 parameter rounding 50 pass-through state 15 PBC 51, 55 PBdata 45 PCB

tem peratur e 24 PCBA 36 peak bits per inch 9 peak operating current 19 peak-to-peak measurements 20 PECL input 59 performance characteristics

detailed 9

general 10 performance degradation 26 performance highlights 6 physical damage 28 physical interface 51

description 51 physical specifications 19 PI 39, 40 pin descriptions 53 PN 38, 41 port bypass circuit 15, 51, 55 port bypass LED connection 33 Port DISCovery 38 Port Discovery (PDISC) 37 port identifier field 39, 40 port login 38

accept 39 Port Name 41 Port name (initiator’s) 38 power 54

dissipation 23

requirements, AC 19

requirements, DC 19

sequencing 20 Power control page (1Ah) command 43 power distribution 3 Prefetch command 44 prefetch/multi-segmented cache control 10 preventive maintenance 13 printed circuit board (PCB)

cooling 34 private loop

FC-AL options 42 Proc Assc 38 Process Accept (ACC) 39 Process Login (PRLI) 37, 39 Process Login Accept (ACC) payload 39 process login payload data 39

Cheetah 1 8LP FC P r od uc t Manual, Rev. D 69

Process Logout (PRLO) 37 public loop

FC-AL options 42

pull down resistor 55

queue tagging 50

radio interference regulations 3 Random relative offset 38, 41 RCD bit 11 Read buffer command 44 Read capacity command 44 Read combined header and data mode (0) 44 Read command 43 Read data mode (2) 44 Read defect data command 44 Read descriptor mode (3) 44 read error rates 13 Read extended command 44 Read Link Status (RLS) 37 Read long command 44 read/write data heads 9 Reassign blocks command 43 Receive buffer field size 38, 41 receive buffer field size 39 Receive diagnostic results command 43 receive eye

diagram 59 receivers 54 recommended mounting 27 recovered media data 13 reference

documents 4 Regenerate command 45 Register FC-4 Types (RFT_ID) 37 Relative address command 44 relative h umidity 25 Release command 43 Released (10) command 45 reliability 6

and service 14

specifications 13 repair and return information 17 reporting actual retry count 50 Request sense command 43 reservation conflict status 50 Reserve command 43 Reserved (10) command 45 resonance 26 return information 17 Rezero unit command 43 Rigid disc drive geometry page

command 43 rotation speed 9 running disparity 15

safe ty 3 SCA part numbers 52 SCSI interface

commands supported 43 SCSI Interface Product Manual 3 Search data

equal command 44

high command 44

low command 44 Seek command 43 seek error

defined 13

rate 13 Seek extended command 44 seek performance characteristics 9 seek time

average typical 9

full st roke typica l 9

single track typical 9 segmented caching 50 SEL ID 33

lines 55

standard feature 6 Self-Monitoring Analysis and Reporting Technology

7, 16 Send diagnostics page command 43 Sequential delivery 38, 41 service

life 13, 15 philosophy 15

tools 15 Service Options 41 Servic e options 38 Set limits command 44 shieldin g 3 shipping 17 shipping container 25 shock 26

and vibration 26 shock mount 36 signal

characteristics 58

LED driver 58 single-unit shipping pack kit 7 SMART 7, 16 SMP = 1 in Mode Select command 50 SO 38, 41 spindle brake 6 Stacked connection req. 38, 41 standards 3 Start unit/stop unit command 43 start/stop time 10 support services 61 Supported diagnostics pages command 43, 44 surface stiffness

allowable for non-flat surface 35

70 Cheetah 18LP FC Product Manual, Rev. D

switches 33 Synchronize cache command 44 synchronized spindle

operation 50

system chassis 36

target reset function 37 task management functions 37

Abor t task s e t 37 Clear ACA 37 Clear task set 37 Target reset 37 termi n ate task 37

task management response codes 37

Function complete 00 37 Function not supported 05 37

Function reject 04 37 task set ful l st a tus 5 0 technical support services 61 temperature 24, 35

ambient 24

case 24

gradient 24

limits 24

non-operating 25

PCB and HDA 24

regulation 3

See also cooling termi n ate ta sk fun c ti on 37 terminators 33 Test unit ready command 43 Third-party Process Logout (TRPLO) 37 tracks per inch 9 tracks per surface 9 Translate page command 43, 44 transmit eye diagram 59 tran smitters 54 transporting the drive 17 TTL input characteristics 58

UI 39, 40 unique identifier 39, 40 Unit attention page (00h) command 43 Unit serial number page command 43 unrecoverable

error 13

write error, defined 13 unrecovered media data 13

Valid version level 38, 41 Verify command 44 Verify error recovery page (07h) command 43 vibration 26, 28

Vital product data page command 43

warranty 17 word sync 15 Write and verify command 44 Write buffer command 44 Write combined header and data mode (0) 44 Write command 43 Write data mode (2) 44 write errors 13 Write extended command 44 Write long command 44 Write same command 45

XD read 45 XD write 45 XD write extended command 45 XID reassign 38 XP write 45

zero latency read 50 zone bit recording (ZBR) 6

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

Publication Number: 83329420, Rev. D, Printed in USA

Seagate Cheetah 18LP ST318203FC, Cheetah 18LP ST39103FC Product Manual

Specifications and Main Features

Frequently Asked Questions

User Manual