Seagate Cheetah ST173404FC, Cheetah ST173404FCV, cheetah ST373405FC/FCV, cheetah ST336605FC/FCV Product Manual

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Cheetah 73FC Disc Drive

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ST173404FC/FCV

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Product Manual, Volume 1

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Cheetah 73FC Disc Drive

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ST173404FC/FCV

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Product Manual, Volume 1

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Publication number: 83329482, Rev. C

Seagate , Seagate Technology, and the Seagate logo are registered trademarks of Seagate T echnology, LLC. Cheetah, Sea FAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademar ks of Seagate Technology, LLC, or one of its subsidiar ies. 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, LLC.

Printed in the United States of America

Revision status summary sheet

Revision Date Writer/Engineer Sheets Affected

A 7/27/2000 L. Newman/G. Velaski 1/1, v thru viii, 1 thru 68. B (Class A Release) 8/24/2000 L. Newman/G. Velaski Page 10. C 8/29/2000 L. Newman/G. Velaski Pages 6, 9, 10, 38, 39, 40, 43, 45, 46, 49, 52,

57, and 58.

Cheetah 73FC Product Manual, Rev. C vii

Contents

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

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

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

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

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

3.0 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

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

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

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

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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 Interface errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.3 Write errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.4 Seek errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2 Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.1 Mean time between failure (MTBF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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

5.2.3 Preventive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.9 Drive Self Test (DST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2.10 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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

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

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

6.2.1 Conducted noise immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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

6.2.3 Current profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.3 Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.4 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

viii Cheetah 73FC Product Manual, Rev. C

6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

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

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

9.0 Interface requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

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

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

9.1.2 Fibre Channel task management functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.3 Fibre Channel task management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

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

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

9.1.6 Fibre Channel Process Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.1.7 Fibre Channel Process 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 conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5 FC-AL physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5.2 Connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.5.3 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.5 FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.6 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.7 Fault LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.8 Active LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.9 Enable port bypass signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.10 Motor start controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.11 SEL_6 through SEL_0 ID lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

9.5.12 Device control codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

9.6 Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.6.1 TTL input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.6.2 LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.6.3 Differential PECL output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

9.6.4 Differential PECL input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

10.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Cheetah 73FC Product Manual, Rev. C ix

List of Figures

Figure 1. Cheetah 73FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Cheetah 73FC disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Typical Cheetah 73FC drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 4. Typical Cheetah 73FC drive +5V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 5. DC current and power vs. input/output operations per second . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 6. Locations of PCBA components listed in Table 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 7. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 8. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 9. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 10. LED indicator connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 11. Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 12. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 13. Port bypass circuit physical interconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 14. FC-AL SCA device connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 15. J6 connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 16. FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 17. Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Figure 18. Receive eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Cheetah 73FC Product Manual, Rev. C 1

1.0 Scope

This manual describes Seagate® Cheetah 73FC (Fibre Channel) disc drives. Cheetah 73FC drives suppor t the Fibre Channel A rbitrated Loop and SCSI Fibre Chan nel Protocol spec ifica-

tions to the extent described in this manual. The Fibre Channel Interface Manual (par t number 77767496) describes the ge neral Fibre Chan nel Arbitrated Loop character istics of t his and othe r Seagate Fibre Channel drives.

Figure 1.

Cheetah 73FC

family disc drive

2 Cheetah 73FC Product Manual, Rev. C

Cheetah 73FC Product Manual, Rev. C 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 i ts host equip ment to provide adequ ate power and environment i n order to achieve optimum performance and compli ance with applicable industry and governm ental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In particular, the drive must be secur e ly mo unte d i n o rd er to guarantee the specified perfor ma nc e char acteristics. Mounting by bottom holes must meet the requirements of Section 8.5.

2.1 Standards

The Cheetah 73FC family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate Fibre Channel Interface Manual, part number 77767496.

The Cheetah 73FC dis c drive is a UL recognized co mponent per UL1950, CSA certif ied to CAN/CSA C22.2 No. 950-95, and VDE certified to VDE 0805 and EN60950.

2.1.1 Electromagnetic compatibility

The drive, as delivered, is designed for system integration and installation into a suitable enclosure prior to use. As such the drive is suppli ed as a subassembly and is not su bject to Subpar t 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 req uirements in their syst em. Shielded I/O cables may be required if the e nclosure does not provide ad equate sh ielding. If the I/O c ables are externa l 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 per formance requ irements. It is the responsibility of tho se integrating the dr ive within their sy stem s to perform thos e tests req uired and design their system to ensu re that equipment operating in the sam e system as the drive or external to the s ystem does not adversely affect the performance of the drive. See Section 5.1.1 and T able 1, DC power requirements.

Electromagnetic compliance Seagate uses an indep endent laborator y to confir m compliance wi th the directives/standar ds 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:

• Typical current use microprocessor

• 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 i ntegrator shall confir m EMC complianc e and provide the appropriate marking for their product.

Electromagnetic compliance for the European Union

If this model has the CE Marki ng it complies with the European Union requirem ents of the Electromagnetic Compatibility Direc tive 89/336/EEC o f 03 May 1989 as ame nded by Direct ive 92/31/EE C of 28 Ap r il 1992 an d Directive 93/68/EEC of 22 July 1993.

4 Cheetah 73FC Product Manual, Rev. C

Australian C-Tick

If this model has the C-Tick Markin g it complies with the Australia/New Zea land Standard A S/NZS3548 199 5 and meets the Electro magnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA).

2.2 Reference documents

Cheetah 73FC Installation Guide

Seagate part number: 83329483

Saftey and Regulatory Agency Specifications

Seagate part number: 75789512

Fibre Channel Interface Manual

Seagate part 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) NCITIS TR-19 Private Loop SCSI Direct Attach NCITIS 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) X3.270-199X6 (SCSI-3) Architecture Model NCITS 305-199X (SCSI-3) Enclosure Services 30553-001 Specification for Acoustic Test Requirements and Procedures

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

Cheetah 73FC Product Manual, Rev. C 5

3.0 General description

CheetahTM 73FC drives combine g iant magnetoresistive (GMR) head s, partial resp onse/maximum likelihood (PRML) read channe l ele ctronics, embed ded ser vo techno logy, and a Fibre Cha nnel int erface to provide high performance, high capa city data sto rage for a variety of systems inc luding engi neering wor kstatio ns, network servers, mainframes, and supercomp uters.

Cheetah 73FC dr ives are random access s torage devices designed to suppor t the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channe l Protocol as describe d in the ANSI specificatio ns, this document, and the Fibre Channel Interface Manual (part number 77767496) which describes the general interface characteristics of this drive. Cheetah 73FC drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.

The head and disc assembly (HDA) is environmentally sea led at the factory. Air recirculates within the HDA through a non-replaceable 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 conta ins no parts replace able by the user and openin g the HDA for any reason voids your warranty.

Figure 2. Cheetah 73FC disc drive

Cheetah 73FC drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of destroying or degradi ng data by landing in the da ta zone. The heads automat ically go to the l anding 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 handl ing. The shipping lock disengages and the head lo ad process begins when power is applied to the drive.

Cheetah 73FC 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 minimum power dissipation.

6 Cheetah 73FC Product Manual, Rev. C

3.1 Standard features

Cheetah 73FC

drives have the following standard features:

• Integrated dual port FC-AL controller

• Concurrent dual port transfers

• Support for FC arbitrated loop, private and public loop attachment

• Differential copper FC drivers and receivers

• Downloadable firmware using the FC-AL interface

• Supports SCSI enclosure services through the interface connector

• 128-deep task set (queue)

• Supports 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.

• Fibre Channel worldwide name uniquely identifies the drive and each port

• User-selectable logical block size (512 to 704 bytes per logical block)

• Selectable frame sizes from 128 to 2,112 bytes

• Industry standard 3.5-inch half-high 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 shipping 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

• 4,096 kbyte data buffer (16,384 kbytes on the FCV model). 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 dr ive has a di ameter of a pproximately 84 mm (approximate ly 3.3 inch es). The aluminum substrate is coate d with a thin film magnet ic material, overcoated wi th 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 (212 Mbytes/sec with 2 GHz link rate)

• 10,025 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

Cheetah 73FC Product Manual, Rev. C 7

3.4 Reliability

• 1,200,000 hour MTBF

• LSI circuitry

• Balanced low mass rotary voice coil actuator

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

• Dithering

3.5 Unformatted and formatted capacities

Formatted capacity de pends on the spare reall ocation sectors sche me select ed, the numbe r of dta tracks per sparing zone, and the number of alternate sectors (LB As) per sparing zone. The following table shows the standard OEM model capacity:

Formatted Unformatted

ST173404FC 087ACE4Dh (73.4) Gbytes 87.4 Gbytes

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. The ST173404FC dr ives use a zone spar ing scheme. The drive is divided into frequency zones with a variable number of spares in each zone.

Note.

For 2 gigabit operation sector sizes must be divisible by 8.

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) parame t er li s t ta ble in the Fibre Channel In ter face Manual, pa rt number 7776749 6. A value of zero in the Number of Blocks field indica tes that the dr ive will not change the ca pacity it is curren tly formatted to have. A number other than zero and less than the maximum number of LBAs in th e Number of Bl ocks field changes the total dr ive capacity to the value in th e Number of Clo cks field . A value greater than the ma ximum number of LBAs is rounded down to the maximum capacity.

3.7 Factory-installed accesso r ies

OEM standard dr ives are shipp ed with the Cheetah 7 3FC Insta llation Gui de (par t numb er 83329483) and the Safety and Regulatory Agency Spec ifi catio ns page (part number 75789512).

3.8 Factory-installed options

You may order the following items which are incorporated at the m anufacturing facility durin g 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 in bulk packaging to provide maxi mum 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 73FC Installation Guide, pa r t number 83 329483, is usu ally includ ed with each standard OE M drive shipped, but extra copies may be ordered.

• The Safety and Regulat ory Agency Specifications, pa rt number 83329483, is usua lly 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 adapte r car d (“T-card”) to allow cable conn ections for two FC ports and DC p ower. Two twin axial cables, 6 feet in length, are included for the input and output connections to the FC interface.

• Single-unit shipping pack.

8 Cheetah 73FC Product Manual, Rev. C

Cheetah 73FC Product Manual, Rev. C 9

4.0 Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah 73FC drives.

4.1 Internal drive characteristics

ST173404FC

Drive capacity 73.4 ..........................Gbytes (formatted, rounded off value)

Read/write data heads 24

Bytes per track 215-248....................KBytes (average, rounded off values)

Bytes per surface 3,035 ........................Mbytes (unformatted, rounded off value)

Tracks per surface 14,100 ......................Tracks (user accessible)

Tracks per inch 18,145 ......................TPI

Peak bits per inch 334 ...........................kBPI

Internal data rate 280-427....................Mbits/sec (variable with zone)

Disc rotation speed 10,025 ......................rpm (+

Avg rotational latency 2.99 ..........................msec

4.2 Seek performance characteristics

4.2.1 Access time

Including contr oller overhead (w ithout disconnect)

1, 2

(msec)

0.5%)

Not including controller overhead (without disconnect)

1,2

(msec)

Read Write Read Write

Average Typical Single track Typical Full stroke Typical

3,4

3,4 3,4

6.05 6.55 5.85 6.35

0.8 1.1 0.6 0.9

14.2 15.2 14.0 15.0

1. Execution time measured from receipt of the command to the FCP Response.

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

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 = controller overhead + average seek time + latency time.

4.2.2 Format command execution time for ≥ 512-byte sectors

ST173404FC

Maximum (with verify) 240 minutes Maximum (without verify) 120 minutes

10 Cheetah 73FC Product Manual, Rev. C

4.2.3 General performance characteristics

Minimum sector interleave 1 to 1

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

Minimum 26.7 MBytes/sec Average 33.0 MBytes/sec Maximum 40.2 MBytes/sec

Fibre Channel Interface maximum instantaneous transfer rate 1 GHz

106 Mbytes/se c*p er port (dual port = 212 Mbytes/sec*)

Logical block sizes

Default is 512-byte data blocks Variable 512 to 704 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 track

Flaw reallocation performance impact (for flaws reallocated at format time using the spare sectors per sparing zone reallocation scheme.)

Average rotational latency

*Assumes no errors and no reloc ated l ogica l b loc ks . Rate meas ured from the sta rt of the first logic al block transfer to or from the host.

Yes

Negligible

2.99 msec

2 GHz 212 Mbytes/sec*per

port (dual port = 424 Mbytes/sec*)

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 seconds. Stop time is less than 30 seconds (maximum) from removal of DC power.

If the Motor Star t option is enabled, the i nternal contr oller accepts th e commands list ed in the Fibre Channel Interface Manual less than 3 seconds after DC power has been applied. After the Moto r Start co mmand has been received, the drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure). The Motor Start command can also be used to command the drive 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 con trol algorithms that in many cases can enhance s ystem performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select this feature, the host sends the Mode Select command with the pro per values in the applicable bytes in page 08h. Prefetch and cache operations are indep end ent features from the sta ndp oin t that each is en abled and disabled ind ependently us ing the Mode Select comm and; 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 pa rameter values (Mode Page 08h) for standard OEM versions of this drive family are given in Table 16.

Cheetah 73FC Product Manual, Rev. C 11

4.5 Cache operation

Note.

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

Of the 4,096 kbytes physical buffer space i n the drive, 3,600 kbytes (14,399 k bytes of the 16,384 kbytes on FCV units) 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 each segment of the buffer. If the cache is enabled (see RCD bit in the Fibr e Ch ann el I nter face Manual), d ata re ques te d by the h ost with a r ea d command is retr ieved from the buffer, if possible, before any disc access is initia ted. If ca che operation is not enabled, the buffer (still segmented with the required number of segm ents) is still used, but only a s circular buffer segments during disc medium read operations (disregarding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The retrieved data merely passes thr ou gh some buffer segment on the way to the host. On a ca ch e 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 logica l block is reached that is not in any cache seg ment, the drive fetches it and any

remaining requested logical block addresses fr om the disc and pu ts them in a se gment of the ca che. The drive transfers the remaining requested log ical 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 logic al blocks from the disc and transfers them into a segment, and the n

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 cylinde r boundary to fetch data only if the Discontinuit y (DISC) bi t is set 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 circ ular 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-selectable configu rations. The drive supports operation of any inte ger number of segments fro m 1 to 16. Di vide the 3,60 0 kbytes (14 ,399 kbytes on the FCF model ) in the buffer by the number of segments to get the segment size. Default is 3 segments.

Note.

The size of each segment is not repo r ted by Mode Sense c ommand pa ge 08h, bytes 14 and 15. The value 0XFFFF is always reported regardless of the actual size of the segment. Sending a size specification using the Mode Selec t co mmand (bytes 14 a nd 15) does not set up a new seg ment s ize. 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 wr ite op eration by the dr ive that makes use of a drive buffer storage area where the data t o be written to the medium is stored whil e the drive p erforms 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. The s ame buffer space and segme ntat ion is u sed a s set up 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

12 Cheetah 73FC Product Manual, Rev. C

to be written are already sto red in the cache from a previous read or wr ite command. If there are, the respective cache segments are cleared. The new data is cached for subsequent Read commands.

If the number of write data logical blocks 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 begin nin g of the operat ion ; 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 conti guous lo gical blocks on the disc i mmedia tely b eyond that which was requested by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent Rea d comma nds tha t request th ose log ical blocks (this is tr ue even if cache operation is disabled). Though the pr efetch operation uses the buffer as a cache, finding the reques ted data in the buffer is a prefetch hit, not a cache operation hit.

To enable Prefetch, us e Mode Select page 08h, byte 12, bit 5 (Disable Read Ahea d - DRA bit). DRA bit = 0 enables prefetch.

Since data that is prefetched replaces data already in som e buffer segments, the host can limit the amoun t of prefetch data to optimize system performanc e. 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 cross es a cy linder bou nda ry to fetch more data only if Mode paramete rs page 08h, byte 2, bit 4 is set to 1 (Discontinuity--DISC bit).

When prefetch (read look-ahe ad) is enabled (enabled by DRA = 0), it operates under the control of ARLA (Adaptive Read Look-Ahead). If the host uses software interleave, ARLA enables prefetch of contiguous blocks from the disc when it sense s that a prefetch hit will l ikely 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 softwa re interleave, and if two sequential read operations are not for contiguous blocks of data , ARL A dis ables pre fetch, but as long as s equ enti al read oper ations request contiguous blocks of data, ARLA keeps prefetch enabled.

Cheetah 73FC Product Manual, Rev. C 13

5.0 Reliability specifications

The following reliability speci fications assume correc t host and drive operational in terface, including all interface timings, power supply voltages, and environmental requirements.

Seek error rate: Read Error Rates

Recovered Data Unrecovered media data: Miscorrected media data: Interface error rate:

Less than 10 errors in 10

Less than 10 errors in 10 Less than 1 sector in 10 Less than 1 sector in 10 Less than 1 error in 10

Less than 1 error in 10

See Section 9.6.4, "Differential PECL input." on page 58 MTBF: 1,200,000 hours Service life: 5 years Preventive maintenance: None required

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

5.1 Error rates

The error rates stated in this manual assume the following:

• The drive is operated in accordanc e with this manual using DC power as d efined 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.

seeks

bits transferred (OEM default settings)

bits transferred

bits transferred with minimum receive eye.

bits transferred with typical receive eye.

5.1.1 Environmental interference

When evaluating systems operation under conditio ns of electromagnetic int erference (EMI), the performance of the drive within the system is consid ered ac ceptable if t he dri ve does not gene rate an unrec overable 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 Interface errors

An interface error is defin ed as a failure of the receiver on a por t 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 indi vidual device error rates.

5.1.3 Write errors

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 beca use of a n equipm ent mal functi on in the dr ive, the error is classi fied as a failure affecting MTBF. Unrecoverable write errors are thos e that ca nnot be cor rected wi thin two attem pts at writing the record with a read verify after each attempt (excluding media defects).

14 Cheetah 73FC Product Manual, Rev. C

5.1.4 Seek errors

A seek error is defined as a failure of the drive to posit ion the he ads to the a ddressed track. If the error recovery fails, a seek positioning error (15h) is reported with a Medium (03h) or Hardware Error (04h) reported in the sense key. Thi s is an u nrecoverable seek error. Unrecoverable seek errors are classified a s failures for MTBF calculations. Refer to the Fibre Channel Interface Manual, part number 77767496, for Request Sense information.

5.2 Reliability and service

You can enhance the reliability of Cheetah 73FC disc drives by ensuring that the drive receives adequate cooling. Section 6.0 provide s recommended air- flow information, temperatur e measurements, and other 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 1,200,000 hours when operated in an environment that ensures the case temperatures spec ified in Sectio n 6.4.1 are not exceeded. Shor t-ter m excursions up to the specification limits of th e op erati ng e nvironmen t wi ll not a ffect MTBF p er formanc e. Ope rating th e drive at case temperatures above these values will 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:

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

Number of drive failures in the period

Estimated power-on operating hours means power-on hours per disc drive times the total number of disc drives in servic e. Each disc dr ive must have accumulated at least ni ne months of op eration. Data is c alculated 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

• 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. p redi ctive failure indicates th at the d r ive is deter iora ting to an imm inent failure and is consi dere d

an MTBF hit.

5.2.2 Field failure rate vs time

The expected field failure rate is listed below. Drive utilization will vary. An estimate range of utilization is:

• 720 power-on hours (POH) per month

• 250 on/off cycles per year

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

exceeded.

Month Parts per million (PPM)

1 2,500 2 1,600 3 1,200 4 1,000 5890 6840 7805

Cheetah 73FC Product Manual, Rev. C 15

Failure rate is calculated as follows:

• No system-induced failures counted

• Based on 1,200,000 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 usefu l service life of five years. Depot repair or r epl ac eme nt o f ma jor pa rts is permitted dur in g the lifetime.

5.2.5 Service philosophy

Special equipment i s requir ed to repair the dr ive HDA. To achieve the above service l ife, repairs must be performed only at a proper ly equ ipped and s taffed Seagate ser v ice and r epair facili ty. Troubleshooting and repa ir of PCBs in the field is not recommen ded becaus e of the extensive diagnostic equipm ent required for effective servicing. There are not spare parts available for this drive. The drive warranty is voided if the HDA is opened.

5.2.6 Service tools

No special tools are requi red for site instal lat ion or recomm ended 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 parts for the drive.

5.2.7 Hot plugging the drive

Inserting and removing the dr ive on the FC-AL will interrupt l oop operation. Th e interrup tion occurs wh en the receiver of the next device in the loop must synchronize to a different input signal. FC error detection mechanisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recovery is initiated based on the type of error.

The disc drive defaults to the FC-AL Moni toring s tate, Pass-through state, when it is powered-on by switching the power or hot plugged. T he control line to a n optiona l por t bypass circuit (external t o the dr ive), defaults to the Enable Bypass state. If the bypass circuit is prese nt, the next device in the loop wil l co nti nue to recei ve 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 inser ted drive.

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

Note.

It is the responsibil ity of th e system s inte grator to assu re that no tem perature, ener gy, 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.

5.2.8 S.M.A.R.T.

S.M.A.R.T. is an acro nym for Self-Monito ring A nalysis and Reporting Technology. This technol ogy is intende d to recognize conditions tha t indicate imminent d rive 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.

16 Cheetah 73FC Product Manual, Rev. C

Note.

The drive’s firmware monitors speci fic attributes for degradation over time but can’t predict instantaneous drive failures.

Each monitored att r ibute has been s elec ted to moni tor a speci fic set of failure condi tions i n the operati ng performance of the drive and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page ( 1Ch). Use th e DEXCPT 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 an d write operations. When the PE RF bit is set, the drive is conside red to be in “On-line Mode Only” and will not perform off-line functions.

You can measure o ff-line attributes and force the dr ive 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 occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.

Performance impact

S.M.A.R.T. attr ibute data is saved to the disc so th at the events that caused a predictive failure can be r ecreated. The drive measures and saves parameters onc e every two hours subj ect to an idle per iod on the F C-A L bus. The process of measur i ng off-li ne att r ibute data a nd saving data to the d isc is unin terr uptable. The m aximum on-line only processing delay is summarized below:

Maximum processing delay

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

On-line only delay DEXCPT = 0, PERF = 1

50 milliseconds

Fully-enabled delay DEXCPT = 0, PERF = 0

300 milliseconds

Reporting control

Reporti ng is controll ed by the MRIE b its in the Infor mational E xceptio ns Control mo de page (1C h). Subje ct to the repor ting me thod, th e firmware will issu e to the host an 01- 5Dxx s ense cod e. The err or code is p reserved 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 determine rate, error events are logged and compared to the number of total operations for a given attribute. The inte r val defines the numbe r of operat ions over which t o measur e 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. measur es error rates. All erro rs for each monit ored 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 e rrors an d their inte r val. If the numbe r of e rrors exceeds the threshol d before the interval expires, the error rat e is considered to be unacceptable. If the number of er rors 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.

Predictive failures

S.M.A.R.T. signal s predi ctive failures when the d rive is pe rforming unaccep tably for a period o f time. The f ir mware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is increme nted each time the er ror rate is unacceptable and dec remented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increm ents such that it reaches the pre-

Cheetah 73FC Product Manual, Rev. C 17

dictive threshold, a pre dictive failure is signaled. Th is counter is referred to as the Failure Histor y Counter. There is a separate Failure History Counter for each attribute.

5.2.9 Drive Self Test (DST)

Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST validates the functionality of the drive at a system level.

There are two test coverage options implemented in DST:

1. Extended test

2. Short text The most thorough option is the extended test that performs various tests on the drive and scans every logical

block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from service and return it to Seagate for service.

5.2.9.1 DST Failure Definition

The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a functional failure is encountered during DST. The channel and servo parameters are not modified to test the drive more stringently, and the number of retries are not reduced. All retries and recovery processes are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.

The following conditions are considered DST failure conditions:

• Seek error after retries are exhausted

• Track-follow error after retries are exhausted

• Read error after retries are exhausted

• Write error after retries are exhausted.

Recovered errors will not be reported as diagnostic failures.

5.2.9.2 Implementation

This section provides all of the information necessary to implement the DST function on this drive.

5.2.9.2.1 State of the drive prior to testing

The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a format, or another DST . It is the responsibility of the host application to determine the “not ready” cause.

While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

A Drive Not Ready condition is reported by the drive under the following conditions:

• Motor will not spin

• Motor will not lock to speed

• Servo will not lock on track

• Drive cannot read configuration tables from the disc

In these conditions, the drive responds to a Test Unit Ready command iwth an 02/04/00 or 02/04/03 code.

5.2.9.2.2 Invoking DST

To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for the extended test) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Manual, Volume 3, part number 75789509 for additional information about invoking DST.

18 Cheetah 73FC Product Manual, Rev. C

5.2.9.2.3 Short and extended tests

DST has two testing options:

1. short

2. extended These testing options are described in the following two subsections. Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan

segment.

Short test (Function Code: 001b)

The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds. The short test does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A complete read/verify scan is not performed and only factual failures will report a fault condition. This option provides a quick confidence test of the drive.

Extended test (Function Code: 010b)

The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-track operations test the positioning mechanism. The read operation tests the read head element and the media surface. The write element is tested through read/write/read operations. The integrity of the media is checked through a read/verify scan of the media. Motor functionality is tested by default as a part of these tests.

The anticipated length of the Extended test is reported through the Control Mode page.

5.2.9.2.4 Log page entries

When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a new self-test parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will be moved to make room for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are more than 20 parameter blocks, the least recent parameter block will be deleted. The new parameter block will be initialized as follows:

1. The Function Code field is set to the same value as sent in the DST command

2. The Self-Test Results Value field is set to Fh

3. The drive will store the log page to non-volatile memory After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-

Test Results Log page in non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed by the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is zero, the drive passed with no errors detected by the DST. If the field is not zero, the test failed for the reason reported in the field.

The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The Sense key, ASC, ASCQ, and FRU are used to report the failure condition.

5.2.9.2.5 Abort

There are several ways to abort a diagnostic. You can use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic.

You can abort a DST executing in background mode by using the abort code in the DST Function Code field. This will cause a 01 (self-test aborted by the application client) code to appear in the self-test results values log. All other abort mechanisms will be reported as a 02 (self-test routine was interrupted by a reset condition).

5.2.10 Product warranty

Beginning on the da te of sh ip men t to t he cus tom er an d c onti nuing for a per io d of five years, Seagate warrants that each product (includ ing componen ts and subass emblies) that fails to function pr operly unde r normal use due to defect in materials o r workmanship or due to nonc onformance to the applicable s pecifications will be serviced or replaced, at Seaga te’s option and at no charge to the customer, if returned by customer at customer’s expense to Seagate’s designated facility in accordance wi th Seagate’s warranty procedure. Seagate will pay for transportin g the service or re placemen t item to the custo mer. For more detailed warranty in forma-

Cheetah 73FC Product Manual, Rev. C 19

tion, refer to the standard terms and condit ion s of p urch as e for Seagate pr odu cts o n your pur c hase doc um entation.

The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472. You can also determine remaini ng warranty using the Sea gate web s ite ( 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 ser vice centers may refuse receipt of components improper ly packaged or obviously damaged in transit. Contact your authorized Seagate distributor to pur chase addit ional boxes. Seagate recommends shipping by an air-ride carrier experienced in handling computer equipment.

Product service and return information

Seagate customer se rvice centers are the only facilities author ized to service Seagate drives. Seagate does not sanction any third-p ar ty ser vic e facilities. Any unauthor ized repair o r tamper ing with th e factory s eal voids the warranty.

20 Cheetah 73FC Product Manual, Rev. C

Cheetah 73FC Product Manual, Rev. C 21

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 req uirements for a single dr ive are shown below. Val ues indicated app ly at the dr ive connector.

Table 1: DC power requirements

ST173404FC/FCV

Notes (Amps) (Amps)

Voltage +5V +12V [2] Regulation [5] ±5% ±5% [2] Avg idle current DCX Maximum starting current

(peak DC) DC 3σ[3] 0.98 2.63

(peak AC) AC 3σ[3] 1.21 4.72 Delayed motor start (max) DC 3σ[1] [4] 0.77 0.03 Peak operating current: Typical DCX Maximum DC 3σ[1] 0.93 1.62 Maximum (peak) DC 3

[1] [6] 0.92 1.5

[1] [7] 0.89 1.05

1.28 3.04

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

ues. Power supply at nominal voltage. N = 6, 22 Degrees C ambient.

[2] For +12 V, a –10% tolerance is a ll owed du ring initial sp in dle s tart but must return to ±5% before reaching

10,000 RPM. The ±5% must be main tained af ter th e dr ive signi fies that i ts power-up s equen ce 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 the Motor Sta rt option is enabled and the drive has not yet received a Start

Motor command. [5] See paragraph 6.2.1, "Conducted nois e im munity." Specified voltage tolerance includes ripp le, nois e, and

transient response. [6] Operating condition is defined as random 8 block reads at 190 I/Os per second. Current and power speci-

fied at nominal voltages. Decreasi ng +5 volt supply by 5% increases 5 volt curre nt by 2.9%. Decreasing

+12 volt supply by 5% increases 12 volt current by 2%. [7] During idle, the drive heads a re relocated every 60 secon ds to a random location 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 1.8% of the ma ximum operating curren t

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 for individual drive

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

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

5. No terminator power.

22 Cheetah 73FC Product Manual, Rev. C

6.2.1 Conducted noise immunity

Noise is specified as a periodi c and random distribution of frequencie s 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.

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

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

6.2.2 Power sequencing

The drive does not requir e power sequencing. T he drive protects aga inst inadver tent wr iting dur ing power-up and down.

6.2.3 Current profiles

Figure 3 identifies th e dri ve +12V curren t profile an d Figur e 4 identi fies the d rive +5V cu rrent prof ile. The current during the various times is as shown:

T0 Power is applied to the drive. T1 Controller self-tests are performed. T2 Spindle begins to accelerate under current limiting after performing internal diagnostics. T3 Spindle is up to speed and the Head-Arm restraint is unlocked. T4 The adaptive servo calibration sequence is performed.

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

Note:

+12 Volt Current during spindle start – Typical Amperes

Envelope of waveform

4.0

3.0

2.0

1.0

0.0 T0 T2 T3 T4 T5

Average value of waveform

0 4 8 121620242832

Figure 3. Typical Cheetah 73FC drive +12V current profile

Seconds

Cheetah 73FC Product Manual, Rev. C 23

+5 Volt Current during spindle start – Typical Amperes

1.5

1.0

0.5

0.0 T2

0 4 8 121620242832

Figure 4. Typical Cheetah 73FC drive +5V current profile

Average value of waveform

Envelope of waveform

T4T3 T5T0

Seconds

24 Cheetah 73FC Product Manual, Rev. C

6.3 Power dissipation

Typical power dissipation under idle conditions is 17.05 watts (58.18 BTUs per hour). To obtai n operating power for typical random read operations, refer to the following I/O rate cur ve (see Figur e

5). Locate the typical I/O rate for a dri ve in your system on the hor izontal axis and read the corresp onding + 5 volt current, +12 volt curr ent , a nd tota l watts on th e vertical axis. To calculate BTUs per hour, multiply watts by

3.4123.

1.800

1.600

1.400

1.200

1.000

Amperes

0.800

0.600

0.400 0 50 100

I/Os per Second

Figure 5. DC current and power vs. input/output operations per second

150 200

21 19

5V A 12V A Watts

Watts

6.4 Environmental limits

Temperatu re an d humidity values experienced by the d r ive must be su ch tha t c ond ens ati on doe s n ot o cc ur o n any drive part. A ltitude and atmospher ic pressure specificat ions are referenced to a standa rd 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 mainta in the ca se te mperature s of Table 2, the drive meets all speci fica tions over a 41°F to 122°F (5°C to 50°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the temperatures at the locations specif ied in Table 2 are not exceeded. Air flow may be needed to achieve these temperature values (see Section 8.4 a nd 8.4.1). Ope ration at case te mperatures ab ove these values may adversely affect the drives ability to meet specifications.

The MTBF specification for the drive is based on operating in an environment th at ensures that the case temperatures specified in Table 2 are not exceeded. O ccasiona l excursions t o drive ambi ent tempe ratures of 122°F (50°C) or 41°F (5°C) may occur with out impact to specified MTB F. Air flow may be needed to achieve these temperatures (see Section 8.4.1). Continual or sustained operation at case temperatures above these values may degrade MTBF.

To confirm that the required cooling for the electronics and HDA is provided, place the drive in its final mechanical configuration , per for m random wr i te/ re ad op erations. Aft er the tem pera tures sta bi lize, measure the case temperature of the components listed in Table 2 (see note [2]).

The maximum allowable HDA case temperature is 60°C. Operatio n of the dr ive at the ma ximum c ase t emperature is intended for shor t time periods only. Continuous operation at the elevated temperatures will reduce product reliabili ty.

Cheetah 73FC Product Manual, Rev. C 25

Table 2: PCBA and HDA temperatures

Maximum allowable case [3] temperatures (°C) to meet MTBF spec.

Items in Figure 6

Maximum allowable case temperature ( operating

HDA [2] 60 45 1 (Processor) 77 57 2 (A/D Demod) 93 73 3 (FC Interface) 100 80 4 (Voyager) 86 66

Notes.

[1] Section 8.3.1 describes the a ir-f low pat terns used when generating the 1,20 0,000 hours MTBF g ui de-

lines in column 2. Air flow was opposite that shown in Section 8.3.1. Local air velocity was 0.914 m/sec (180 lfpm). Inlet ai r 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 6. [3] PCB mounted integrated circuit case.

b. Non-operating

–40° to 158°F (–40° to 70°C) package ambient w ith 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.

Check Point

Figure 6. Locations of PCBA components listed in Table 2

HDA Temp.

1.0"

.5"

26 Cheetah 73FC Product Manual, Rev. C

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)

6.4.4 Shock and vibratio n

Shock and vibration limits spec ified in this documen t are mea sure d dire ctly on the dr i ve chassis. If the dr ive is installed in a n enclosu re to whic h the stat ed shock and/o r vibratio n criter ia is applied, resonance s 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 sho ck and vibration de fined within this document are speci fied with the drive mounted by any o f the four methods shown in Figure 7, and in ac cordance wit h the restricti ons of Sectio n 8.5. Orient ation 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 10.0 Gs at a maximum duration of 11 mse c (half sinewave). The drive, as installed for normal operation, shall operate error free while subjected to inter mittent shock not exceeding 65.0 Gs at a maximum duration of 2 msec (half sinewave). Shock may be applied in the X, Y, or Z axis.

b. Operating—abnormal

Equipment, as installed for normal operation, does not incur physical damage while subjected to inter mittent shock not exceeding 40 Gs at a maximum duration of 11 msec ( half sinewave). Shock occurring a t abnormal levels may promote degraded operational performance during 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 shal l appl y to all c onditi ons of h andlin g a nd transpo rtation. This i ncludes both isolated drives and integrated drives.

The drive subjected to nonrepeti tive shock not exceeding 75 Gs at a maximum duration of 11 msec (half sinewave) shall not exhibit device damage or performan ce degradati on. Shock may be appl ied in the X, Y, or Z axis.

The drive subjected to nonrepeti tive shock not exceeding 175 Gs at a maximum duration of 2 msec (half sinewave) does not exhibit device damage or performance degradation. Sh ock may be applied in the X , Y, or Z axis.

The drive subjected to nonrep etitve shock not exceeding 10 0 Gs at a maximum du ration of 0.5 msec (hal f sinewave) does not exhibit device damage or performance degradation. Sh ock may be applied in the X , Y, or Z axis.

Cheetah 73FC Product Manual, Rev. C 27

d. Packaged

Disc drives shipped as lo ose load ( not pall etized) general fr eight will b e packaged to withs tand drop s 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).

Package size Packaged/product weight Drop height

<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)

Drives packaged in single o r multipacks with a gr oss weight o f 20 pounds (8.95 kg) or less by Seaga te for general freight shipmen t shall withs tand a drop tes t from 48 in ches (1,070 mm) again st a concre te floor or equivalent.

Y X

Figure 7. Recomm en ded moun ting

28 Cheetah 73FC Product Manual, Rev. C

6.4.4.2 Vibration

a. Operating - normal

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. Translational random flat profile: 10 - 400 Hz 0.4 GRMS

b. Operating - abnormal

Equipment as inst alled for normal operation shall no t incur physical damage while subjected t o 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 recovery routines are available.

Translational random flat profile: 10 - 400 Hz 1.2 GRMS

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 dama ge or degraded performan ce as a resu lt of continuous vi bration not exceeding

5-22 Hz @ 0.040 inches (1.02 mm) displ ace men t

22-400 Hz @ 2.00 G Vibration may be applied in the X, Y, or Z axis. Translational random flat profile: 10 - 400 Hz 1.2 GRMS

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 discrete tone s more than 10 dB above the masking nois e on typical drives when mea-

sured according to Sea gate specifi cation 30553-00 1. There will no t be any tones more than 2 4 dB above the masking noise on any drive.

6.4.7 Electromagnetic susceptibility

See Section 2.1.1.1.

Cheetah 73FC Product Manual, Rev. C 29

6.5 Mechanical specifications

The following nominal dimensions are exclus ive of the decorati ve front panel acce ssory. However, dimensions of the front panel are shown in figu re below. Refer to Figure 8 for detailed mounting co nfigura tion di mensions. See Section 8.5, “Drive mounting.”

Height: 1.6 in 40.64 mm Width: 4.000 in 101.6 mm Depth: 5.75 in 146.05 mm Weight: 2.0 pounds 0.907 kilograms

-Z-T//

-Z- -X-N

-Z-

-X-

[1]

-Z-

Notes:

Mounting holes are 6-32 UNC 2B, three

[1]

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).

Dimension Table

Inches

1.654

5.787

4.000

3.750

0.125

1.750

1.625

1.122

4.000

0.250

1.638

0.181 .040

1.625

1.618

0.315 .015 .015

max max

± .010 ± .010 ± .010 ± .010 ± .020 ± .020 ± .010 ± .010 ± .010 ± .020

max

± .020 ± .003 ± .040

max max

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

Millimeters

42.01

147.00

101.60

92.25

3.18

44.45

41.28

28.50

101.60

6.35

41.60

4.60

1.20

41.28

41.10

7.00

0.38

max max

± .25 ± .25 ± .25 ± .25 ± .50 ± .50 ± .25 ± .25 ± .25 ± .50

max

± .50 ± .08 ± 1.02

max max

Figure 8. Mounting configuration dimensions

-X-

30 Cheetah 73FC Product Manual, Rev. C

Cheetah 73FC Product Manual, Rev. C 31

7.0 Defect and error management

The drive, as delivered, complies with this prod uct manual . The read error rates and specifi ed storage cap acities are not dependent upon use of defect management routines by the host (initiator).

Defect and error management in the SCSI protocol involves the drive internal defect/error man agement 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 b riefly ou tlined in this section. References to other sec tions are provided when necessary.

7.1 Drive internal defects/errors

During the initial d rive format operati on at the factor y, media defects are identified, tagged as being unusa ble, and their locations reco rded on the drive primary defects list (referred to as the “P’ list and also as the ETF defect list). At factory format time, these known defects are also reallocat ed, that is, reassigned to a new place on the medium and the l ocation listed in the defects reallocation table. The “P” li st is not alter ed after factory formatting. Locations of defects found and reallocated d uring error r ecovery procedures after drive shipment are listed in the “G” l ist (defects growth list). Th e “P” and “G” lists may be referenced by the initiator using the Read Defect Data command.

Details of the SCSI comman ds supported by the drive are desc ribed in the Fibre Channel Inter face Manual. Also, more information on the drive Error Recovery philosophy is present ed 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 pag e. Error rec overy and defect managem ent may involve using several SCSI commands descr ibed in the Fibre C hann el Interface Manual. The dr ive imple ments selec table error recovery time limits required in video applications.

The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addition to controlling the recovery level for a single LBA. The total amo unt of ti me s pe nt i n error recovery for a command can b e li mi ted us ing the Rec overy Ti me Lim it bytes in the Err or Recover y mode page. The total amount of time spen t in error 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 e rror rec overy algor ithms c onsists o f 12 levels for read recoveries and fi ve levels for write. Each level may consist of multiple steps, where a step i s defined as a re covery functio n involving a single reread or re-write attem pt. The ma ximum level used by the drive in LBA recovery is determined by the read and write retry counts.

Table 3 equate s the read and write retr y count with the maximum poss ible recovery time for read and write recovery of individual LB As. The time s given do not inc lud e tim e taken to perform rea lloc ati ons. Reall oca tions 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. Time needed to pe rform reallocation is not co unted against the recovery time limit.

When the RC bit is one, reallocation s 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.

32 Cheetah 73FC Product Manual, Rev. C

Table 3: Read and write retry count maximum recovery times

Maximum recovery time per

Read retry count

077.6 035.8

189.6 153.7 2 304.5 2 59.7 3 328.4 3 113.6 4 346.3 4 227.1 5 197.0 5 (default) 268.9

6459.7

7590.8

8614.7

9668.4 10 740.4 11 (default) 1,670.5

LBA (cumulative, msec)

Write retry count

Maximum recovery time per

LBA (cumulative, msec)

[1] These values are subject to change.

Setting these retr y counts to a value below the default setting could result in an increased unrecovered error rate which may exceed the value given in this produc t manual . A s etting of zero (0 ) will result in th e drive not performing error recovery.

For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retr y count set to 4, and the recovery time limit field ( Mode S ense pag e 0 1, bytes 10 an d 11) s et to F F FF h ex (maximum). A four LBA Read command is allowed to take up to 346 msec recovery time for each of the four LBAs in the command. If the re covery t ime l imit is set to 00 C8 hex (200 msec de cima l) a four LBA read comm and is allowed to take up to 200 msec for all error recovery within that c om man d. T he us e o f the Re covery Tim e Limit field allows finer granularity on control of the time spent in error recovery . The recovery time limit only starts cou nting when the drive is executing error recovery and it restar ts on each command. Therefore, each command’s total recovery time is sub ject ot he recovery tim e limit. Note: A recovery time limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01.

7.3 FC-AL system errors

Information on the rep orting of ope rational errors or faults across the int erface is given in the Fibre Channel Interface Manual. The FCP Respons e r eturns information to the host about numerous kind s of error s or faults.

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

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

Cheetah 73FC Product Manual, Rev. C 33

8.0 Installation

Cheetah 73FC disc dr ive installation is a plu g-and-play process. There ar e no jumpers, switches, or ter minators on the drive. Simply plug the dr ive into the ho st’s 40-pin Fibre Channel b ackpanel conn ector (FC- SCA) 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 tha n 0, the device plugg ed into the b ackpanel’s SCA connector inhe rits this AL_PA. In the event you don’t succes s full y as si gn u niq ue hard addresses ( an d the re fore have duplicate se le ction IDs assigned to two or more devices), the FC-A L gene rates a me ssage indicating this condit ion . If you set the AL_PA on the backpanel to a value o f 0, the system iss ues a uniqu e soft -assig ned physical addre ss au tomatically.

Loop initialization i s the process used to verif y or obtain an address. The loop initialization pro cess 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 opti on selections in the conn ector prior to applying p ower 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 neces sar y to l ow-level format this d r ive. The dr ive is shi pped from the factor y 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 ma de thr oug h th e i nte rface connector ( J1) . Table 19 on page 52 provides the pin descriptions for the 40-pin Fibre Channel single connector (J1).

8.2 LED connections

A connector, J6, is provided on the printed c ircu it bo ar d asse mbly (P CBA) to pr ovide port bypass, drive active, and drive fault LED connecti ons (see Figure 1 0). See Se ctions 9.5.7, 9.5.8 , and 9. 5.9 for descr iptions of LED functions.

Figure 9. Physical interface

34 Cheetah 73FC Product Manual, Rev. C

Drive Front

Pin 1

Reserved

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

[1] The drive has a 2.2K ohm resistor in series with this LED driver. Tie the minus side of an

external high-efficien cy LED (i.e., 2ma) to this pin. Connec t the plus side of the LED to +5V.

[2] An external current-limiting r esistor is r equired whe n 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 10. 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 o rientation. All drive perform ance 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 des igned by th e custo mer so that the ambien t temperatu re immedi ately s urroundin g the drive will not exceed temperature conditi ons specified in Secti on 6.4.1, "Temperature." 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, "Temperature."

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 s hould confir m that adequ ate heat removal is provided us ing the temperature measurement guidelines described in Section 6.4.1.

Forced air flow may be required to keep temp eratures at or below the specifi ed cas e tempe ratures of Table 2, in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is

Cheetah 73FC Product Manual, Rev. C 35

created while pr oviding air flow to the el ectronics and HDA. Also, the shor test possible path b etween the air inlet and exit should be c hosen to min imize the travel length of a ir heate d by the dr ive and oth er he at sourc es within the rack, cabinet, or drawer environment.

If forced air is determined to be necessa r y, possible air-flow patterns are shown in Figure 11. T he air-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 patter ns are acceptable a s long as the temperatu re measurement guidelines of Section 6.4.1 are met.

Above unit

Under unit

Above unit

Under unit

Figure 11. Air flow

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

or in reverse direction (front to back)

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

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 drive 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 s urface stiffness (units in lb /in or N/mm) and X is th e out-of-plane sur face distortio n (units in inches or millim eters). The ou t-of-plane distor tion (X) i s deter mined by defini ng a plane wi th three of the four mounting points fixed and evaluating the out-of-plane deflection of the four th mounting 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 Technology that the drive can meet the shock and vibration s pecifications given herein while mounted i n such an adapter frame. Adap ter frames that are available may not have a mechanical structure capable of mounting the drive so that it can meet the shock and vibration specifications listed in this manual.

K x X = F < 15lb = 67N

36 Cheetah 73FC Product Manual, Rev. C

8.6 Grounding

Signal ground (PCBA) and HDA ground are connecte d together in the drive and cannot be separate d by the user. The equipment in which the drive is moun ted i s co nnec te d dire ct ly to th e HDA and PCBA wi th n o el ectrically 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 nonconductive (electr ically isol ating) method of mou nting the drive in the host equipment.

Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground. This is the system designer’s and integrator’s responsibility.

Cheetah 73FC Product Manual, Rev. C 37

9.0 Interface requirements

This section partially d escr ibes th e inter face requirem ents as i mpleme nted on ST17 3404FC dr i ves. 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 ST173404FC drives.

9.1.1 Fibre Channel link service frames

Table 4 lists the link services supported by ST173404FC dr ives.

Table 4: Link services supported

Type of frame Link ser v ice

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 Login (FLOGI) Logout (LOGO) Process Login (PRLI) Process Logout (PRLO) Read Link Status (RLS) Fabric Address Notification (FAN) Port Discovery (PDISC) Address Discov ery (ADISC) Third-party Process Logout (TRPLO)

Extended link service reply frames Accept (ACC)

Link Service Reject (LS_RJT)

Fibre Channel Services Register FC-4 Types (RFT_ID)

9.1.2 Fibre Channel task management functions

Table 5 lists the Fibr e C hannel SCSI Fibre Channel Protocol (FC S CSI F CP) task management f uncti ons s upported.

Table 5: Fibre Channel SCSI FCP task management functions

Task name Supported

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

9.1.3 Fibre Channel task management responses

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

Table 6: FC SCSI FCP response codes

Function name Response code

Function complete 00 Function not supported 04 Function reject 05

38 Cheetah 73FC Product Manual, Rev. C

9.1.4 Fibre Channel port login

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

T a b le 7: N_Port login (PLOGI) payload

Bytes

0-15 03 00 00 00 XX XX BB BB CF XX FS FS XX XX XX XX Common 16-31 XXXXXXXXPNPNPNPNPNPNPNPNNNNNNNNN 32-35 NN NN NN NN 36-47 XXXXXXXXXXXXXXXXXXXXXXXXClass 1 48-51 XX XX XX XX 52-63 XXXXXXXXXXXXXXXXXXXXXXXXClass 2 64-67 XX XX XX XX 68-79 SOSOIC IC XXXXFSFSXXCSXXXXClass 3 80-83 OS OS XX XX 84-95 XXXXXXXXXXXXXXXXXXXXXXXXReserved 96-99 XX XX XX XX 100-111 XXXXXXXXXXXXXXXXXXXXXXXXVendor 112-115 XX XX XX XX Version

X Indicates a four-bit (hex) field is not checked. x Indicates 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 features. This binary field selects the common features requested by the initiator login.

MSB Continuously increasing offset Must = 1

Random relative offset Not checked. Port Login Accept will return a 0—not supported. Valid vers ion 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

multiple of four bytes. For multiple frame sequences, all frames but the last frame of the sequence must be this size. Only the receive buffer field size in the Class 3 parameters is used.

PN Port name (initiator’s)—saved wit h the login parameters. If a change of the port name/AL_PA address association is detected dur-

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

MSB Class valid Must = 1

Intermix x Stacked connection req. xx Sequential delivery x Other bits reserved xxx XX

IC Initiator control

MSB XID reassign xx

Proc Assc 10 or 11 causes the login to be rejected. Other values are accepted.

Other bits XXX CS Concurrent sequences Must be a value greater than 0. OS Open sequences per exchange Must be a value greater than 0.

Cheetah 73FC Product Manual, Rev. C 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

Bytes

0-15 02 00 00 00 20 20 00 00 88 00 FS FS 00 FF 00 01 Common 16-31 000001F420PP002037UIUIUI20000020 32-35 37 UI UI UI 36-47 000000000000000000000000Class 1 48-51 00 00 00 00 52-63 000000000000000000000000Class 2 64-67 00 00 00 00 68-79 800000000000FSFS00FF0000Class 3 80-83 00 01 00 00 84-95 000000000000000000000000Reserved 96-99 00 00 00 00 100-111 000000000000000000000000Vendor 112-115 00 00 00 00 Version

FS Recei ve buffer field size . The drive returns and u se s the rec eive buffer size from the N_Port Login Class 3 receive

buffer.

UI Unique identifier. This 24-bit field 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 Por t B.

9.1.6 Fibre Channel Process Login

Table 9 lists the process login payload data.

T a b le 9: Proce ss Logi n (PLRI) pa yloa d

Bytes

0-15 20 10 00 14 08 00 20 00 XX XX XX XX XX XX XX XX 16-19 00000022

XX Indicates fields that are not used.

9.1.7 Fibre Channel Process Login Accept

Table 10 lists ST173404FC process login accept payload data.

Table 10: Process Login Accept (ACC) payload

Bytes

0-15 02 10 00 14 08 00 21 00 00 00 00 00 00 00 00 00 16-31 00000012

40 Cheetah 73FC Product Manual, Rev. C

9.1.8 Fibre Channel fabric login

Table 11 lists the fabric login payload from the drive.

Table 11: Fabric Login (FLOGI) payload

Bytes

0-15 04 00 00 00 20 20 00 00 08 00 08 40 00 00 00 00 Common 16-31 000002F420PP002037UIUIUI02000020 32-35 37 UI UI UI 36-47 000000000000000000000000Class 1 48-51 00 00 00 00 52-63 000000000000000000000000Class 2 64-67 00 00 00 00 68-79 800000000000084000000000Class 3 80-83 00 00 00 00 84-95 000000000000000000000000Reserved 96-99 00 00 00 00 100-111 000000000000000000000000Vendor 112-115 00 00 00 00 Version

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

fields.

PP Port identifier field.

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

Cheetah 73FC Product Manual, Rev. C 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) payload

Bytes

0-15 02 00 00 00 XX XX BB BB CF XX FS FS R_ A_ T0 V_ Common 16-31 E_D_T0 V_PNPNPNPNPNPNPNPNNNNNNNNN 32-35 NN NN NN NN 36-47 XXXXXXXXXXXXXXXXXXXXXXXXClass 1 48-51 XX XX XX XX 52-63 XXXXXXXXXXXXXXXXXXXXXXXXClass 2 64-67 XX XX XX XX 68-79 SOSOxx xx XXXXFSFSXXxx XXXXClass 3 80-83 OS OS XX XX 84-95 XXXXXXXXXXXXXXXXXXXXXXXXReserved 96-99 XX XX XX XX 100-111 XXXXXXXXXXXXXXXXXXXXXXXXVendor 112-115 XX XX XX XX Version

MSB Continuously increasing offset x

Random relative offset x Valid versi on 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

multiple of four bytes. The receive buff er field size in the Class 3 parameters is used. The drive uses the lower FS of Fabric Login Accept 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 connection req. xx Sequential delivery Must = 1 Other bits reserved xxx XX

42 Cheetah 73FC Product Manual, Rev. C

9.1.10 Fibre Channel Arbitrated Loop options

Table 13 lists the FC-AL options supported by Cheetah 73FC drives.

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 Position Yes Loop Position Report Yes

9.2 Dual port support

ST173404FC drives have two independent FC-AL ports. These ports 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, bot h ports will have the same loop address.

• If both ports are connected in th e sa me l oop and hard addressing is us ed , at le as t one port will attempt ta king a soft address to prevent an address conflict.

Note.

When a ST173404FC drive is connected in loops with these 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 a nd B for thes e p roduc ts must follow the requirements in t heir pr odu ct manuals.

Subject to buffer availability, the Cheetah 73FC drives support:

• Concurrent po r t transfers—The drive supports rece iving tran sfers on both po r ts at the s ame time when th e ports are on independent loops.

• Full dupl ex—The drive supports s ending FCP_Data, FCP_RSP, FCP_X FR_RDY and ELS transfers while receiving frames on both ports.

Cheetah 73FC Product Manual, Rev. C 43

9.3 SCSI commands supported

Table 14 lists the SCSI commands that ST173404FC drives support.

T a b le 14: Supported command s

Command code Supported [4] Command name

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

Y Extended sense Y Field pointer 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 number page

Y Implemented operating def. page

Y Firmware numbers page

Y Date code page

Y Jumper settings page 15h Y Mode select (same pages as Mode Sense command shown below) [3] 16h Y Reserve

N 3rd party reserved

N Extent r eservation 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 recov ery page (07h)

Y Caching parameters page (08h)

Y Control mode page (0Ah)

Y Power control page (1Ah)

Y Information exceptions control page (1Ch) 1Bh Y Start unit/stop unit 1Ch Y Receive diagnostic resu lts

Y Supported diagnostics pages

Y Translate page

Y Enclosure services page 1Dh Y Send diagnostics page

44 Cheetah 73FC Product Manual, Rev. C

T a b le 14: Supported command s

(continued)

Command code Supported [4] Command name

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 check

N Relative address 2Fh Y V erify

Y Disable page out

Y Byte check

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 microcode and save modes (5)

N Download microcode with offsets 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

Cheetah 73FC Product Manual, Rev. C 45

T a b le 14: Supported command s

Command code Supported [4] Command name

40h N Change definition 41h Y Write same

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)

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

(continued)

N PBdata NLBdata

Y 3rd party reserve N Extent r eservation

[1] Cheetah 73FC drives can forma t to any multiple of four bytes per logic al block in the range 512 to 704

bytes.

Warning.

[2]

Power loss durin g flash programming can re sult i n fir m ware corr upti on. Th is usual ly makes th e

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.

46 Cheetah 73FC Product Manual, Rev. C

9.3.1 Inquiry data

Table 15 lists th e Inquir y com mand data th at the dr ive should retur n to the i nitiator per the format given in the Fibre Channel Interface Manual.

T a ble 15:

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 31 37 33 34 30 34 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 32* *Copyright 112-127 30* 30* 30* 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

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

PP 50 = Inquiry data for an Inquiry command received on Port A.

70 = Inquiry data for an Inquiry command received on Port B. R# Four ASCII digits representing the last four digits of the product firmware release number. S# Eight ASCII digits representing the eight digits of the product serial number. [ ] Bytes 16 through 25 reflect drive model.

Cheetah 73FC

inquiry data

9.3.2 Mode Sense data

The Mode Sense command provides a way for the drive to report i ts operating parameters to the ini tiator. The drive maintains four sets of mode parameters:

1. Default values

Default values are hard-coded in the drive firmware stor ed in flash E-PROM (nonvolatile memor y) 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 in itiator c an reque st and recei ve from the dri ve a list of default values and use those in a Mode Select comma nd to set up new current and saved values, where the values are changeable.

2. Saved values

Saved values are stored on the dri ve’s media using a Mode Selec t com mand. On ly pa rameter 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 requiri ng unique saved values, the require d unique saved values are stor ed into the saved values storage location on the me dia prior to ship pin g t he d rive. Some drives may have unique firmware wit h unique default values also.

On standard OEM dri ves, the saved values are taken from the default values list and stored into the saved values storage location on the media prior to shippi ng.

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 identifi ed as changeable values. Orig inally, current values are installed from saved or default values after a power on reset, hard reset, Target Reset, or LIP Reset.

Cheetah 73FC Product Manual, Rev. C 47

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

and saved values can be changed by a Mode Select command. A o ne (1) indicates the value can be changed. A zero (0) in dicates the value is not changeable. For example, in Ta ble 16, refer to Mode page 81, in the row entitled “CHG.” These are hex numbers rep resenti ng the ch angeable values for Mode page

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, an d 11 are not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binar y patter n 11111111. If there is a zer o in any bit position in the field, it means that bi t is not changea ble. Since all of the bits in byte 02 are ones, all 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 of ten several different versions of drive control firmware in the total po pulation of drives in the field, the Mode Sens e 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 Chan nel 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 73FC Product Manual, Rev. C

Table 16: Mode Sense data default and changeable values

ST173404FC 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

00 00 00 08 08 8b b9 92 00 00 02 00

Header

<------------------------------------------------ Mode sense pages data ------------------------------------------------>

DEF

81 0a c0 0b f0 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 cb 00 00 00 00

CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00

DEF 83 16 07 12 00 00 00 06 00 00 01 a8 02 00 00 01 00 5f 00 55 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 37 14 18 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 f0 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 10 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 09 b0

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 ff 00 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 10 00 00 00 00 00 00 00 00 01

CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff

DEF 80 02 00 00

CHG 80 02 b7 40

<--- Read capacity data --->

08 8b b9 91 00 00 02 00

Cheetah 73FC Product Manual, Rev. C 49

9.4 Miscellaneous operating features and conditions

Table 17 lists var ious features and con ditio ns. A “Y” in the su pport column indi cates the feature or c ondi tion is supported. An “N” in the support column indicates the feature or condition is not supported.

T a b l e 17: Miscella neo us fe atur es

Supported Feature or condition

Y FC-AL selective reset Y Automatic contingent allegiance N Asynchronous event notifi cat ion N Synchronized (locked) spindle operation Y Segmented caching N Zero latency read Y Queue tagging (up to 128 queue tags supported) Y Deferred error handling 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

T a b l e 18: 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 Task set full NACA active N ACA active, faulted initiator

50 Cheetah 73FC Product Manual, Rev. C

9.5 FC-AL physical interface

Figure 12 shows the locatio n of the J1 Fibre Channel s in gl e c onne ct ion atta ch men t (FC- S CA) a nd th e J 6 c onnector. Figure 14 provides the dimensions of the FC- SCA. Figure 15 provides the dimen sions of the J6 connector.

Details of the physical, elec trical, and logic al characterist ics are provided within this section. The ope rational aspects of Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual..

Figure 12. Physica l inter face

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 loo p together or with other compat ible FC-AL devices. A maximum of 127 devices may have addresses; however, one of the addresses is reserved for a fabric por t 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 (P BCs) allow devices to be ins er ted into unpopulat ed locat ions or removed from the loop with loop operation re covery after a bri ef interruptio n. These PBCs are located external to the FC-AL device. Figure 13 shows the relationship between the PBC and FC-AL device.

Port Bypass

Circuit

From Previous

Port Bypass

Circuit N–1

Drive

MUX

To Next

Drive

Port Bypass

Circuit N+1

Drive N–1

Figure 13. Port b ypa ss circuit physical interconnect

Select

SerialInSerial

Out

Drive N

Drive N+1

Cheetah 73FC Product Manual, Rev. C 51

9.5.2 Connector requirements

Recommended mating SCA part number:

Part description Positions Part number Features

AMP Vertical (SCA sequence) 40 787317-1 Berg 40 71781 Methode 40 512-220-91-101N Molex 40 717431040

With polarization With polarization With polarization With polarization

The FC-AL SCA device connector is illustrated in Figure 14. The J6 connector is illustrated in Figure 15.

1.618 ± .003 in

(41.1 ± 0.08 mm)

Pin 20

Pin 40

.64 in

(16.24 mm)

1.28 in

(32.47 mm)

1.618 ± .003 in

(41.10 ± 0.08 mm)

1.492 ± .009 in

(37.90 ± 0.24 mm)

Mating end Housing

.05 in

(1.27 mm)

typ.

.025 in (0.635 mm)

Contact (typ.)

Pin 1

Pin 21

0.264+.007 in

(6.71+0.18 mm)

(–0.25 mm)

Figure 14. FC-AL SCA device connector dimensions

–.010 in

0.197 ± .003 in

(5.00 ± .08 mm)

0.226 in

(6.50 mm)

0.106 ± .010 in

(2.70 ± 0.25 mm)

2 places

min.

0.394 ± .004 in

(10.0 ± 0.10 mm)

0.039 in

(0.75 mm)

0.051 ± .006 in

(1.30 ± 0.16 mm)

min.

0.024 in

(0.60 mm)

0.079 ± .010 in (2.00 ± .25 mm)

0.060 ± .010 in

(1.52 ± 0.25 mm)

min.

(initial point

of contact)

2 places

Figure 15. J6 connector dimensions

.079

(2 mm)

.787

(19.99 mm)

.079 (2 mm)

.708

(17.983 mm)

52 Cheetah 73FC Product Manual, Rev. C

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.

T a b le 19: FC-SCA pin descr iption s

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 7* Active LED out Open collector out 27* +Port B_in Diff. PECL input pair 8* Reserved 28* -Port B_in 9* Start_1 TTL input 29 Ground 10* Start_2 TTL input 30* +Port A_out Diff PECL output pair 11* -EN bypass port B TTL output 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* DEV_CTRL_CODE_2 TTL input 37 SEL_1 TTL input/output 18* DEV_CTRL_CODE_1 TTL input 38 SEL_0 TTL input/output 19* 5 Volts 39 DEV_CTRL_CODE_0 TTL input 20* 5 Volts 40 5 Volts charge

[1]

26 Ground

*Short pins in mating backpanel connector. [1] This pin may be connected to external lo gic to detect the presence of the drive. The drive connect s this

pin to the common ground.

Cheetah 73FC Product Manual, Rev. C 53

9.5.5 FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 16. The receiver is required to provide the AC coupling to eliminate ground shift noise.

Transmitter

150

Figure 16. FC-AL transmitters and receivers

150

Differential

Transfer Medium

.01µf

150

.01µf

Receiver

9.5.6 Power

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

Four 12 volt pins provide +12 volt power to the drive. The current return for the +12 volt power supply is through the common ground p ins. The supply current and retur n 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 among the voltage and ground 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 charg e pin s is li mi ted by the syst em in which the d ri ve operates. Three of the +12 volt pins are shorter to allow capacitive pre-charging through the longer +12 volt charge pin. Tw o 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 a n appropriate current-l imiting resistor. The LED and the current-li miting 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 20.

T a b le 20: 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 (command executing) Off Spinning up or down Blinks steadily (50% on and 50% off) Format in progress, each cylinder change Toggles on/off

54 Cheetah 73FC Product Manual, Rev. C

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 approp riate current limiting resisto r. The LED and the current limiting r esistor are external to the drive.

9.5.9 Enable port bypass signals

The – Enable By pa ss Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals con tro l 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 signal s are ac tive, low, the PBC bypasses the drive on the associated por t. When an Enable Bypass sign al is active, the correspo nding Port Bypass LE D signal in connector J1 is dri ven low by the disc dr ive. A pull down resistor, 1K, located with the PBC should be used to 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 prim itive seque nc e if th e drive has completed self-test and a hardware failure is not present.

Failure 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 drive’s motor is started accor ding to the Star t_1 and Star t_2 signals descr ibed in Table 21. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

Table 21: 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 Start command is received. 3 Low High Motor spins up after a delay of 12 second s ti me s th e mo dul o 8 value of

the numeric SEL ID of the drive from DC power on.

4 High High The drive will not spin up.

9.5.11 SEL_6 through SEL_0 ID lines

The SEL_6 through SEL_0 ID lines de termi ne dr ive address, and, op tionally, for an Enclosure Servic es Interface. When the Parallel 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-AL p hysical addresses (AL_ PA) . You can thin k of the SEL lines as the equivalent of a backpanel logic pl ug. The dr ives does not provid e pull up r esistors on th ese lines. The backpanel is requi red t o p rovide hig h a nd low in puts t o the SEL_ID line s per the specification s in table 24 on page 57.

Note.

Table 23 gives AL_PA values for each SEL value. The first entr y in the table is SEL_ID 00. The last entry is SEL_ID 7D. SEL_ID 7E is AL_P A 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 b eing ass igned u sing the SEL li nes an d that a “soft” address will be deter mined by FC-AL loop initialization.

When the Parallel ESI line is low, the enclosure backpanel logic switches to ESI mode i f supported. There are two modes of ESI, seven bits of enclosure status and a bidirec tional mode. ESI support and the mode ar e determined by the dri ve using a discovery pr ocess. Refer to the Fibre Chan nel Inter face Manual for a description of ESI operation.

Cheetah 73FC Product Manual, Rev. C 55

9.5.11.1 Parallel Enclosure Services Interface (ESI)

The parallel ESI line is an output from the drive. This li ne provides the enclosure with an indi cation of the present function of the SEL lines. A hi gh level, the default state, indi cates the dri ve requires addr ess in formation on the SEL lines. A low level indicates the dr ive is attempti ng an ES I 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.

9.5.12 Device control codes

The drive inputs a Device Control Code on the DEV_CT RL_C ODE li nes at power up to determine the link rate on the Fibre Channel por ts. B oth ports run at the s ame rate. If th e backpanel do es not connect t o the se lines, the drive has 10K ohm pull up resistors that default the device control code to 7 (1.0625 GHz). Table 22 lists the supported codes.

Table 22: Device control code values

(pin 17)1 (pin 18)

0 0 0 0 1 1 1 1

0 0 1 1 0 0 1 1

(pin 39)

0 Power failure warning. 1 Reserved for auto negotiation of link rate. 0 Reserved. 1 Reserved. 0 Reserved. 1 Reserved. 0 2.125 GHz operation on both ports. 1 1.0625 GHz operation on both ports.

Definition

56 Cheetah 73FC Product Manual, Rev. C

T a b le 23: Arbitrated loop ph ysic al ad dres s (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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

Cheetah 73FC Product Manual, Rev. C 57

9.6 Signal characteristics

This section desc ribes the electrical signal cha racteristics of the drive’s input and output signals. See Table 19 on page 52 for signal type and signal name information.

9.6.1 TTL input characteristics

Table 24 provides the TTL characteristics.

T a b le 24: TTL char acte ristics

State Voltage Current

Input high 1.9 < V Input low -0.5V < V Output high (-EN Bypass A, B) 2.4 < V Output low (-EN Bypass A, B) V Output high (-Parallel ESI) 2.4 < V

VOH > 0.9V Output low (-Parallel ESI) 0 < V Output high (all other outputs) 2.4 < V

VOH > 0.9V Output low (all other outputs) 0 < V

< 5.5V IIH = ±500nA max.

< 0.9V IOL = ±500nA max.

< 5.25V IOH < -3mA

< 0.5V IOL < 3mA

< 0.9 V

< .45V IOL < 2.4mA

< 0.9 V

< .45V IOL < 1.6mA

IOH < -2.4mA I

< -500µA

IOH < -1.6mA I

< -500µA

9.6.2 LED driver signals

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

T a b l e 25: LED drive signal

State Current drive available Output voltage

LED off, high 0 < IOH < 100µA LED on, low I

< -30 mA 0 < VOL < 0.8V

9.6.3 Differential PECL output

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

Table 26: Differential PECL output characteristics

Description Parameter

Serial output voltage swing 300 < V

< 650 mV

out

58 Cheetah 73FC Product Manual, Rev. C

Figure 17 provides the data output valid eye diagram relative to the bit cell time. T able 28 lists the data values.

Bit Time

Vout (mv)

XMIT Eye

Figure 17. Transmit eye diagram

9.6.4 Differential PECL input

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

Table 27: Differential PECL input characteristics

Description Parameter Notes

Serial input voltage swing 400 < V

< 2.000 mV AC coupled

Figure 18 provides the d ata valid eye diagram for typical and mi nimum requirements to recover data at the specified interface error rate. The inputs are AC coupled on the drive. Table 28 lists the data values.

Bit Time

Vin (mv)

RCV Eye

(typical)

(minimum)

Figure 18. Receive eye diagram Table 28: Eye diagram data values

Link rate 1 GHz 2 GHz

Bit time 941 ps 470 ps XMIT eye 725 ps min. 315 ps min.

RCV eye

Typical 659 ps 305 ps Minimum 395 ps 226 ps

Cheetah 73FC Product Manual, Rev. C 59

10.0 Seagate Technology support services Online Services

Internet

www.seagate.com

hours daily by e-mail for your disc or tape questions.

Presales Support:

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

Technical Support:

Disc: http://www.seagate.com/support/email/email_disc_support.html or DiscSupport@Seagate.com. Tape: http://www.seagate.com/support/email/email_tape_support.html or TapeSupport@Seagate.com. Server Appliance: http://www.seagate.com/support/email/email_nas_support.html or NAS_Support@Seagate.com.

Reseller Marketplace

Reseller Marketplace is the storage industry’s first collaborative, e-commerce marketplace offering res ellers the fastest, most efficient online purcha sing process for Seagate storage so lutions. The Reseller Marketplace at http://marketplace.seaga te.com, an exclusive service for US resellers participatin g in the Seagate Partner Program (SPP), is designed to str eamline the purc hasing proces s of Seagate solutio ns and provide unprec edented value to Seagate’s resellers through real-ti me pricin g and availability, fast and easy compari son shopping, and seamless integration with key distributors for a one-stop shopping experience.

for information about Sea gate products and ser vices. Worldwide suppor t is available 24

For support, questions and comments: http://reseller.seagate.com/benefits/T1.html or 1-877-271-3285 (tollfree) 9

SeaBOARD

products and is available 24 hours daily . Set your communications software to eight data bits, no parity and one stop bit (8-N-1).

. to 7 P.M. (eastern time) Mon day through Friday.

A.M

is a computer bulletin board sy st em tha t co ntai ns information about Seagate di sc and t ape dr ive

Automated Services

SeaFONE® (1-800-SEAGATE)

help service s. Using a touch-tone phone, you can fin d answers to service ph one numbers, commonly a sked questions, troubleshooting tips and specifications for disc dri ves and tape drives 24 hours daily. International callers can reach this service by dialing +1-405-936-1234.

SeaFAX

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

is Seagate’s automated FAX delivery system. Using a touch-tone phone, you can obtain tech nical

is Seagate’s toll-free number (1-800-732- 4283) to access our a utomated self-

Presales Support

Our Presales Suppor t staff can he lp you determine whic h Seagate products are bes t suited for your specific application or computer system.

Disc: 1-877-271-3285; Tape: 1-800-626-6637; Server Appliance: 1-800-732-4283.

Online Tape Purchases

US customers can purc hase Seagate data cartri dges, tape supplies, accessories, and selec t Seagate tape drive products 24 hours daily at http://buytape.seagate.com.

60 Cheetah 73FC Product Manual, Rev. C

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 confl icts and other tec hnica l issues. If you need add ition al help, you can talk to a Seagate tec hnical sup por t specia list. Before callin g, note your sy stem configurat ion and dr ive model number (ST####).

SeaTDD™ (+1-405-936-1 687)

comments 24 hours daily and exchange messages with a technical support specialist from 8:00 12:15

. and 1:30 P.M. to 6:00 P.M. (central time) Monday through Friday.

P.M

is a telecommuni cations device for the deaf (TDD) . You can sen d questio ns or

. to

A.M

Customer Service (CSO)

Warranty Service

Seagate offers worldwide customer supp or t for Seagate drives. Seagate direct OEM, Distri bution and System Integrator customers should contact their Seagate service center representative for warranty information. Other customers should contact their place of purchase.

Authorized Service Center s

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

USA/Canada/Latin America Support Services

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Call Center Toll-free Direct dial FAX

Disc: 1-877-271-3285 +405-936-1210 +1-405-936-1683 Tape: 1-800-626-6637 +1-714-641-2500 +1-714-641-2410 Server Appliance: 1-800-732-4283 +1-405-936-1234 +1-405-936-1683

Technical Support (SeaFONE)

1-800-SEAGATE or +1-405-936-1234 (for specific product phone number) FAX: Disc: +1-405-936-1685; T ape and Server Appliance: +1-405-936-1683

SeaFAX SeaTDD SeaBOARD

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+1-405-936-1687 Disc: +1-405-936-1600; Tape: +1-405-936-1630

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Call Center Toll-free Direct dial FAX / Internet

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1-800-636-6349 +1-905-660-4936 or +1-905-660-4951

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e-mail: sgt_cso@gbl.com.br

1.Authorized Service Centers

Cheetah 73FC Product Manual, Rev. C 61

European Support Services

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

If your country is not liste d here, dial our Eu ropea n call c enter at +31- 20-3 16-7222 from 8 :30

. to 5:00 P.M.

A.M

(European central time) Mon day through Friday. The European call cen ter is lo ca ted i n A ms ter dam , The Ne therlands.

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 800-790695 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

Fax Services—All European Countries

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

Africa/Middle East Support Services

For presales, technical suppor t, warranty service and FAX services in Africa and the Midd le East, dial our European call ce nter at +31- 20-316- 7222 fr om 8:3 0

. to 5:00 P.M. (European central ti me) Monday throug h

A.M

Friday, or send a FAX to +31-20-653-3513. The Eu ropean call center is lo cated in Amsterdam, The Netherlands.

Asia/Pacific Support Services

For Asia/Pacific presales and technical suppor t, dial the toll-free number for your specific co untry. The Asia/ Pacific toll-free numbers are available from 6:00 ern time) and 4:00

. to 4:00 P.M. (Singapore time ) Monday through Friday. If your country is not listed here,

A.M

direct dial one of our technical support locations.

Call Center Toll-free Direct dial FAX

Australia 1800-14-7201 +61-2-9725-3366 +61-2-9725-4052 Hong Kong 800-90-0474 — +852-2368 7173 Indonesia 001-803-1-003-2165 —— Japan ——+81-3-5462-2979 Singapore 800-1101-150 +65-488-7584 +65-488-7528 Taiwan — +886-2-2514-2237 +886-2-2715-2923 Thailand 001-800-11-0032165 ——

Warranty Service

Call Center Toll-free Direct dial FAX

Asia/Pacific and Australia — +65-485-3595 +65-488-7503 Japan — +81-3-5462-2904 +81-3-5462-2979

. to 10:45 A.M., and 12:00 P.M. to 6:00 P.M. (Australian east-

A.M

62 Cheetah 73FC Product Manual, Rev. C

Cheetah 73FC Product Manual, Rev. C 63

7, 9

38, 41

37 43

38, 41

Index

Numerics

12 volt pins 53 3rd party reserve command 5 volt pins

Abort Sequence (ABTS) 37

38, 41

24, 34

49 49

abort task set function AC coupling AC power requirements ACA active status ACA active, faulted initiator status Accept (ACC) acoustics active LED Out signal Actual retry count bytes command actuator

assembly design adaptive caching Address Discovery (ADISC) addresses air cleanliness air flow

illustrated air inlet Alternate credit model altitude ambient ambient temperatu re ANSI documents

fibre channel

SCSI arbitrated loop physical address (AL_PA) arbitration asynchronous event notification audible noise automatic contingent allegiance autowrite and read reallocation

programmable average idle current average rotational latency

24, 34, 35

35 26

backpanel 52 backplane basic link service frames Basic_Accept (BA_ACC) Basic_Reject (BA_RJT) BB BB-Credit bits per inch buffer

38, 41

data

space

busy status bypass circuit Byte check command bytes per surface bytes per track

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

formatted

unformatted case temperature CF

38, 41 Change definition command character sync charge pins check condition statu s Class 3 parameters class B limit Class valid clear ACA function clear task set function commands supported Common features Compare command Concurrent sequences condensation condition met/good status connector

illustrated

requirements continuous vibration Continuously increasing offset Control mode page (0Ah) command cooling Copy and verify command Copy command CRC

error CS

38 Current profiles customer servic e cylinders/tracks per surface

data block size

modifing the data buffer to/from disc media data heads

read/write data rate

internal data transfer rate

64 Cheetah 73FC Product Manual, Rev. C

data valid eye 58

Date code page command DC power

defect and error management deferred error handling description DEV_CTRL_CODE device control code values device control codes device selection IDs devices differential PECL input dimensions Disable page out command disc rotation speed Disconnect/reconnect control (page 02h) command

Download microcode and save modes (5) Download microcode mode (4) Download microcode wit h offs ets an d save m ode (7)

Download microcode with offsets mode (6) drive drive active LED connection drive characteristics drive fault LED connection drive ID drive ID/option select headers drive mounting drive orientation drive select driver signals drivers and receivers dual port support

requirements

29, 35

electrical

description of connector signal characteristics

specifications electromagnetic compatibility electromagnetic interference (EMI) electromagnetic susceptibility EMI

13 EMI requirements enable bypass

port A

port B

signal

state

15 Enclosure Services interface Enclosure services page command environment environmental

interference limits

requirements environmental control error

detection mechanisms, FC

management

rates

error correction code

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

frames

reply frames Extended sense command Extent reservation command

fabric 41

1, 4

Fabric Address Notification (FAN)

40 40

Fabric Login (FLOGI) FAN

41 fault LED out signal FC-AL

33, 52

document interface options supported physical interface SCA device connector, illustrated

selective reset FCC rules and regulations FCP

for SCSI, document

response codes

task management functions FC-PH document features

interface Fibre Channel documents Fibre Channel Interface Manual Fibre Channel Services Field poin ter bytes command firmware

corruption Firmware download option command Firmware numbers page command flawed sector reallocation FLOGI

received on Port A

received on Port B Force unit access command form factor format Format command execution time Format page (03h) command Format unit command front panel FS function

38, 39, 41

Cheetah 73FC Product Manual, Rev. C 65

complete, code 00 37 not supported, code 05 reject, code 04

Good status 49 gradient ground shift noise grounding

25, 26

hard assigned arbitrated loop physical address

(AL_PA)

HDA

25, 34, 35, 36

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

read/write data heat removal heat source host equipment hot plugging the drive humidity humidity limits

IC 38

ID and configuration options Implemented operating def. page command Information excepti ons control page (1Ch) c omman d

38, 41

Initiator control Inquiry command inquiry data installation

guide interface

commands supported

description

error rate

errors

illustrated

physical

requirements interleave

minimum intermediate/condition met/good status intermediate/good sta tus Intermix internal data rate internal defects/errors internal drive characteristics

J1 connector 33

33, 34

J6 connector Jumper settings page command jumpers

latency

6, 10 11

42 42

9, 10

45 45

average rotational LBdata LED driver signals link rate Link Service Reject (LS_RJT) link services supported Lock-unlock-cache command Log select command Log sense command logic power logical block address logical block realloc ati on scheme logical block size logical segments Logout (LOGO) loop

loop position loop position report LS_RJT

LSI circuitry

50, 54 disruption initialization

FC-AL options FC-AL options

38, 41

maintenance 13

maximum delayed motor start

maximum start current mean time between failure (MTBF) media description minimum sector interleave miscellaneous feature support

Adaptive caching Asynchronous event notification Automatic contingent allegiance Deferred error handling FC-AL selective rese t Parameter rounding Queue tagging Reporting actual retry count Segmented caching SMP = 1 in Mode Select command Synchronized (locked) spindle operation Zero latency read

miscellaneous status support

ACA active ACA active, faulted initiator Busy Check condition Condition met/good

49 49

66 Cheetah 73FC Product Manual, Rev. C

Good 49 Intermediate/condition met/good

Intermediate/good Reservation conflict

Task set full miscorrected media data Mode select

(10) command

46, 48

command Mode sense

(10) command

command

data, table monitoring state motor start

controls

option mounting

holes

orientations mounting configuration mounting configuration dimensions MTBF

13, 14, 24

defined

N_Port Login (PLOGI) 37

payload

payload values NN

38, 41 Node Name Node name noise

audible noise immunity non-operating

temperature non-operating vibration

26, 28

office environment 28 old port state

42 42 42

FC-AL options OPEN Full Duplex

FC-AL options OPEN half duplex

FC-AL options Open sequences per exchange

26, 28

7, 42

operating option configurations option selection options orientation OS out-of-plane distortion

P_LOGI

received on Port A received on Port B

39 41

package size packaged parameter rounding pass-through state PBC

50, 54 PBdata PCB

temperature PCBA Peak bits per inch peak operating current peak-to-peak measurements PECL input performance charact eris tic s

detailed

general performance degradation performance highligh ts physical damage physical interface

description physical specifications PI

39, 40 pin descriptions PN

38, 41 port bypass circuit port bypass LED connectio n Port DISCovery Port Discovery (PDISC) port identifier field port login

accept Port Name Port name (initiator’s) power

dissipation

requirements, AC

requirements, DC

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

cooling private loop

FC-AL options Proc Assc Process Accept (ACC) Process Login (PRLI) Process Login Accept (ACC) payload process login payload data

39 39

15, 50, 54

39, 40

37, 39

Cheetah 73FC Product Manual, Rev. C 67

Process Logout (PRLO) 37 public loop

FC-AL options

pull down resistor

queue tagging 49

radio interference regulations 3

38, 41

Random relative offset RCD bit Read buffer command Read capacity command Read combined header and data mode (0) Read command Read data mode (2) Read defect data command Read descriptor mode (3) Read extended command Read Link Status (RLS) Read long command read/write data heads Reassign blocks command Receive buffer field size receive buffer field size Receive diagnostic results command receive eye

receivers recommended mounting reference

Regenerate command Register FC-4 Types (RFT_ID) Relative address command relative humidity Release command Released (10) command reliability

reporting actual retry count Request sense command reservation conflict status Reserve command Reserved (10) command resonance return information Rezero unit command Rigid disc drive geometry page

rotation speed running disparity

diagram

documents

and service specifications

command

safety 3

38, 41

43, 44

SCA part numbers SCSI interface

commands supported SCSI Interface Product Manual Search data

equal command

high command

low command Seek command seek error

13, 15

7, 15

defined

rate Seek extended command seek performance characteristics seek time

average typical

full stroke typical

single track typical segmented caching SEL ID

lines

standard feature Self-Monitoring Analysis and Reporting Technology

Send diagnostics page command Sequential delivery service

life

philosophy

tools service and return information Service Options Service options Set limits command shielding shipping shipping container shock

and vibration shock mount signal

characteristics

LED driver single-unit shipping pack kit SMART SMP = 1 in Mode Select command SO

38, 41 spindle brake Stacked connection req. standards Start unit/stop unit command start/stop time support services Supported diagnostics pages command surface stiffness

68 Cheetah 73FC Product Manual, Rev. C

allowable for non-flat surface 35 switches Synchronize cache command synchronized spind le

system chassis

operation

target reset function 37

58 19

43, 44

task management functions

24, 34 24

37 37

Abort task set

Clear ACA

Clear task set

Target reset

terminate task task management response codes

Function complete 00

Function not supported 05

Function reject 04 task set full status technical support servic es temperature

ambient

case

24 gradient limits

24 non-operating PCB and HDA regulation See also cooling

terminate task function terminators Test unit ready command Third-party Proces s Logo ut (TRP LO ) tracks per inch tracks per surface Translate page command transmit eye diagram transmitters transporting the drive TTL input characteristics

vibration Vital product data page command

26, 28

warranty 18 word sync Write and verify command Write buffer command Write combined header and data mode (0) Write command Write data mode (2) write errors Write extended command Write long command Write same command

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

zero latency read 49 zone bit recording (ZBR)

UI 39, 40

39, 40

unique identifier Unit attention page (00h) command Unit serial number page command unrecoverable

error write error, defined

unrecovered media data

Valid version level 38, 41 Verify command Verify error recovery page (07h) command

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

Publication Number: 83329482, Rev. C, Printed in USA

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