Seagate Barracuda ST136475FC Product Manual

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Barracuda 36FC Disc Drive

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ST136475FC

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Product Manual, Volume 1

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Barracuda 36FC Disc Drive

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ST136475FC

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Product Manual, Volume 1

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Publication number: 77767543, Rev . B

Seagate , Seagate Technology, and the Seagate logo are registered trademarks of Seagate T echnology, LLC. Barracuda, SeaF AX, 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

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Revision status summary sheet

Revision Date Writer/Engineer Sheets Affected

A 4/28/99 L. Newman/J. Bentley 1/1, v thru viii, 1 thru 68. B 08/22/2000 K. Schweiss/B. Reynolds ii, 1, 41, 59-61, and backcover

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Barracuda 36FC Product Manual, Rev. B v

Contents

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

4.2 Seek performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

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

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

4.2.3 General performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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

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

4.5 Cache operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Write errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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

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

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

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

6.2.1 Conducted noise immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.2 Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

6.3 Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.4 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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vi Barracuda 36FC Product Manual, Rev. B

6.4.3 Effective altitude (sea level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

6.4.7 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

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

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

7.1 Drive internal defects/errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

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

7.3 FC-AL system errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

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

8.1 Drive ID/option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.2 LED connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.2.1 J6 connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8.3 Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8.4 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8.4.1 Air flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.5 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

8.6 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

9.0 Interface requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1 FC-AL features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.1 Fibre Channel link service frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.2 Fibre Channel task management functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.3 Fibre Channel task management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.4 Fibre Channel port login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

9.1.5 Fibre Channel port login accept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.6 Fibre Channel Process Login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.7 Fibre Channel Process Login Accept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.8 Fibre Channel fabric login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

9.1.9 Fibre Channel fabric accept login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.1.10 Fibre Channel Arbitrated Loop options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

9.2 Dual port support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

9.3 SCSI commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

9.3.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.3.2 Mode Sense data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.4 Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

9.5 FC-AL physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.2 Connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5.3 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.5.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

9.5.5 FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.6 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.7 Fault LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.8 Active LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.5.9 Enable port bypass signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.10 Motor start controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.5.11 SEL_6 through SEL_0 ID lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

9.6 Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.6.1 TTL input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.6.2 LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.6.3 Differential PECL output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

9.6.4 Differential PECL input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

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

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Barracuda 36FC Product Manual, Rev. B vii

List of Figures

Figure 1. Barracuda 36FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Barracuda 36FC disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Typical Barracuda 36FC drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4. Typical Barracuda 36FC drive +5V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 5. DC current and power vs. input/output operations per second . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 6. Locations of PCBA components listed in Table 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 7. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 8. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 9. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 10. LED indicator connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 11. Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 12. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 13. Port bypass circuit physical interconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 14. FC-AL SCA device connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 15. J6 connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 16. FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 17. Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Figure 18. Receive eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Page 10

Page 11

Barracuda 36FC Product Manual, Rev. B 1

1.0 Scope

This manual describes Seagate Technology®, LLC, Barracuda 36FC (Fibre Channel) disc drives. Barracuda 36FC drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifica-

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

Figure 1.

Barracuda 36FC

family disc drive

Page 12

Page 13

Barracuda 36FC Product Manual, Rev. B 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 guara ntee the s pec if ied per for ma nc e char acteristics. Mounting by bottom holes must meet the requirements of Section 8.5.

2.1 Standards

The Barracuda 36FC 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 Barracuda 36FC disc dr i ve is a UL recogni zed componen t per UL1 950, C SA certified to CAN/ CSA C22. 2 No. 950-95, and VDE certified to VDE 0805 and EN60950.

2.1.1 Electromagnetic compatibility

The drive, as 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 pe rformance o f the dr ive. See Section 5.1.1 o n page 13 and Table 1, DC power requirements, on page 19.

2.1.2 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:

• 486, Pentium, and PowerPC microprocessors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

• Mouse

Although the test system with this Seagate 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.

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4 Barracuda 36FC Product Manual, Rev. B

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

Barracuda 36FC Installation Guide

Seagate part number: 77767544

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) NCITS TR-19 Private Loop SCSI Direct Attach (PLDA) NCITS TR-20 Fabric Loop Attachment (FC-FLA) SFF-8045 Specification for 40-pin SCA-2 Connector with Parallel Selection. SFF-8067 Specification for 40-pin SCA-2 Connector with Bidirectional Enclosure Services

Interface.

ANSI Small Computer System Interface (SCSI) Documents

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

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

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Barracuda 36FC Product Manual, Rev. B 5

3.0 General description

BarracudaTM 36FC drives combine sof t adjacent layer (SAL) magnetoresistive (MR) heads, par tial respo nse/ maximum likelihood (PRML) read channel electronics, embedded servo technology , and a Fibre Channel interface to provide high performance, hig h capacity data storage for a variety of systems in cluding engineering workstations, network servers, mainframes, and supercomputers.

Barracuda 36FC dri ves are random access stora ge devices designed to supp or t the Fibre Cha nnel Arbitrate d Loop (FC-AL) and SCSI Fibre Channe l Protocol as describe d in the ANSI specificatio ns, this document, and the Fibre C hannel Interface Manual (part number 77767 496 ) which d escr ibes the general i nterface character- istics of this drive. ST136475FC drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.

The head and disc as sembly (HDA) is sealed at the factory. Air recirculates withi n the HDA through a nonreplaceable filter to maintain a contamination-free HDA environment.

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

Figure 2. Barracuda 36FC disc drive

Barracuda 36FC drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibility of destroying or degrading dat a by landing in th e data zone. The heads au tomatically go to the lan ding 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.

Barracuda 36FC dr ives decode track 0 location d ata from the ser vo data embedded on each sur face to eliminate mechanical transducer adjustments and related reliability concerns.

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

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6 Barracuda 36FC Product Manual, Rev. B

3.1 Standard features

Barracuda 36FC drives have the following standard features:

• Integrated dual port FC-AL controller

• Concurrent dual port transfers

• Support for FC arbitrated loop, private and public attachment

• Differential copper FC drivers and receivers

• Downloadable firmware using the FC-AL interface

• 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.

• Supports SCSI Enclosure Services through the interface connector

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

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

• Selectable frame sizes from 128 to 2,112 bytes

• Industry standard 3.5-inch low profile form factor dimensions

• Programmable logical block reallocation scheme

• Flawed logical block reallocation at format time

• Programmable auto write and read reallocation

• Reed-Solomon error correction code

• Sealed head and disc assembly (HDA)

• No preventive maintenance or adjustments required

• Dedicated head landing zone

• Automatic 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

• 1,024 Kbyte data buffer. See Section 4.5

• Embedded servo design

• Reallocation of defects on command (Post Format)

• Fibre Channel interface transports SCSI protocol

3.2 Media description

The media used on the dr ive has a di ameter of a pproximately 84 mm (approximate ly 3.4 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.

• 7,200 RPM spindle; average latency = 4.17 msec

• Command queuing of up to 128 commands

• Background processing of queue

• Supports start and stop commands

• Adaptive seek velocity; improved seek performance

3.4 Reliability

• 1,000,000 hour MTBF

• LSI circuitry

• Balanced low mass rotary voice coil actuator

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Barracuda 36FC Product Manual, Rev. B 7

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

• Dithering

3.5 Unformatted and formatted capacities

Formatted capacity depends on the spare reallocation sectors scheme selected, the number of data tracks per sparing zone, and the number of alternate sectors (LB As) per sparing zone. The following table shows the standard OEM model read capacities data. Total LBAs = read capacity data shown below + 1.

Formatted Unformatted

ST136475FC 43D671Fh blocks (36.42 Gbytes with 512 bytes per block) 43.2 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. ST136475FC dr ives use a zone spar ing scheme. The drive is divided into frequency zones with a variable number of spares in each zone.

3.6 Programmable drive capacity

Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select (6) parameter list table in the Fibre Channel Interface Manual, par t number 7767 496. A value of zero in the Number of Blocks field indica tes that the dr ive will not change the ca pacit y 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 drive capacity to the value in the Number of Blocks field. To restore the drive to maxi mum capacity, enter a value of FFFFFFFF in the Number of Blocks field.

3.7 Factory-installed accesso r ies

OEM standard drives are shipped with the Barracuda 36FC Installation Guide (part number 77767544).

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 shippi ng pack. The drive is nor mally shipped in bulk packaging to provide maximum p rotection

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 Barracuda 36FC Installation Guide, part number 77767544, is usually included with each standard OEM drive shipped, but extra copies may be ordered.

3.9 User-installed accessories

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

• Evaluation kit, part number 73473641. This kit provides an adapte r car d (“T-card”) to allow cable connectio ns 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.

Page 18

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Barracuda 36FC Product Manual, Rev. B 9

4.0 Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Barracuda 36FC drives.

4.1 Internal drive characteristics

ST136475FC

Drive capacity 36.4 ..........................Gbytes (formatted, rounded off value)

Read/write data heads 20

Bytes per track 186,000 ....................Bytes (average, rounded off values)

Bytes per surface 2,184 ........................Mbytes (unformatted, rounded off value)

Tracks per surface (total) 11,721 ......................Tracks (user accessible)

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

Peak bits per inch 223 ...........................KBPI

Internal data rate 137-240....................Mbits/sec (variable with zone)

Disc rotation speed 7,200 ........................rpm (+

Avg rotational latency 4.17 ..........................msec

4.2 Seek performance characteristics

See Section 9.5, “FC-AL physical interface” on page 49 and the Fibre Channel Inte rface Manual (part number

77767496) for additional timing details.

4.2.1 Access time

0.5%)

Including controller overhead (without disconnect)

Read Write

Average Typical Single track Typical Full stroke Typical

1. Execution time measured from receipt of the FCP 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.

3,4

3,4 3,4

7.7 8.4

0.9 1.2 16 17

1, 2

(msec)

4.2.2 Format command execution time for ≥ 512-byte sectors

ST136475FC

Maximum (with verify) 80 minutes Maximum (without verify) 40 minutes

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10 Barracuda 36FC Product Manual, Rev. B

4.2.3 General performance characteristics

ST136475FC

Minimum sector interleave 1 to 1

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

Minimum 16.2 MBytes/sec Average 25.3 MBytes/sec Maximum 28.3 MBytes/sec

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

port (dual port = 212 Mbytes/sec*)

Logical block sizes

Default is 512-byte data blocks Variable 512 to 4,096 bytes per sector in n + 4 intervals (n = number of bytes per sector).

Read/write consecutive sectors on a track

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

Overhead time for head switch in sequential mode Overhead time for one track cylinder switch in sequential mode Average rotational latency

*Assumes no errors and n o relocated log ical b loc ks. Rate meas ured from th e start of the first logica l block transfer to or from the host.

Yes

Negligible

1.0 msec

1.1 msec (typical)

4.17 msec

4.3 Start/stop time

If the Motor Start option is disabled, the drive becomes ready within 31 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 31 seconds. Stop time is less than 20 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 25 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-ahe ad) and multi-segmented cache con trol algorithms th at 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 Sel ect command wi th the proper 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.

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Barracuda 36FC Product Manual, Rev. B 11

4.5 Cache operation

Note.

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

Of the 1,024 kbytes physical buffer space in the d rive, 924 kbytes can be u sed as a cac he. 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 Fibre Channel Interface Manual), data reques 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) bit is se t to 1 in bit 4 of byte 2 of the Mode Select parameters page 08h. Default is one 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 ca che’s overall perfor- mance, allowing a wide range of user-selectable configu rations. The drive supports operation of any inte ger number of segments from 1 to 16. Divide the 924 Kbytes 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 co mmand is issued, if RCD=0 , the cache is first checked to see if any logical blocks that are to be writte n are already stored in the cach e from a previous read or write comman d. If there are, the respective cache segments are cleared. The new data is cached for subsequent Read commands.

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12 Barracuda 36FC Product Manual, Rev. B

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.

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Barracuda 36FC Product Manual, Rev. B 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, environmental requirements and drive mounting constraints

Seek error rate: Read Error Rates

Recovered Data Unrecovered Data Miscorrected 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 57 MTBF: 1,000,000 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 accordance with thi s manual using DC power as defined in paragraph 6.2, “DC power requirements.”

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

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

• Assume random data.

seeks

bits transferred (OEM default settings)

bits transferred

bits transferred with minimum receive eye.

bits transferred with typical receive eye.

5.1.0.1 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.

5.1.1 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 Write errors

Write errors can occur as a result of media defects, environmental interference, or equipm ent 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).

5.1.3 Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. There must not be more than ten recoverable seek errors in 10 drive automatically per forms an error recover y process. If the error r ecovery process fails, a seek posi tioning

physical seek operations. After detect ing an i nit ial se ek er ror, the

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14 Barracuda 36FC Product Manual, Rev. B

error (15h) is repor ted wit h a Medium err or (3h) or Har dware error (4h) repo rt ed in the Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculatio ns. Refer to the Fibre Channel Interface Manual, part number 77767496, for Request Sense information.

5.2 Reliability and service

You can enhanc e the reliability of Ba rracuda 36FC disc drives by ensu ring that the drive receives ade quate cooling. Section 6.0 provides temperature measurements and se ction 8.4 provides cooling and air flow information which you can use to enhance the service life of the drive.

5.2.1 Mean time between failure (MTBF)

The production disc drive achieves an MTBF of 1,000,000 hours when operated in an environment that ensures the case temperatures spec ified in 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

• Read/seek/write operation during 20% of power-on hours

• Operating at nominal voltages

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

exceeded. Drive failure means any stoppage or substandard performance caused by drive malfunction. A S.M.A.R.T. (Self-Monitor ing Analysis and Repor ting Technology) predictive failure indicates that the drive is

deteriorating to an imminent failure and is considered an MTBF hit.

5.2.2 Field failure rate vs time

The expected field failure rate is 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

• Read/seek/write operation 20% of POH

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

exceeded.

Month Parts per million (PPM)

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

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Barracuda 36FC Product Manual, Rev. B 15

Failure rate is calculated as follows:

• No system-induced failures counted

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

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

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

5.2.3 Preventive maintenance

No routine scheduled preventive maintenance is required.

5.2.4 Service life

The drive has a usefu l service life of five years. Depot repair or r eplac eme nt of major parts is perm itt ed d uring 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 loop operati on. The 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.

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16 Barracuda 36FC Product Manual, Rev. B

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 intended 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.

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

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

S.M.A.R.T. delay times 30 milliseconds 200 milliseconds

Fully-enabled delay DEXCPT = 0, PERF = 0

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 01-5Dx x sens e cod e. The erro r code is p reser ved 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.

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Barracuda 36FC Product Manual, Rev. B 17

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 unaccepta ble and decremented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increm ents such that it reaches the predictive 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 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 repaired or replaced, at Sea gate’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 transporting the repair or replacement item to the customer. For more detailed warranty information, refer to the standard terms and conditions of purchase for Seagate products on your purchase documentation.

The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472. You can also determine remaini ng warranty us i ng the S ea 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 repair centers may refuse receip t of compon ents imp roper ly pa ckaged or obviously damaged in transit. Contact your authorized S eagate distr ibutor to purchase ad ditional boxes. Seagate recommends sh ipping by an air-ride carrier experienced in handling computer equipment.

Product repair and return information

Seagate customer se rvice centers are the only facilities author ized to service Seagate drives. Seagate does not sanction any third-par ty repair facilities. Any unauthor ized repair or tampering with the factor y seal voids the warranty.

Page 28

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Barracuda 36FC Product Manual, Rev. B 19

6.0 Physical/electrical specifications

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

6.1 AC power requirements

None.

6.2 DC power requirements

The voltage and current 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

ST136475FC

Notes (Amps) (Amps)

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

(peak DC) DC [3] 0.75 2.63

(peak AC) AC [3] 3.1 Delayed motor start (max) DC [1] [4] 0.55 0.25 Peak operating current: Typical DCX Maximum DC [1] 0.75 1.30 Maximum (peak) DC 1.1 2.6

[1] [7] 0.7 0.95

[1] [6] 0.75 1.25

[1] Measured with average reading DC ammete r. Instantaneous +12V current peaks wi ll exceed these val-

ues. Power supply at nominal voltage.

[2] For +12 V, a –10% tolera nc e i s allowed during ini tia l spindle start but must retu rn to ±5% before reaching

7,200 RPM. The ±5% must be maintained after the dr ive signifies that its power-up sequence has been

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

Motor command. [5] See paragraph 6.2.1, “Conducted noise immunity.” Specified voltage tolerance includes r i ppl e, nois e, and

transient response. [6] Operating condition is defined as random 8 block reads at 208 I/Os per second. Current and power speci-

fied at nominal voltages. Increasing +5 volt supply by +5% increases 5 volt current by < 0.5%. Decreasing

+12 volt supply by 5% increases +12 volt current by 1.4%. [7] During idle, the dr ive heads are relocated every 60 seconds to a random location within the ban d from

track zero to one-fourth of maximum track.

General DC power requirement notes.

1. Minimum current loadi ng for each supply voltage is not less than 4% of the maximum 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.

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20 Barracuda 36FC Product Manual, Rev. B

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-tes ts are perfor med. 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.

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

Note:

+12 Volt Current during spindle start – Typical Amperes

3.0

2.5

2.0

1.5

Amps

1.0

0.5

0.0

Min. AC

T0 T1 T2 T3 T4

Peak AC Envelope

Peak DC

0.0 2.0 4.0 6.0 10.0 12.0 14.0 16.0

Figure 3. Typical Barracuda 36FC drive +12V current profile

8.0 18.0

TIME (seconds)

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Barracuda 36FC Product Manual, Rev. B 21

+5 Volt Current during spindle start – Typical Amperes

1.2

1.0

AC component

0.8

0.6

Amps

0.4

0.2

Nominal (average) DC curve

0.0 T0

T1 T2 T3 T4

0.0 5.0 10.0 15.0 25.0 30.0 35.0 40.0

20.0 45.0

TIME (seconds)

Figure 4. Typical Barracuda 36FC drive +5V current pr o file

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22 Barracuda 36FC Product Manual, Rev. B

6.3 Power dissipation

To obtain typical operating random read (8 blocks) power dissipation at nominal voltages, refer to Figure 5. The drive user must decide what number of I/O ope rations constitutes a typica l number of I/O operations for their installation. To calculate BTUs per h our, multiply watts by 3.4123. Typic al Power dissipation under idle conditions is 14.9 watts (50.8 BTUs per hour).

1.4

1.2

1.0

0.8

Amperes

0.6

0.4

0.2

0.0 0204060

I/Os per Second

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

80 100 120

140

5V A 12V A Watts

Watts

6.4 Environmental limits

Temperatu re an d humidity values experienced by the drive must be such that cond ens ati on doe s n ot o cc ur on 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.

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Barracuda 36FC Product Manual, Rev. B 23

Table 2: PCBA and HDA temperatures

Items in Figure 6

Maximum allowable case temp erature (°C) operating

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

HDA [2] 60 45 1 67 52 2 73 58 3 87 72 465 50

Notes.

[1] Section 8.4.1 descr ibes the air-flow patter ns used when gene rating the 1 million hours MTBF guide-

lines in column 2. Air flow was opposite tha t s hown in S ec tio n 8. 4.1. Local air velocity was 0 .92 m/s ec (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.

HDA Temp.

Check Point

Figure 6. Locations of PCBA components listed in Table 2

1.00

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24 Barracuda 36FC Product Manual, Rev. B

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 vibration

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 5.0 Gs at a maximum duration of 11 ms ec (half s inewave). 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 10 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 inc ludes both isolated drives and integrated drives.

The drive subjected to nonrepeti tive shock not exceeding 50 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 150 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 nonr epetiti ve shock not exceeding 100 Gs at a maxi mum durati on of 0.5 ms ec (hal f sinewave) does not exhibit device damage or performance degradation. Sh ock may be applied in the X , Y, or Z axis.

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Barracuda 36FC Product Manual, Rev. B 25

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. Recommended mounting

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26 Barracuda 36FC Product Manual, Rev. B

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

5-22 Hz @ 0.02 inches (0.51 mm) displacement peak to peak 22-350 Hz @ 0.5 G 0 to peak

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

b. Operating - abnormal

5-22 Hz @ 0.03 inches (0.76 mm) displacement peak to peak 22-350 Hz @ 0.75 G (X, Y, or Z axis) 0 to peak

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 @ 0.081 inches (2.05 mm) displacement peak to peak 22-350 Hz @ 2.00 G 0 to peak

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

6.4.5 Air cleanliness

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

6.4.6 Acoustics

Sound power during idle mode shall be 4.2 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.

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Barracuda 36FC Product Manual, Rev. B 27

6.5 Mechanical specifications

Refer to Figure 8 for detailed mounting configuration dimensions. See Section 8.5, “Drive mounting.”

Height: 1 .62 in 41.1 mm Width: 4.000 in 101.6 mm Depth: 5.75 in 146.05 mm Weight: 2.2 pounds 0.99 kilograms

Motherboard Ref.

R[3]

1.875–.0051.875–.005

(.809)

[4]

Common centerline

in the horizontal

(X axis) direction

of the drive

Pin 1

[2]

Low Profile

Half Height

.136

[1]

Notes:

Mounting holes three on each side, 6-32 UNC.

[1]

Max screw length into side of drive is 0.15 in. (3.81 mm).

Mounting holes four on bottom, 6-32 UNC.

[2]

Max screw length into bottom of drive is 0.15 in. (3.81 mm).

Keep-out zone for any components on

[3]

backplane. Connector is centered on module and flush

[4]

with end of base.

Inches Millimeters

5.75

–

0.025

4.00

–

0.015

1.026

max

.620

ref

4.000

–

0.010

.250

0.011

—

0.005

3.750

–

0.010

2.380

–

0.010

1.750

–

0.010

0.181

0.013

—

0.007

1.622

0.027

—

0.021

1.620

–

0.025

.1215

max

.1215

max

146.05

101.6

26.060

15.748

101.600

6.350

95.25

60.45

44.450

4.590

41.20

41.150

3.080

– .64 – .381

max ref – .25 + .28

— .12 – .25

– .25 – .50

+ .33 — .18 + .69

— .53 – .64

max max

Figure 8. Mounting configuration dimensions

Page 38

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Barracuda 36FC Product Manual, Rev. B 29

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). T ools 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 t he r ec overy level for a single LBA. The to tal 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 error recovery a lgorithms co nsists of 12 levels for read recoveries and 16 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 individua l LBA s. The time s given do not i nclude t ime taken to perform r eall ocations. Rea llocati ons 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 perform reallocation is not counted against the recovery time limit.

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30 Barracuda 36FC Product Manual, Rev. B

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 Retr y Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive does not report any unrecovered errors.

Table 3: Read and write retry count maximum recovery times

Maximum recovery time per

Read retry count

0 108.68 0 91.96 1 125.4 1 117.04 2 426.36 2 125.4 3 459.8 3 150.48 4 526.68 4 300.96 5 593.56 5 359.48 6 677.16 6 593.56 7 802.56 7 618.64 8 836 8 660.44 9 911.24 9 685.52 10 2,371.24 10 1,735.68 11 (default) 3,422.04 11 1,760.76

LBA (cumulative, msec)

Write retry count

12 1,769.12 13 1,794.2 14 1,944.68 15 2,003.2

Maximum recovery time per

LBA (cumulative, msec)

[1] Setting these retr y co unts to a value below the default setting could result i n degradation of t he unrecov-

ered error rate. For example, suppose the read/wr ite recovery page has the RC bit = 0, th e read retry count set to 4, and the recovery ti me limit set to 450. A 4-block read command can take up to 526.68 msec recovery time for each block and a maximum of 4 50 msec recovery for all four blocks. If either o f these limits is reached and a block has not yet been recovered, the command wil l end with Che ck Condition status and an unrecoverable read error will be reported.

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 ho st a bou t numer ous k ind s of error s or faults.

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

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

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Barracuda 36FC Product Manual, Rev. B 31

8.0 Installation

Barracuda 36FC disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. Simply plug the dr ive into the ho st’s 40-pin Fibre Channel backpanel conn ector (F C-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 22 on page 55). If you set the AL_PA on the backpanel to any value other than 0, the device plugged into the backpanel’s SCA connector inherits this AL_PA. In the event you don’t successfully assign unique hard addresses (and therefore have duplicate select ion IDs as si gne d to t wo or mo r e devices), the FC- A L gen erate s a mess age ind ic ati ng t his c ondition. If you set the AL_PA on the backpanel to a value of 0, the system issues a unique soft-assigned physical address automatically.

Loop initialization 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 option selec tions in the connector pr ior to applying power to the dr ive. If you change options after applying power to the drive, recycle the drive power to activate the new settings.

• It is not necess ar y to low-level format th is dr ive. The d rive is shippe d fro m 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 51 provides the pi n des criptions 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 connections (see Figure 10 on pa ge 32). See Sections 9.5.7, 9. 5.8, and 9.5.9 for descri ptions of LED functions.

Figure 9. Physical interface

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32 Barracuda 36FC Product Manual, Rev. B

Drive Front

Pin 1

Reserved

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

[1] The drive has a 2.2K ohm resistor in series with thi s LED dri ver. 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-li miting resi stor is requ ired when conn ecting an LE D to this pi n. 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 c onditions specified in Section 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.”

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Barracuda 36FC Product Manual, Rev. B 33

8.4.1 Air flow

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

Forced air flow may be required to keep temp eratures at or be low the s pecified case te mpe 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 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 the ou t-of-plane surface disto rtion (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 Tech-

K x X = F < 15lb = 67N

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34 Barracuda 36FC Product Manual, Rev. B

nology 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.

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.

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Barracuda 36FC Product Manual, Rev. B 35

9.0 Interface requirements

This section partially describes the interface requirements as implemented on ST136475FC drives. Additional information is provided in the Fibre Channel Interface Manual (part number 77767496).

9.1 FC-AL features

This section lists the Fibre Channel-specific features supported by Barracuda 36FC drives.

9.1.1 Fibre Channel link service frames

Table 4 lists the link services supported by Barracuda 36FC drives.

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 Chann el Pr oto co l (F C S CSI F CP) task management func ti ons supported.

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

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36 Barracuda 36FC Product Manual, Rev. B

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 09 09 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 with 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.

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Barracuda 36FC Product Manual, Rev. B 37

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 09 09 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 rec eive

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: Process Login (PLRI) payload

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 Barracuda 36FC 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

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38 Barracuda 36FC Product Manual, Rev. B

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 09 09 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.

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Barracuda 36FC Product Manual, Rev. B 39

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 09 09 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 buff er 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

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40 Barracuda 36FC Product Manual, Rev. B

9.1.10 Fibre Channel Arbitrated Loop options

Table 13 lists the FC-AL options supported by Barracuda 36FC 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

ST136475FC 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 por ts are con nec ted in th e sa me l oop and h ar d add ress i ng is used , at least one por t wi ll attempt taking a soft address to prevent an address conflict.

Note.

When a Barracuda 36FC drive is connected in loops with previous Seagate FC drive products: Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)

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

the connection of Port A a nd B for thes e p roduc ts must follow the requirements in thei r product manuals.

Subject to buffer availability, the Barracuda 36FC drives support:

• Concurrent por t transfers—The drive su ppor ts re ceiving transfers on both po r ts at t he same ti me when th e ports are on independent loops.

• Full duplex—The drive su pports sending F CP_Data, FCP_RSP, FCP_XFR_RDY and ELS transfers while receiving frames on both ports.

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Barracuda 36FC Product Manual, Rev. B 41

9.3 SCSI commands supported

Table 14 lists the SCSI commands that ST136475FC drives support.

T a b le 14: Supported command s

Command code Supported 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 [9.3.1]

NBlock format Y Bytes from Index Y Physical sector format N DPRY bit supported Y DCRT bit supported Y STPF bit supported Y IP bit supported Y DSP bit supported Y IMMED bit supported

N VS (vendor specific) 07h Y Reassign blocks 08h Y Read 0Ah Y Write 0Bh Y Seek 12h Y Inquiry

Y Vital product data page (00h)

Y Unit serial number page (80h)

Y Implemented operating def. page (81h)

Y Firmware numbers page (C0h)

Y Date code page (C1h)

Y Jumper settings page (C2h)

Y Device behavior page (C3h) 15h Y Mode select (same pages as Mode Sense command shown below) [3] 16h Y Reserve

Y 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) DTDC and DIMM not used

Y Format page (03h)

Y Rigid disc drive geometry page (04h)

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42 Barracuda 36FC Product Manual, Rev. B

T a b le 14: Supported command s

(continued)

Command code Supported Command name

Y Verify error recov ery page (07h) Y Caching parameters page (08h)

Y Control mode page (0Ah) N Notch and partition page (0Ch) N Xor control page (10h)

Y Fibre Channel Interface control page (19h)

Y Power control page (1Ah)

Y Information exceptions control page (1Ch)

1Bh Y Start unit/stop unit (spindle ceases to rotate) 1Ch Y Receive diagnostic results

Y Supported diagnostics pages (00h)

Y Translate page (40h)

Y Enclosure services page

1Dh Y Send diagnostics page

Y Supported diagnostics page (00h)

Y Translate page (40h)

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 Verify

Y Disable page out

Y Byte check N Relative address

30h N Search d ata high 31h N Search d ata equal 32h N Search d ata 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

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Barracuda 36FC Product Manual, Rev. B 43

T a b le 14: Supported command s

(continued)

Command code Supported Command name

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 40h Y Change definition 41h Y Write same

N PBdata

NLBdata 42-4Bh N Not used 4Ch Y Log Select

N DU bit

YDS bit

YTSD bit

NETC bit

NTMC bit

NLP bit 4Dh Y Log Sense

Y Cache statistics page (37h)

Y Non-medium error page (06h)

Y Pages supported list (00h)

Y Power-on time page (3Eh)

Y Read error counter page (03h)

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

Y S.M.A.R.T. attribute log page (30h)

Y Verify error counter page (05h )

Y Write error counter page (02h) 4E-4Fh N Not used 50h N XD wri te 51h N XP write 52h N XD read 53-54h N Not used 55h Y Mode Select (10) [3]

Y Capacity programming 56h Y Reserved (10)

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44 Barracuda 36FC Product Manual, Rev. B

T a b le 14: Supported command s

Command code Supported Command name

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

(continued)

Y 3rd party reserve

N Extent r eservation

[1] Barracuda 36FC drives can format to any multiple of four bytes per logical block in the range 512 to 4,096

bytes.

Warning.

[2]

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

drive inoperable.

[3] Reference Mode Sense command 1Ah for mode pages supported.

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Barracuda 36FC Product Manual, Rev. B 45

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 02** 22 8B 00 PP 0A 53 45 41 47 41 54 45 20 Vendor ID 16-31 [53 54 31 33 36 34 37 35 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 31* *Copyright 112-127 39* 39* 39* 20 53 65 61 67 61 74 65 20 41 6C 6C 20 notice 128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20

* 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 version number. S# Eight ASCII digits representing the eight digits of the product serial number. [ ] Bytes 16 through 25 reflect drive model (ST136475FC shown).

Barracuda 36FC

inquiry data (ST136475FC data shown)

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 required un ique saved values are stored i nto the saved values storage location on the me dia prior to shippin g the drive. Some dr ives may have unique fir m ware 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 shipping.

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, or Bus Device Reset message.

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46 Barracuda 36FC Product Manual, Rev. B

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 one (1) indicates the value can be changed. A zero (0) in dicates the value is not changeable. For example, in Table 16 , refer to Mode page 81, in the row entitled “CHG.” These are hex numbers representing the ch ang eable 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 changea ble. Note also th at bytes 06, 07, and 09 are not changeable, because those fi eld s are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones, 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.

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Barracuda 36FC Product Manual, Rev. B 47

Table 16: Mode Sense data default and changeable values for ST136475FC drives

ST136475FC 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

A7 00 10 08 04 3D 67 20 00 00 02 00

Header

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

DEF

81 0A C0 0B E8 00 00 00 0F 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 A6 00 00 00 00

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

DEF 83 16 2A F8 00 00 00 10 00 00 01 30 02 00 00 01 00 30 00 34 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 2D C9 14 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 27 00 00

CHG

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

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

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

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

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

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

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

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 7F 01 00 00 00

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

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

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

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

DEF 80 02 00 00

CHG 80 02 37 40

<--- Read capacity data --->

04 3D 67 1F 00 00 02 00

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48 Barracuda 36FC Product Manual, Rev. B

9.4 Miscellaneous operating features and conditions

Table 17 lists var ious features and con ditio ns. A “Y” in the support colum n indi cates the feature or con dition 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: Miscella neo us 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 YACA active Y ACA active, faulted initiator

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Barracuda 36FC Product Manual, Rev. B 49

9.5 FC-AL physical interface

Figure 12 shows the locatio n of the J1 Fibre Channel s in gle conne ction attachment (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 loop together or with other compa tible FC-AL devices. A maximum of 127 devices m ay have addresses; however, one of th e addresses is rese rved 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 functi onal because they would not be able to obtain valid addresses.

Port bypass circuits (P BCs) allow devices to be ins er ted into unpopula ted locat ions or removed from the loop with loop operation re covery after a bri ef interruptio n. These PBCs are located externa l 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. P ort bypa ss circuit physical interconnect

Select

SerialInSerial

Out

Drive N

Drive N+1

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50 Barracuda 36FC Product Manual, Rev. B

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

.079

(2 mm)

Figure 15. J6 connector dimensions

.787

(19.99 mm)

.079 (2 mm)

.708

(17.983 mm)

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Barracuda 36FC Product Manual, Rev. B 51

9.5.3 Electrical description

Fibre Channel drives use the FC-SCA connector for:

• DC power

• FC-AL interface

• Drive select (device identification)

• Option selection

• Enclosure Services interface

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

9.5.4 Pin descriptions

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

Table 19: FC-SCA pin descriptions

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 po rt 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* Reserved NC 37 SEL_1 TTL input/output 18* Reserved NC 38 SEL_0 TTL input/output 19* 5 Volts 39 Reserved NC 20 * 5 Volts 40 5 Volts c harge

[9.3.1]

26 Ground

*Short pins in mating backpanel connector. [1] This pin may be connected t o external logic to detect the presenc e of the drive. The dri ve connects this

pin to the common ground.

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52 Barracuda 36FC Product Manual, Rev. B

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

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Barracuda 36FC Product Manual, Rev. B 53

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 Bypass Port A (– EN BYP Port A ) and – Enable Bypass Port B (– EN BYP Port B) signals control the port bypass circuits (PBC) located external to the disc drive. The PBC allows a loop to remain functional in the event of a drive failure or removal. When these signal s are ac tive, low, the PBC bypasses the drive on the associated por t. When an Enable Bypass s ignal is active, the correspo nding Port Bypass LED signal in c onnector J1 is dri ven low by the disc drive. A pull down resistor, 1K, located with the PBC s hould 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 primiti ve 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 D C power on. 2 High Low Motor spins up only when SCSI Start command is received. 3 Low High M ot or sp ins up a fter a delay of 12 sec ond s ti mes the modulo 8 va lue 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 22 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 plug. T he dr ives does not provid e pull up res istors on th ese lines. The backpanel is required to provide high and low inputs to th e SEL_ID lines per the spe cifi cation s in table 23 on page 56 .

Note.

Table 22 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_PA 00 which is not valid for an NL_Port, so is not included in the table. Also, SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that physical addresses are not 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 descrip tion of ES I operation.

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54 Barracuda 36FC Product Manual, Rev. B

9.5.11.1 Parallel Enclosure Services Interface (ESI)

The parallel ESI l ine 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.

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Barracuda 36FC Product Manual, Rev. B 55

T a b le 22: 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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56 Barracuda 36FC Product Manual, Rev. B

9.6 Signal characteristics

This section desc ribes the electrical signal cha rac ter i sti c s o f the drive’s input and output signals. See Table 19 on page 51 for signal type and signal name information.

9.6.1 TTL input characteristics

Table 23 provides the TTL characteristics.

T a b le 23: 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 (-Par all el 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

< V

< .45V IOL < 2.4mA

< 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 24 for the output characteristics of the LED drive signals.

T a b l e 24: 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 T able 25. 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 25: Differential PECL output characteristics

Description Parameter Notes

Serial output voltage swing 300 < V

< 650 mV Centered at 1.32V

out

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Barracuda 36FC Product Manual, Rev. B 57

Figure 17 provides the data output valid eye diagram relative to the bit cell time.

941 ps

Vout (mv)

800 ps

Figure 17. Transmit eye diagram

9.6.4 Differential PECL input

The serial PECL input signal voltage characteristics are provided in Table 26.

Table 26: Differential PECL input characteristics

Description Parameter Notes

Serial input voltage swing 200mV < V

< 1300 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.

941 ps

Vin (mv)

659 ps

376 ps

Figure 18. Receive eye diagram

Typical Minimum

Page 68

Page 69

Barracuda 36FC Product Manual, Rev. B 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 disc and tape drive

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.

Page 70

60 Barracuda 36FC Product Manual, Rev. B

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

Presales Support

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; Tape and Server Appliance: +1-405-936-1683

SeaFAX SeaTDD SeaBOARD

1-800-SEAGATE

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

Warranty Service

Call Center Toll-free Direct dial FAX / Internet

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

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

http://www.memofix.com

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

http://www.adtech1.com

Brazil

MA Informatica* — +55-21-516-6649 +55-21-223-3156

e-mail: sgt_cso@gbl.com.br

*Authorized Service Centers

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Barracuda 36FC Product Manual, Rev. B 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 Middle 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

Page 72

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Barracuda 36FC Product Manual, Rev. B 63

Index

Numerics

12 volt

pins 52 3rd party reserve command 44 5 volt pins 52

Abort Sequence (ABTS) 35 abort task set function 35 AC coupling 52 AC power requirements 19 ACA active status 48 ACA active, faulted initiator status 48 Accept (ACC) 35 acoustics 26 active LED Out signal 52 Actual retry count bytes command 41 actuator 6

assembly design 5 adaptive caching 48 Address Discovery (ADISC) 35 addresses 49 air cleanliness 26 air flow 22, 33

illustrated 33 air inlet 33 Alternate credit model 36, 39 altitude 24 ambient 23 ambient temperature 22, 32 ANSI documents

fibre channel 4

SCSI 4 arbitrated loop physical address (AL_PA) 31 arbitration 31 asynchronous event notification 48 audible noise 3 auto write and read reallocation

programmable 6 automatic contingent allegiance 48 average idle current 19 average rotational latency 9

backpanel 51 backplane 53 basic link service frames 35 Basic_Accept (BA_ ACC) 35 Basic_Reject (BA_RJT) 35 BB 36, 39 BB-Credit 36, 39 Block format command 41 buffer

data 6

space 11 busy status 48 bypass circuit 15 Byte check command 42 Bytes from Index command 41 bytes per surface 9 bytes per track 9

cache operation 11 cache segments 11 Cache statistics page 43 Caching parameters page (08h) command 42 caching write data 11 Canadian Department of Communications 3 capacity

formatted 7

unformatted 7, 9 Capacity programming 43 case temperature 22 CF 36, 39 Change definition command 43 character sync 15 charge pins 52 check condition status 48 Class 3 parameters 36, 39 class B limit 3 Class valid 36, 39 clear ACA function 35 clear task set function 35 commands supported 41 Common features 36, 39 Compare command 42 Concurrent sequences 36 condensation 24 condition met/good status 48 connector

illustrated 50

requirements 50 continuous vibration 26 Continuously increasing offset 36, 39 Control mode page (0Ah) command 42 cooling 32 Copy and verify command 42 Copy command 41 CRC 15

error 13 CS 36 Current profiles 20 customer service 17

data block size

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

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64 Barracuda 36FC Product Manual, Rev. B

read/write 9

data rate

internal 9 data transfer rate 10 data valid eye 57 Date code page command 41 DC power 51

requirements 19 DCRT bit 41 defect and error management 29 deferred error handling 48 description 5 Device behavior page 41 device selection IDs 31 devices 31 differential PECL input 57 dimensions 27 Disable page out command 42 disc rotation speed 9 Disconnect/reconnect control (page 02h) command

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

43 Download microcode with offsets mode (6) 43 DPRY bit 41 drive 26 drive active LED connection 31 drive characteristics 9 drive fault LED connection 31 drive ID 31 drive ID/option select headers 31 drive mounting 27, 33 drive orientation 32 drive select 51 driver signals 56 drivers and receivers 6 DS bit 43 DSP bit 41 DU bit 43 dual port support 40

electrical

description of connector 51 signal characteristics 56

specifications 19 electromagnetic compatibility 3 electromagnetic interference (EMI) 13 electromagnetic susceptibility 26 EMI 13 EMI requirements 3 enable bypass

port A 53

port B 53

signal 53

state 15 Enclosure Services interface 51 Enclosure services page command 42 environment 33 environmental

interference 13

limits 22

requirements 13 environmental control 26 error

detection mechanisms, FC 15

management 29

rates 13 error correction code

96-bit Reed-Solomon 6 Error recovery page (01h) command 41 ETC bit 43 extended link service

frames 35

reply frames 35 Extended sense command 41 Extent reservation command 44

fabric 39 Fabric Address Notification (FAN) 35 Fabric Login (FLOGI) 35 FAN 39 fault LED out signal 52 FC-AL

document 4

interface 31, 51

options supported 40

physical interface 49

SCA device connector, illustrated 50

selective reset 48 FCC rules and regulations 3 FCP

for SCSI, document 4

response codes 35

task management functions 35 FC-PH document 4 features 6

interface 35 Fibre Channel documents 4 Fibre Channel Interface control page 42 Fibre Channel Interface Manual 1, 3, 4 Fibre Channel Services 35 Field pointer bytes command 41 firmware 6

corruption 44 Firmware download option command 43 Firmware numbers page command 41 flawed sector reallocation 6 FLOGI

received on Port A 38

received on Port B 38

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Barracuda 36FC Product Manual, Rev. B 65

Force unit access command 42 form factor 6 format 31 Format command execution time 9 Format page (03h) command 41 Format unit command 41 FS 36, 37, 39 function

complete, code 00 35 not supported, code 05 35 reject, code 04 35

Good status 48 gradient 23, 24 ground shift noise 52 grounding 34

hard assigned arbitrated loop phys ic al add re ss

(AL_PA) 31

HDA 23, 33, 34

temperature 23 head and disc assembly (HDA) 5 head and disc assembly. See HDA heads

read/write data 9 heat removal 33 heat source 33 host equipment 34 hot plugging the drive 15 humidity 24 humidity limits 22

IC 36 ID and configuration options 6 IMMED bit 41 Implemented operating def. page command 41 Information exceptions control page (1Ch) command

42 Initiator control 36 Inquiry command 41 inquiry data 45 installation 31

guide 4

interface 31

commands supported 41 description 49 error rate 13 errors 13 illustrated 49 physical 49 requirements 35

interleave 6

minimum 1 0

intermediate/condition met/good status 48 intermediate/good status 48 Intermix 36, 39 internal data rate 9 internal defects/errors 29 internal drive characteristics 9 IP bit 41

J1 connector 31 J6 connector 31, 32 Jumper settings page command 41 jumpers 31

latency

average rotational 9, 10 LBdata 43 LED driver signals 56 Link Service Reject (LS_RJT) 35 link services supported 35 Lock-unlock-cache command 42 Log select command 43 Log sense command 43 logic power 52 logical block address 11 logical block realloc ati on scheme 6 logical block size 6, 10 logical segments 11 Logout (LOGO) 35 loop 49, 53

disruption 15

initialization 31 loop position

FC-AL options 40 loop position report

FC-AL options 40 LP bit 43 LS_RJT 36, 39 LSI circuitry 6

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

Adaptive caching 48

Asynchronous event notification 48

Automatic contingent allegiance 48

Deferred error handling 48

FC-AL selective reset 48

Parameter rounding 48

Queue tagging 48

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66 Barracuda 36FC Product Manual, Rev. B

Reporting actual retry count 48 Segmented caching 48 SMP = 1 in Mode Select command 48 Synchronized (locked) spindle operation 48 Zero latency read 48

miscellaneous sta tus suppor t

ACA active 48 ACA active, faulted initiator 48 Busy 48 Check condition 48 Condition met/good 48 Good 48 Intermediate/condition met/good 48 Intermediate/good 48 Reservation conflict 48

Task set full 48 miscorrected media data 13 Mode select

(10) command 43

command 41 Mode sense

(10) command 44

command 41

data, table 45, 47 monitoring state 15 motor start

controls 53

option 10 mounting 33

holes 33

orientations 32 mounting configuration 27 mounting configuration dimensions 27 MTBF 13, 14, 22

defined 14

N_Port Login (PLOGI) 35

payload 36

payload values 37 NN 36, 39 Node Name 39 Node name 36 noise

audible 3 noise immunity 20 Non-medium error page 43 non-operating 24, 26

temperature 23 non-operating vibration 26 Notch and partition page 42

office environment 26 old port state

FC-AL options 40 OPEN Full Duplex

FC-AL options 40

OPEN half duplex

FC-AL options 40 Open sequences per exchange 36 operating 24, 26 option configurations 31 option selection 51 options 7, 40 orientation 24 OS 36 out-of-plane distortion 33 overhead time

for head switch 10

for one track cylinder switch 10

P_LOGI

received on Port A 37

received on Port B 37 package size 25 packaged 25 Pages supported list 43 parameter rounding 48 pass-through state 15 PBC 49, 53 PBdata 43 PCB

temperature 23 PCBA 34 peak bits per inch 9 peak operating current 19 peak-to-peak measurements 20 PECL input 57 performance charact eris tic s

detailed 9

general 10 performance degradation 24 performance highligh ts 6 physical damage 26 physical interface 49

description 49 Physical sector format command 41 physical specifications 19 PI 37, 38 pin descriptions 51 PN 36, 39 port bypass circuit 15, 49, 53 port bypass LED connection 31 Port DISCovery 36 Port Discovery (PDISC) 35 port identifier field 37, 38 port login 36

accept 37 Port Name 39 Port name (initiator’s) 36 power 52

dissipation 22

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Barracuda 36FC Product Manual, Rev. B 67

requirements, AC 19 requirements, DC 19

sequencing 20 Power control page (1Ah) command 42 power distribution 3 Power-on time page 43 Prefetch command 42 prefetch/multi-segmented cache control 10 preventive maintenance 13 printed circuit board (PCB)

cooling 32 private loop

FC-AL options 40 Proc Assc 36 Process Accept (ACC) 37 Process Login (PRLI) 35, 37 Process Login Accept (ACC) payload 37 process login payload data 37 Process Logout (PRLO) 35 public loop

FC-AL options 40 pull down resistor 53

queue tagging 48

radio interference regulations 3 Random relative offset 36, 39 RCD bit 11 Read buffer command 43 Read capacity command 42 Read combined header and data mode (0) 43 Read command 41 Read data mode (2) 43 Read defect data command 42 Read descriptor mode (3) 43 Read error counter page 43 read error rates 13 Read extended command 42 Read Link Status (RLS) 35 Read long command 43 read/write data heads 9 Reassign blocks command 41 Receive buffer field size 36, 39 receive buffer field size 37 Receive diagnostic results command 42 receive eye

diagram 57 receivers 52 recommended mounting 25 recovered media data 13 reference

documents 4 Regenerate command 44 Register FC-4 Types (RFT_ID) 35 Relative address command 42

relative humidity 24 Release command 41 Released (10) command 44 reliability 6

and service 14

specifications 13 repair and return information 17 reporting actual retry count 48 Request sense command 41 reservation conflict status 48 Reserve command 41 Reserved (10) command 43 resonance 24 return information 17 Rezero unit command 41 Rigid disc drive geometry page

command 41 rotation speed 9 running disparity 15

S.M.A.R.T. attribute log page 43 S.M.A.R.T. status log page 43 safety 3 SCA part numbers 50 SCSI interface

commands supported 41 Search data

equal command 42

high command 42

low command 42 Seek command 41 seek error

defined 13

rate 13 Seek extended command 42 seek performance characteristics 9 seek time

average typical 9

full stroke typical 9

single track typical 9 segmented caching 48 SEL ID 31

lines 53

standard feature 6 Self-Monitoring Analysis and Reporting Technology

7, 16 Send diagnostics page co mma nd 42 Sequential delivery 36, 39 service

life 13, 15 philosophy 15

tools 15 Service Options 39 Service options 36 Set limits command 42 shielding 3

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68 Barracuda 36FC Product Manual, Rev. B

shipping 17 shipping container 23 shock 24

and vibration 24 shock mount 34 signal

characteristics 56

LED driver 56 single-unit shipping pack kit 7 SMART 7, 16 SMP = 1 in Mode Select command 48 SO 36, 39 spindle brake 6 Stacked connection req. 36, 39 standards 3 Start unit/stop unit command 42 start/stop time 10 STPF bit 41 support services 59 Supported diagnostics pages command 42 surface stiffness

allowable for non-flat surface 33 switches 31 Synchronize cache comma nd 42 synchronized spind le

operation 48 system chassis 34

tracks per surface 9 Translate page command 42 transmit eye diagram 57 transmitters 52 transporting the drive 17 TSD bit 43 TTL input characteristics 56

UI 37, 38 unique identifier 37, 38 Unit attention page (00h) command 41 Unit serial number page command 41 unrecoverable

error 13 write error, defined 13

unrecovered media data 13

Valid version level 36, 39 Verify command 42 Verify error counter page 43 Verify error recovery page (07h) command 42 vibration 24, 26 Vital product data page command 41 VS 41

target reset function 35 task management functions 35

Abort task set 35

Clear ACA 35

Clear task set 35

Target reset 35

terminate task 35 task management response codes 35

Function complete 00 35

Function not supported 05 35

Function reject 04 35 task set full status 48 technical support services 59 temperature 22, 33

ambient 22

case 22

gradient 22

limits 22

non-operating 23

PCB and HDA 23

regulation 3

See also cooling terminate task function 35 terminators 31 Test unit ready command 41 Third-party Process Logout (TRPLO) 35 TMC bit 43 tracks per inch 9

warranty 17 word sync 15 Write and verify command 42 Write buffer command 43 Write combined header and data mode (0) 43 Write command 41 Write data mode (2) 43 Write error counter page 43 write errors 13 Write extended command 42 Write long command 43 Write same command 43

XD read 43 XD write 43 XD write extended command 44 XID reassign 36 Xor control page 42 XP write 43

zero latency read 48 zone bit recording (ZBR) 6

Page 79

Page 80

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

Publication Number: 77767543, Rev. B, Printed in USA

Seagate Barracuda ST136475FC Product Manual

Specifications and Main Features

Frequently Asked Questions

User Manual