seagate ST118273FC Installation guide

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Barracuda 18FC Disc Drive

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ST118273FC

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Product Manual, Volume 1

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Barracuda 18FC Disc Drive

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ST118273FC

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Product Manual, Volume 1

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Publication number: 77767524, Rev. B

Seagate , Seagate Technology, and the Seagate logo are registered trademarks of Seagate T echnology, Inc. Barracuda, S eaFAX, SeaFONE, SeaB OARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, Inc. or one of its subsidiaries. All other trademarks or registered trademarks are the property of their respective owners.

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

Seagate Technology, Inc.

Printed in the United States of America

Revision status summary sheet

Revision Date Writer/Engineer Sheets Affected

A 08/04/98 L. Newman/R. Metzner 1/1, v thru viii, 1 thru 64. B 11/24/98 L. Newman/R. Metzner 52.

Barracud a 18FC Pr oduct Manual, Rev. B v

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

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

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

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

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

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

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

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

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

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

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

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

3.6 Factory-installed accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.7 Factory-installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.8 User-installed accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

5.1.4 Seek errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.2 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.3 Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5

5.3.1 Mean time between failure (MTBF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.2 Field failure rate vs time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.3 Preve ntive maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.4 Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.5 Service philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.6 Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.7 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.3.8 Hot plugging the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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

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

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

6.2.1 Conduct ed noise immu nit y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.2 Power seq uencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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

6.3 Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.4 Environmental limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4.3 Effective altitude (sea level reference) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

vi Barracuda 18FC Produ c t Ma n ua l , Rev . B

6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

6.5 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

6.6 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

7.0 Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

7.1 Drive internal defects/errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

7.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

7.3 FC-AL system errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

8.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

8.1 Drive ID/option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

8.2 LED connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

8.2.1 J6 connector requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

8.3 Drive orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

8.4 Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

8.4.1 Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

8.5 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

8.6 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1

9.0 Interface requiremen ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9.1 FC-AL features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9.1.1 Fibre Channel link service frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9.1.2 Fibre Channel task m anagem ent functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9.1.3 Fibre Channel task m anagem ent respo nses . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

9.1.4 Fibre Channel port login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

9.1.5 Fibre Channel port login accept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.6 Fibre Channel Process Logi n (PRLI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.7 Fibre Channel Process Accep t (ACC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

9.1.8 Fibre Channel fabric login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

9.1.9 Fibre Channel fabric accept login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

9.1.10 Fibre Channel Arbitrated Loop options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

9.2 Dual port support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

9.3 SCSI commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

9.3.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.3.2 Mode Sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

9.4 Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

9.5 FC-AL physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

9.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

9.5.2 Connector requirem ents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

9.5.3 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

9.5.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

9.5.5 FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.6 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.7 Fault LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.8 Active LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

9.5.9 Enable port bypa ss signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5.10 Motor start controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.5.11 SEL_6 through SEL_0 ID lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

9.6 Signal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.6.1 TTL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.6.2 LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.6.3 Differential PECL output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

9.6.4 Differentia l PECL input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

10.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Barracud a 18FC Pr oduct Manual, Rev. B vii

List of Figures

Figure 1. Barracuda 1 8FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Barracuda 1 8FC disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Typical Barracuda 18FC drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 5. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 6. LED indicator connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 7. Air flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 8. PCBA temperature measurement locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 9. HDA case temperature measurement location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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

Figure 11. Port bypass circuit physical interconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 12. FC-AL SCA device connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 13. J6 connector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 14. FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 15. Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 16. Receive eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Barracud a 18FC Pr oduct Manual, Rev. B 1

1.0 Scope

This manual describes Seagate® BarracudaTM 18FC (Fibre Channel) disc drives. Barracuda 18FC drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifica-

tions to the extent described in this manual. The describes the general Fibre Channel Arbitrated Loop characteri stics of this and other Seagate Fibre Channel drives.

Fibre Channel Interface Manual

(part number 77767496)

Figure 1.

Barracuda 18FC

family disc drive

Barracud a 18FC Pr oduct 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 its hos t equipment to provide adeq uate power and environment in order to a chieve optimum performance and compliance with applicable industry a nd governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In par ticular, the drive must be securely m ount ed in o rder to guarante e th e spec ified pe rformanc e characteristics. Mounting by bottom holes must meet the requirements of Section 8.5.

2.1 Standards

The Barracuda 9FC family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate

The Barracuda 18FC dis c dri ve is a UL recognized component per UL1 950, CS A c ertified to CAN/CS A C22. 2 No. 950-95, and VDE certified to VDE 0805 and EN60950.

2.1.1 Electromagnetic compatibility

The drive, as delivered, is designed f or system integration and installation into a suitable enclosure prior to use. As such the drive is supplied as a subassembly and is not subjec t to Subpart B of Part 15 of the FCC Rules and Regulations nor the Radio Interference Regulations of the Canadian Department of Communications.

The design characteristics of the drive serve to minimize radiation when installed in an enclosure that provides reasonable shielding. As such, the drive is capable of meeting the Class B limits of the FCC Rules and Regulations of the Canadian Department of Communications when properly packaged. However, it is the user’s responsibility to assure that the drive meets the appropriate EMI requirements in their system. Shielded I/O cables may be required if the enclosure do es not provide adeq uate shielding. If the I /O cables are extern al to the enclosure, shielded cables should be used, with the shields grounded to the enclosure and to the host controller.

Fibre Channel Interface Manual

, part number 77767496.

2.1.1.1 Electromagnetic susceptibility

As a component assem bly, the drive is not required to me et any suscep tibility perform ance requi rements. It is the responsibility of those integrating the dri ve within their systems to perform t hose t ests req uired a nd des i gn their system to ensure that equipm ent operating in the same system as the drive or external to the system does not adversely affect the performance of the dr ive. See Section 5.1.1 on page 13 and Table 1, DC power requirements, on page 19.

2.2 Electromagnetic compliance

Seagate uses an independ ent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include:

• 486, Pentium, and PowerPC 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 integrator shall confirm EMC compliance and provide the appropriate marking for their product.

Electromagnetic compliance for the European Union

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

4 Barracuda 18FC Pr oduct Manua l , Rev . B

Australian C-Ti ck

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

2.3 Reference documents

Barracuda 18FC Installation Guide

Seagate part number: 77767525

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 X3.303.199X 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 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) X3.270-199X (SCSI-3) Architecture Model X3.XXX-199 X (SCSI-3) En cl o s u re Services

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

Barracud a 18FC Pr oduct Manual, Rev. B 5

3.0 General description

Barracuda 18FC drives are random access storage devices designed to suppor t the Fibre Channel Arbitrated Loop (FC-AL) and SCSI Fibre Channel Protocol as de scribed in the A NSI specifications, this docum ent, and

Fibre Channel Interface Manual

the istics of this drive. ST118273FC drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.

You can view the Fibre Channel interface simply as a transport vehicle for the supported command set (ST118273FC drives use the S CSI command set). In fact, the Fibre C hannel interface is unaware of the c ontent or meaning of the information being transported. It simply packs the SCSI commands in frames, transports them to the appropriate devices, and provides error checking to ensure that the information reaches its destination accurately. Refer to the documents referenced in Section 2.3 if you require additional information about the Fibre Channel interface, FC-AL topology, or the SCSI fibre channel protocol.

The head and disc as sembly (HDA) is environmentally sealed at the factory. Air recirculates within the HDA through a non-replaceable filter to maintain a contamination-free HDA environment.

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

(part number 7776 7496) which descr ibes the general interface character-

Figure 2. Barracuda 18FC disc drive

Barracuda 18FC

sibility of destroying or degrading data by landing in the data zone. The heads automatically go to the landing zone when power is removed from the drive.

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

The drives also use a high-performance actuator assembly design that provides excellent performance with minimum power dissipation.

drives use a dedicated landi ng zone at the innermost radius of the m edia to eliminate the pos-

6 Barracuda 18FC Pr oduct Manua l , Rev . B

3.1 Standard features

Barrac ud a 18 F C

drives have the following standard features:

• Integrated dual port FC-AL controller

• Concurrent dual port transfers

• Support for FC arbitrated loop and private loop attachment

• Differential copper FC drivers and receivers

• Downloadable firmware using the FC-AL interface

• Drive selection ID and configuration options are set on the FC-AL backpanel or through interface commands. Jumpers are not used on the drive.

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

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

• Selectable frame sizes from 128 to 2,112 bytes

• Industry standard 3.5-inch half height 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

• 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

• Supports SC SI enclosure services via interface connector

• Supports up to 32 initiators

• Reallocation of defects on command (Port Format)

• Fibre Channel interface transports SCSI protocol

3.2 Media description

The media used on the drive has a diameter of approximately 95 mm (approximately 3.7 inches). The alum inum substrate is coated with a thin film ma gnetic material, overcoated with a proprietary p rotective 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

Barracud a 18FC Pr oduct Manual, Rev. B 7

3.4 Reliability

• 1,000,000 hour MTBF

• LSI circuitry

• Balanced low mass rotary voice coil actuator

• Self-Monitoring Analysis and Reporting Tec hnol ogy (S.M.A.R.T.)

• Dithering

3.5 Unformatted a n d formatted capacities

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 standard OEM model capacities are listed below .

Formatted Unformatted

ST118273FC 18.21 Gbytes 23.14 Gbytes

Users having the necessary equipment may modify the data block size before issuing a format command and obtain different formatted capacities than those listed. The

ST118273FC

drives use a zone sparing scheme. The

drives are divided into frequency zones with a variable number of spares in each zone.

3.6 Factory-installed accessories

OEM standard drives are shipped with the

Barracuda 18FC Installation Guide

(part number 77767525).

3.7 Factory-installed options

You may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping:

• Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit damage. Units shipped individually require additional protection as provided by the single unit shipping pack. Users planning single unit distribution should specify this option.

3.8 User-installed accessories

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

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

Barracud a 18FC Pr oduct Manual, Rev. B 9

4.0 Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of ST118273FC drives.

4.1 Internal drive characteristics

ST118273FC

Drive capacity 23.14 .........................Gbytes (unformatted)

18.21 .........................Gbytes (formatted with 512-byte logical blocks)

Read/write data heads 20

Bytes per track 155,000 .........................Bytes (average, unformatted)

Bytes per surface 1,165 .........................Mbytes (unformatted)

Cylinders/ tracks per su rface 7,501 .............. ...........Tracks (user accessible)

Tracks per inch 8,250 .........................TPI

Internal data rate 120-190 ............ .............Mbits/sec (variable with zone)

Disc rotation speed 7,200 .........................rpm (± 0.5%)

Avg ro tat ional latency 4.17 .... .......... ...........msec

4.2 Seek performance characteristics

See section 9.5, “FC-AL physical interface” on page 4 6 and the

Fibre Channel Interface Manual

(part number

77767496) for additional timing details.

4.2.1 Access time

Including controller overhead Read Write

Av erage Typical

Maximum

Single track Typical

Maximum

Full stroke Typical

Maximum

3,4

7.9 8.7

9.3 9.6

1.1 1.4

1.3 1.6 16 18

18.5 20

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 = contro ller overhead + average seek time.

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

5. Maximum times are specified over the worst case conditions of temperature, voltage margins, and drive orientation.

When comparing specified access ti m es, care should be taken to distinguish between typical access times and maximum access t ime s. The best com paris on is obt ained by s ystem benchm ark t est s cond uct ed under i denti cal co ndi tions . Maximum times do not include error recovery.

1, 2

(msec)

4.2.2 Format command execution time for ≥ 512-byte sectors

ST118273FC

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

10 Barracuda 18FC Product Manual, Rev . B

4.2.3 General performance characteristics

ST118273FC

Minimum sector interleave 1 to 1

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

Minimum 15.2 MBytes/sec Average 20.4 MBytes/sec Maximum 23.7 MBytes/sec

Data buffer transfer rate to/from disc media (<1 track)*

Minimum 10.8 MBytes/sec Average 16.0 MBytes/sec Maximum 17.0 MBytes/sec

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

(dual port = 212 Mbytes/sec *)

Logical block size s

Default i s 512-byte data blocks Variable 512 to 4,096 bytes per sector in even number increments

Read/write consecu ti ve sectors on a track Overhead time for head switch in sequential mode Overhead time for one track cylinder switch in sequential mode Av erage rotational latency

*Assumes no errors and no rel ocated logical blocks.

Yes

1.2 msec

1.2 msec (typical)

4.17 msec

4.3 S tar t/st op 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. During the start sequen ce, the drive responds to some commands over the FC-AL interface. Stop time is less than 31 seconds (maximum) from removal of DC power.

If the Motor Start option is enabled, the internal controller accepts the commands listed in the

Interface Manual

less than 3 seconds aft er DC power has been applied. A fter the Motor Star t command has

Fibre Channel

been received, the drive becomes ready for normal operations within 13 seconds (excluding the error recovery procedure). The Motor Start command can also be used to comman d 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/multi-segmented cache algorithm that in many cases can en hance system performance. To sel ec t this feature the host s ends the Mode Selec t comm and with t he proper values in the applicable bytes in page 08h. Default is prefetch and read cache enabled.

If the Prefetch feature is enabled, data in contiguous logical blocks on the disc i mmediately beyond that which was requested by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subs eque nt Read commands tha t reques t t hos e lo gical blocks (this is t rue even if cache operation is disabled). To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch.

Since data that is prefetched replaces data already in some buffer segments, the host can limit the amount of prefetch data to optimize system performance. The Max Prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11).

Barracud a 18FC Pr oduct Manual, Rev. B 11

4.5 Cache operation Note. Refer to the

Of the 1,024 Kbytes physical buffer space in the drive, 967.5 Kbytes can be u sed as a cache. The cac he can be divided into logical segments 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 cache. If the cache is enabled (see RCD bit in the command is retriev ed from the cache, if possible, before any disc access is initiated. Data in contiguous logical blocks immediately beyond that requested by the Read command c an b e retr ieved and stored in the cac he for immediate transfer to the initiator on subsequent read commands. This is referred to as the prefetch operation. Since data that is prefetched may replace data already in the cach e segm ent , an i nit iator can l im it the am ount of prefetch data to optimize system performance. The drive never prefetches more sectors than the number specified in bytes 8 and 9 of M ode page 08h. If t he cache is not enabl ed, 967.5 Kbytes of the buffer are used as a circular buffer for read/writes, with no prefetch operation and no segmented cache operation.

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 cache:

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

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

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

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

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

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

Fibre Channel Interface Manual

for more detail concerning the cache bits.

), data requested by the host with a read

Case B—read comman d is recei ved and the fi rst logical block addres s re queste d is n ot in any segm ent of the cache.

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

from there to the initiator in accordance with t he “buffer-full” ratio specification given in Mode Select Disconnect/Reconnect parameters, page 02h.

2. The drive prefetches additional logical blocks contiguous to those transferred in Case A, step 2 above and

stores th em in the segm ent. The drive s tops filling the segment wh en the maximum prefetch value has been transferred.

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

Each cache segment is actually a self-contained circul ar buffer whose length is an integer number of logical blocks. The wrap-around capability of the individual segments greatly enhances the cache’s overall performance, allowing a wide range of user-selectable configurations. The drive suppor ts operation of any integer number of segments f rom 1 to 16. Divide th e 9 67.5 K bytes in the buffer by the number of segments t o get the segment size. Default is 3 segments.

Note. The size of each segment is not reported by Mode Sense c ommand page 08h, bytes 14 and 15. The

value 0XFFFF is always reported regardl es s of the ac tual size of the segment. Sending a size s pecification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. If the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable parameter.

4.5.1 Caching write data

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

Write caching is enabled independently of read caching. Write caching is enabled by default. To disable the write cache, use the Write Caching Enable (WCE) bit.

12 Barracuda 18FC Product Manual, Rev . B

For write caching, the same buffer space and segmentation is used as set up for read functions. When a write command is issued , the cache is first checked to see if a ny logical blocks that are to be written are al ready stored in the cache from a previous read or wr ite command. If there are, the respective cache segm ents are cleared. The new data is cached for subsequent read commands.

If a 10-byte CDB Write command (2Ah) is issued with the data page out (DPO) bit set to 1, no write data is cached, but the cache segm ents are s till checked and cleared, if need be, for any logical blocks that are bei ng written.

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

Barracud a 18FC Pr oduct Manual, Rev. B 13

5.0 Reliability specifications

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

Seek error rate: Recoverable media error rate

Less than 10 errors in 10 Less than 10 errors in 10

(using OEM default settings): Unrecovered media data: Miscorrected media data: Interface error rate:

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 53. MTBF: 1,000,000 hours Service life: 5 years Preventive maintenance: None required

5.1 Error rates

The erro r rates stated in th is manual assume the following:

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

• The drive has been formatted with the FC-AL format commands.

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

seeks

bits transferred

bits transferred with minimum receive eye.

bits transferred with typical receive eye.

5.1.1 Environmental interference

When evaluating systems operation under c onditions of electromagn etic interference (EMI), the performance of the drive within the system is c onsid ered acceptable if the drive doe s not gene rate a n unrecoverable condition.

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

• is not detected and corrected by the drive itself, or

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

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

5.1.2 Interface errors

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

5.1.3 Write erro rs

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

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

5.1.4 Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. There must be no

more than ten recoverable seek errors in 10

physical seek operations. After detecting an initial seek error, the drive automatically reseeks to t he addressed track up to three t imes. If a reseek is succes sful, the Extended Sense reports a seek positioni ng error (15h), no seek com ple te error (02h), or track follow error (09h), and the sense key reports a recovered error (01h). If all three reseeks fail, a seek positioning error (15h) is reported

14 Barracuda 18FC Product Manual, Rev . B

with a Medium (03h) or Hardware error (04 h) repor ted in the Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations.

5.2 S.M.A.R.T.

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

Note. The drive’s firmware monitors specific a ttributes for degradation over time but can’t predict in stanta-

neous drive failures.

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

Controling S.M.A.R.T.

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

You can measure off-line at tributes and force the drive to save the data by using the RTZ 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. attribute data is saved to the disc so the events that caused a predictive failure can be recreated. The drive measures and saves parameters once every two hours subject to an idle period on the interface. The process of measuring off-line attribute data and saving data to the disc is uninterrupt able. The maximum online only (DEXCPT = 0; PE RF = 1) processing d elay is 35 msec. The maximum fully-enabled (DE XCPT = 0, PERF = 0) processing delay is 220 msec.

Repor tin g c on t rol

Reporting is controlled in the Informational Exceptions Control mode page (1Ch). Subject to the repor ting method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and power cycles.

Attribute FRU code Predictive fail ure description

LBA reassignment Read data errors Recovered TAs Preamp detectable TAs Seek errors Spin-up errors

04 32 37 38 43 5B

LBA reassignment exceeding limits Read data errors exceeding limits ERP TAs exceeding limits WUS TAs exceeding limits Seek error rate e xceeding limits Spin-up retry count exceeding limits

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 interval defines the number of operations over which to measure the rate. The counter that keeps track of the current number of operations is referred to as the Interval Counter.

S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of errors for the current interval. This counter is referred to as the Failure Counter.

Barracud a 18FC Pr oduct Manual, Rev. B 15

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

Predictive failures

S.M.A.R.T. signals predi ctive failures when the drive is p erforming unac cept ably for a period of tim e. The fir m ware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is in cremented eac h time the error rate is una cceptable and decrem ented (not to exceed zero) whenever the error rate is acceptable. If the counter continually increments such that it reaches the predictive threshold, a predictive failure is signaled. This counter is referred to as the Failure History Counter. There is a separate Failure History Counter for each attribute.

5.3 Reliability and service

The reliability of Barracuda 18FC disc drives can be enhanced by ensuring that the drive receives adequate cooling. This section provides recommended air-flow information, temperature measurements, and other information, which you can use to enhance the service life of the drive.

5.3.1 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 temperates specified in Section 8.4.1 are not exceeded. Short-term excursions up to the specification limits of the operating environment will not affect MTBF performanc e. Operating the dr ive at case temperatures above these values will adversely affect the drive’s ability to meet specifications. See section 6.4, “Environmental limits” on page 21.

The following expression defines MTBF:

MTBF = Estimated power-on operating hours in the period

Number of drive failures in the period

Estimated power-on operating hours means the estimated total power-on hours (POH) for all drives in service. Drive failure means any stoppage or substandard performance caused by drive malfunction.

• 8,640 POH per year

• 250 average on/off cycles per year

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

• Operating at nominal voltages Data is calc u lated on a ro lling-average base for a minimum pe riod of six months.

5.3.2 Field failure rate vs time

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

• 720 POH per month

• 250 on/off cycles per year

• Read/seek/write operation 20% of POH

• System provides adequate cool ing to ensure the case temperatures specified in Figures 8 and 9 are not

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

16 Barracuda 18FC Product Manual, Rev . B

Month Parts per mil li on (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

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

5.3.3 Preventive maintenance

No routine scheduled preventive maintenance is required.

5.3.4 Service life

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

5.3.5 Servi c e philosophy

Special equipment is requ ired to repair the dri ve HDA. To achieve the above service life, repairs must be performed only at a properly equipped and staffed Seagate ser vice and repair facility. Tr oubleshooting and repair of PCBs in the field is not recommended because of the extensive diagnostic equipment required for effective servicing. The drive warranty is voided if the HDA is opened.

5.3.6 Service tools

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

5.3.7 Product warranty

Beginning on the date of ship men t to the c usto mer an d cont inuing for a period o f five years, Seagate warrants that each product (inc luding compone nts and s ubassemblies) that fails to function properly und er nor mal us e due to defect in materials or workmanship o r due to nonconformance to the applicable specifications will be repaired or replaced, at S eagate’s option and at no charge to the customer, if returned by customer at c ustomer’s expense to Seagate’s designated facility in accordance with 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 ca n also det er mi ne rem ain ing warranty using t he Sea gate web s ite (www.seagate.com). The drive serial number is required to determine remaining warranty information.

Shipping

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

Barracud a 18FC Pr oduct Manual, Rev. B 17

Seagate repair centers may refuse recei pt of components improper ly packaged or obviously dam aged in transit. Contact your authorized S eagate d istributor to purchas e additional boxes. Seagate recommends shipping by an air-ride carrier experienced in handling computer equipment.

Product repair and return information

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

5.3.8 Hot plugging the driv e

Inserting and removing the drive on the FC-AL will interrupt loop operation. The interr uption occurs when the receiver of the next device in the loop must synchron ize to a different input signa l. FC error det ection mec hanisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recov ery is initiated based on the type of error.

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

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

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

If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state. Note. It is the responsibility o f the s ystem s int egrator to ass ure t hat no temperature, energy, voltage haz ard,

or ESD potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from the drive ca rrier prio r to inserting it into the syst em.

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.

Barracud a 18FC Pr oduct 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 requirements for a single drive are shown below. On-board +3.3V current is derived on the drive. Values indicated apply at the drive connector. Parameters, other than spindle start, are measured after a 10-minute warm-up.

T able 1: DC power requirements

ST118273FC +5V

±5%

Voltage regulation Notes

Avg idle current [1] [7] [8] 1.50 0.80 Max start current (peak DC) [3] 1.70 3.1 Delayed m otor start (max) [1] [4] 1.45 0.03 Operating current: Typical [1] [6] 1.65 1.25 Maximum [1] 1.70 1.30 Max (peak) 2.00 3.1

[5]

(Amps)

+12V ±5%

[2]

(Amps)

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

ues.

[2] A –10% tolerance is allowed during ini tial spindle star t but must return to ±5% before reaching 7,200

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

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

Motor co mmand. [5] See paragraph 6.2.1, “Conducted noise immunity.” Specified voltage tolerance includes ripple, noise, and

transient response. [6] Operating condition is defined as random seek reads of 64 blocks. [7] All power saving features enabled. [8] During idle, the heads are relocated e very 60 seconds to a random location within the band from track 0 to

one-fourth of maximum track. This will result in a random variation in the +12 volt idle curren t of 0.0152

Amperes (0.182 Watts).

General DC power requirement notes.

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

shown.

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

3. Where power is provided to multiple drives from a common supply, careful consideration 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.

20 Barracuda 18FC Product Manual, Rev . B

6.2.1 Conducted noise immunity

Noise is specified as a per iodic and random distri bution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive 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 req uire power sequencing. T he dr ive protects against ina dvertent wr iting duri ng power-up and down.

6.2.3 Curr ent profil es

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

4.0

3.5

3.0

2.5

2.0

+12V

Current

(amps)

1.5

1.0

0.5

0.0

0.0 4 8 12 20 24 28 32 40

Figure 3. Typical Barracuda 18FC drive +12V current profile

Component

Nominal (average) DC curve

16 36

TIME (seconds)

T0 Po wer is applied to the driv e. T1 Controller sel f-tests are perf ormed. T2 Spindle begins to accel erate under cur rent li m iting after performing internal diagno sti cs. T3 Spindle is up to speed and the head and arm restraint is unloc ked.

Note:

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

6.3 Power dissipation

Typical seek power dissipation is 23.3 watts (79.4 BTUs per hour) of DC power average at nominal voltages. Typical power dissipation under idle conditions is 17.1 watts (58.4 BTUs per hour).

Barracud a 18FC Pr oduct Manual, Rev. B 21

6.4 Environmental limits

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

6.4.1 Temperature

a. Operating

The MTBF specification for the drive is based on ope rating at a local am bient temperature of 86°F (3 0°C). Occasional excursions to drive ambient te mperatures of 122°F (50°C) or 4 1°F (5°C) may occur without impact to specified MTBF. The e nclosure for the drive should be designed such that the PCBA and case temperatures listed in Section 8.4.1 and illustrated in Figures 8 and 9 on page 30 are not exceeded. Air flow may be needed to achieve these temperature values. Continual or sustained operation at case temperatures above these values will degrade MTBF.

The drive meets all specifications over a 41°F to 122°F (5°C to 50°C) drive ambient temperature range with a maximum gradient of 36°F (20°C) per hour when the case temperature limits specified above are not exceeded.

b. Non-operating

Non-operating temperature should remain between –40°F to 158°F (–40°C to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This assumes that the drive is packaged i n the s hipping c ontainer designed by Seagate.

6.4.2 Relative humidity

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

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

b. Non-operating

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

6.4.3 Effective altitude (sea level reference)

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 spe cified in this doc um ent are me as ured di rectly on t he d rive ch assis. If the drive is installed in an enclosure to which the stated s hock and/or vibration cr iteri a are appli ed, resonances may occur internally to the enclosure resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the enclosure to minimize drive movement.

The limits of shock and vibration defined within this document are specified with the drive mounted in a vertical or horizontal position and in accordance with the restrictions of Section 8.4 . Or ientat ion of the side nearest the LED may be up or down.

6.4.4.1 Shock

a. Operating (normal)

The drive, as installed for normal operation, will operate error free while s ubjected t o i nte rm ittent shock not exceeding 2.0 Gs at a m ax imum duration of 11 msec (h alf sinewave). Shock may be applied in the X , Y, or Z axis.

b. Operating (abnormal)

Equipment as installed for norm al operation will not incur physical damage whi le subjected to inter mittent shock not exceeding 10 Gs at a maximum duration of 11 msec (ha lf sinewave). Shock occurring at abnor-

22 Barracuda 18FC Product Manual, Rev . B

mal 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 apply to all conditions of handling and transpo rt ation. This includes bot h isolated drives and integrated drives.

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

The drive subjected to non-repetitive shock not exceeding 140 Gs at a maximum of 2 msec (half sinewave) will not exhibit device damage or performance degradation. Shock may be applied in the X, Y, or Z axis.

d. Packaged

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

Package size Packaged/product weight Drop height

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

6.4.4.2 Vibration

a. Operating (normal)

The drive as installed for normal operation will operate error free while subjected to continuous vibration not exceeding:

5–350 Hz @ 0.5 G

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

b. Operating (abnormal)

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

15 minutes of duration at major resonant frequency 5–400 Hz @ 0.75 G

Vibration occuring at these levels may degrade operating performance during the abnormal vibration period. Specified operating pe rform ance wi ll cont inue when normal operating v ibration levels are resumed. This assumes system recovery routines are available. Abnormal vibration may be applied on the X, Y, or Z axis.

c. Non-operating

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

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

5–22 Hz @ 0.081 in. (2.05 mm) displacement 22–350 Hz @ 2.00 Gs

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.

Barracud a 18FC Pr oduct Manual, Rev. B 23

6.5 Electromagnetic susceptibility

As a component part, t he drive is not required to meet any s usceptibility performance req uirements. It is the responsibility of the system integrator to perform tests required to ensure that equipment operating in the same system as the drive does not adversely affect the performance of the drive. See paragraph 6.2, “DC power requirements.”

6.6 Mechanical specifications

The following nominal dimensions are exclusive of the decorative front panel accessory. See Figure 4 for detailed mounting configuration dimensions for the drive. See Figure 12 on page 47 for detailed FC-AL SCA connector dimensions.

Height 1.62 in 41.1 mm Width 4.00 in 101.6 mm Depth 5.75 in 146.05 mm Weight 2.1 lb 0.95 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

[1]

.136

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

A B C D E F

H J K L

M N

P R

4.00

1.026 .620

4.000 .250

3.750

2.380

1.750

0.181

1.622

1.620

.1215 .1215

± ±

max ref

+ –

± ± ±

+ – + –

max max

0.025

0.015

0.010

0.011

0.005

0.010

0.013

0.007

0.027

0.021

0.025

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 4. Mounting configuration dimensions

Barracud a 18FC Pr oduct Manual, Rev. B 25

7.0 Defect and error management

The drive, as delivered, complies with t his p roduc t manua l. The read error rates and s pecified s torage ca pacities are not dependent upon use of defect management routines by the host (initiator).

Defect and error management in the SC SI protocol involves the drive internal de fect/error management 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 briefly outlined in this section. References to other sections are provided when necessary .

7.1 Drive internal defects/errors

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

Details of the SCSI commands suppor ted by the drive are described in the Also, more information on the drive error recovery philosophy is presented in the

ual

7.2 Drive error recovery procedures

When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover the data. The error recovery procedures used depend on the options previously set in the Error Recovery Parameters mode page. Error recovery and defect management may involve using several SCSI comm ands described in the 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 co m mand in addition to c ontrolling the r ecovery level for a sin gle LBA. The total amo unt of time spent i n error recovery for a command can be limited using the Recovery Time Lim it bytes in the Error Recovery mode page. The total amount of time spent in error recovery for a single LB A can be l imited using the Rea d Retry Count or Write Retry Count bytes in the Error Recovery mode page.

The drive firmware error recovery algorithms consists of 12 levels for read recoveries and five levels for write. Each level may consist of multiple steps, where a st ep is defined as a recovery function involving a single reread or re-write attempt. The maximum level used by the drive in LBA recovery is de ter m ined by the read a nd write retry counts.

Table 2 eq uates the read and wr ite retry count wit h the maximum possible recovery time for read and write recovery of individual LBAs. The times given do not include time taken to perform reallocations. Reallocations are performed when the ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the recovery time limit for the command has not yet been met. Time needed to perform reallocation is not counted against the recovery time limit.

Fibre Channel Interface Manual

Fibre Channel Interface Man-

. The drive implements selectable error

26 Barracuda 18FC Product Manual, Rev . B

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

Table 2: Read and write retry count maximum recovery times

Read retry count [1]

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

Maximum reco very time per LBA (cumul ati ve, msec)

Write retry count

Maximum recovery time per

[1]

LBA (cumul ati ve, msec)

[1] Setting these retry counts to a value below the default setting could result in degradation of the unrecov-

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

7.3 FC-AL system errors

Information on the repor ting of operational errors or faults across the interface is given in the

Interface Manual

. The FCP Response returns information to the host about numerou s kinds of errors or faults.

Fibre Channel

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.

Barracud a 18FC Pr oduct Manual, Rev. B 27

8.0 Installation

Barracuda 18FC disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connect or (FC -SCA) no cables are required. See Section 9.5 for additional information about this connec tor.

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 21 on page 51). 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 un ique hard addresses (and therefore have duplicate selection IDs assigned to two or more devices), the FC -AL ge nerates a mes sage in dicat ing this c ondition. If you set the AL_PA on the backpanel to a value of 0, the system issues a unique soft -assi gned physical address automatically .

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

• Set all option selections in the connector prior to applying power to the drive. If you change options after applying power to the drive, recycle the drive power to activate the new settings.

• It is not necessary to low-level format this drive. The drive is shipped from the factory low-level formatted in 512-byte logical blocks. You need to reformat the drive only if you want to select a different logical block size.

—

8.1 Drive ID/option selection

All drive options are made through t he interface connector (J1). Table 18 on page 48 provides the pin descriptions for the 40-pin Fibre Channel single connector (J1).

8.2 LED connections

A connector, J6, is provided on the printed circuit board assembly (PCBA) to provide por t bypass, drive active, and drive fault LED connections (see Figu re 6 on page 28). See Sectio ns 9.5.7, 9.5.8, and 9.5.9 for descriptions of LED functions.

Figure 5. Physical interface

28 Barracuda 18FC 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 this LE D dri ver. Tie the minus side of an

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

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

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

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

Figure 6. 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 moun ted in any orientation. All drive performance characterizations, however, have been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.

8.4 Cooling

Cabinet cooling must be designed by the customer so that the ambient temp erature immedi ately surrounding the drive will not exceed temper ature conditions specified in Section 6 .4.1, “Temperature.” Spec ific cons ideration should be given to make sure adequat e air circulation is present around the pri nted c ircuit board ass em bly (PCBA) to meet the requirements of Section 6.4.1, “Temperature.”

8.4.1 Air flow

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

Barracud a 18FC Pr oduct Manual, Rev. B 29

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

Possible air-flow patterns are s hown i n F igure 7. T he air-flow patterns are created by one o r m ore fans, either forcing or drawing air as shown in th e illustrations. Other ai r-flow patterns are acc eptable as long as the temperature measurement guidelines are met.

Above unit

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)

Under unit

Above unit

Under unit

Figure 7. Air flow

To confirm that the required cooling for the electronics and HDA is provided, place the drive in its final mechanical configuration, perform random write/read operations and, after the tem peratures stabilize, measure the case temperature of t he co mpo nent s listed below. Component reference locations are shown i n F igure 8. The

typical ambient air temperature associated with the list is 25

C and the resulting MTBF is 1,000,000 hours.

FIgure 7 shows the air flow pattern used to gen erate the 1,000,000 hours MT B F tem perature guidelines listed below. Local average air velocities were 235 lpm (1.2 m/s) and air temperature was 77°F (25°C) pl us a 5°C temperature rise in the test enclosure (30°C ambient local to the drive).

30 Barracuda 18FC Product Manual, Rev . B

PCBA and HDA temperatures

MTBF 1,000,000 hours at 30°C ambient temperature

Component Reference

HDA Figure 9 45 Transceiver 1 56 Aurora 2 53 Servo DSP (Bailey) 3 48 Motor Control (Musket) 4 45 Read Chain (King Cobra) 5 48

(°C)

To obtain the m aximum temperature for each of the reference components l isted, add 20°C to the 1,00 0,000 hour MTBF case temperatures. The maximum allowable HDA case temperature is 60°C (see Figure 9). Operation of the dr ive at the max imum case temperature is intended for shor t time per iods only. Continuous operation at the elevated temperatures will reduce produc t reliabili ty.

Figure 8. PCBA temperature measurement location s

HDA Temp.

Check Point

1.00

Figure 9. HDA case temperature measurement location

Barracud a 18FC Pr oduct Manual, Rev. B 31

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:

K x X = F <

15lb = 67N

where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distor tion (units in i nches or milli meters) . Th e out-of-plane di stor tion (X ) is deter mine d by defini ng a p lane with three of the four mounting points fixed and evaluating the out-of-plane def lection of the four th mounting point when a known force (F) is applied to the fourth point.

8.6 Grounding

Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. Maximizing the conductive contact area between HDA ground and system ground may reduce radiated emissions. If you do not want the system chassis to be connected to the HDA/PCBA ground, you must provide a nonconductive (electrically i solating) m ethod of mounting the dri ve in the host equi pm ent; however, this may increase radiated emissions and is the system designer’s responsibility.

Barracud a 18FC Pr oduct Manual, Rev. B 33

9.0 Interface requirements

This section partially descr ibes the interface requirements as implemented on ST118273FC dri ves. Additional information is provided in the

Fibre Channel Interface Manual

9.1 FC-AL features

This section lists the Fibre Channel-specific features supported by ST118273FC drives.

9.1.1 Fibre Channel link service frames

Table 3 lists the link services supported by ST118273FC drives.

Table 3: Link services supported

Type of frame Link service

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

Basic_Reject (BA_RJT)

Extended link service frames N_Port Login (PLOGI)

Fabric Logi n (FLO GI) Logout (LOGO) Process Login (PRLI) Process Logout (PRLO) Read Link Status (RLS) Port Discovery (PDISC) Address Discovery (ADISC) Third-party Process Logout (TRPLO)

Extended link service reply frames Accept (ACC)

Link Service Reject (LS_RJT)

(part number 77767496 ).

9.1.2 Fibre Channel task management functions

Table 4 lists the Fibre Chan nel SC S I Fibre Channel Protocol (FC SCSI FCP) task m anagem ent func tions s upported.

Table 4: Fibre Channel SCSI FCP task management functions

T ask nam e 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 respo nse s

Table 5 lists the FC SCSI FCP response codes returned for task management functions supported.

T able 5: FC SCSI FCP response codes

Function name Response code

Function complet e 00 Function not supported 04 Function reject 05

34 Barracuda 18FC Product Manual, Rev . B

9.1.4 Fibre Channel port login

Table 6 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.

T able 6: N_Port login (PL OGI) payload

Bytes

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

X Indicates a four-bit (hex) field is not checked. x Indicates a single bit not checked. BB BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0). CF Co mmon features . This binary field selects the common feature s requested by the initiator login.

MSB Continuously increasing offset Must = 1

Random relat ive offset Not checked. P ort Login Accept w ill return a 0—not supported. Valid version level x N_Port/F_Port Must = 0, N_Port Altern ate credit model Must = 1 Other bits reserved xxx XX

FS Receive buffer field size. The FS field in the common and Class 3 paramet ers is checked for t he range 129 < FS < 2,112 and a

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

PN Port name (ini t ia to r’s)—saved wi th th e lo gi n pa ra met e rs . If a cha ng e of th e po rt name/ A L_ PA address as soc ia t ion is det ec te d dur-

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

MSB Class valid Must = 1

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

IC Initiator control

MSB XID reassign xx

Proc As sc 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.

Barracud a 18FC Pr oduct Manual, Rev. B 35

9.1.5 Fibre Channel port login accept

Table 7 identifies the N_Port Login access payload values.

T able 7: N_Port Login Access (ACC) payload

Bytes

0-15 02 00 00 00 09 09 00 00 88 00 FS FS 00 FF 00 01 Common 16-31 00 00 01 F4 10 PP 00 20 37 UI UI UI 10 00 00 20 32-35 37 UI UI UI 36- 47 00 00 00 00 00 00 00 00 00 00 00 00 C lass 1 48-51 00 00 00 00 52- 63 00 00 00 00 00 00 00 00 00 00 00 00 C lass 2 64-67 00 00 00 00 68- 79 80 00 00 00 00 00 FS FS 00 FF 00 00 Cl a ss 3 80-83 00 01 00 00 84- 95 00 00 00 00 00 00 00 00 00 00 00 00 R e ser ved 96-99 00 00 00 00 100-111 00 00 00 00 00 00 00 00 00 00 00 00 Vendor 112-115 00 00 00 00 Version

FS Receive buffer field size. The drive returns and uses the receive buffer size from the N_Port Login Class 3 re ceive buffer . UI Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and N ode Name

fiel ds.

PP Port identifier field.

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

9.1.6 Fibre Channel Process Login (PRLI)

Table 8 lists the process login payload data.

Table 8: 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 00 00 00 22

XX Indicates fields that ar e not used.

9.1.7 Fibre Channel Process Accept (ACC)

Table 9 lists the process login accept payload data.

Table 9: 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 00 00 00 12

36 Barracuda 18FC Product Manual, Rev . B

9.1.8 Fibre Channel fabric login

Table 10 lists the fabric login payload from the drive.

T able 10: Fabric Login (FLOGI) payload

Bytes

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

fiel ds.

PP Port identifier field.

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

Barracud a 18FC Pr oduct Manual, Rev. B 37

9.1.9 Fibre Channel fabric accept login

Table 10 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.

Table 11: 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_ PN PN PN PN PN PN PN PN NN NN NN NN 32-35 NN NN NN NN 36-47 XX XX XX XX XX XX XX XX XX XX XX XX Class 1 48-51 XX XX XX XX 52-63 XX XX XX XX XX XX XX XX XX XX XX XX Class 2 64-67 XX XX XX XX 68-79 SO SO xx xx XX XX FS FS XX xx XX XX Class 3 80-83 OS OS XX XX 84-95 XX XX XX XX XX XX XX XX XX XX XX XX Reserved 96-99 XX XX XX XX 100-111 XX XX XX XX XX XX XX XX XX XX XX XX Vendor 112-115 XX XX XX XX Version

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

MSB Continuously increasing offse t x

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

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

mult iple of f our b yt es. T he re ce iv e buf fer field size in the C lass 3 pa r am eter s i s us ed . The dr iv e use s t he lo we r FS of Fabric Login Accept or N_Port Login when sending frames to a n 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 FAB. 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 deliv ery Must = 1 Other bi ts reserved xxx XX

38 Barracuda 18FC Product Manual, Rev . B

9.1.10 Fibre Channe l Arb itr ated Loop op t io ns

Table 12 lists the FC-AL options suppor ted by Barracuda 18FC dr ives.

T able 12: FC-AL options supported

Option Supported

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

Accepted from another device. Private Loop Yes Public Loop No Old Port State No Loop Posi tion Yes Loop Position Report Y es

9.2 Dual port suppor t

ST118273FC drives have two independent FC-AL port s. These por ts may be connected on independent loops or on the same loop. Port A and Port B may be connected in any order or combination.

• If both ports are connected on independent loops and hard addressing is used, the drive interface address is selected through the in terface connec tor and both ports w ill seek t he sam e loop address. If no conflict, bot h por ts w ill h ave the same loop address.

• If both ports are connect ed in the sam e loo p and hard ad dres sing is used, at leas t one port will attempt taking a soft address to prevent an address conflict.

Note. When an ST118273FC drive is connected in loops with previous Seagate FC drive products:

Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC) Barracuda 9FC (ST19171FC) Cheetah 4LP FC (ST34501FC) Cheetah 9FC (ST19101FC)

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

Subject to buffer availability, Barracuda 18F C dr ives support:

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

• Full duplex—The drive supports an output transfer while receiving a transfer on the same or both ports.

Barracud a 18FC Pr oduct Manual, Rev. B 39

9.3 SCSI commands supported

Table 13 lists the SCSI commands that ST 118273 FC drives support.

Table 13: Supported commands

Command code Supported Command name

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

Y Extended sense Y Field pointe r bytes

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

Y Vital product data page

Y Unit serial numbe r page

Y Implemented operating def. page

Y Firmware numbers page

Y Date code page

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

N 3rd party reserved

N Extent reservation 17h Y Release 18h N Copy 19h Y Fibre Channel Control page 1Ah Y Mode sense

Y Unit attention page (00h)

Y Error recovery page (01h)

Y Disconnect/reconnect cont rol (page 02h)

Y Format page (03h)

Y Rigid disc drive geometry page (04h)

Y Verify error recovery page (07h)

Y Caching parameters page (08h)

Y Control mode page (0Ah)

Y Po w er control page (1Ah)

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

Y Supported diagnostics pages

Y Translate page

40 Barracuda 18FC Product Manual, Rev . B

Table 13: Supported commands

Command code

1Dh Y Send diagnostics page

25h Y Read capacity 28h Y Read extended

2Ah Y Write extended

2Bh Y Seek extended 2Eh Y Write and verify

2Fh Y Verify

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

3Ch Y Read buffer

Supported

(continued)

Command name

Y Enclosure services page

Y Supported diagnostics pages Y Translate page

Y Disable page out Y Force unit access N Relative address

Y Disable page out Y Byte check N Relative address

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 offset s m ode (6) Y Download microcode with offsets and sa ve mode (7) Y Firmware download option [2]

Y Read combined header and data mode (0) Y Read data mode (2)

Barracud a 18FC Pr oduct Manual, Rev. B 41

Table 13: Supported commands

Command code

3Eh Y Read long 3Fh Y Write long 40h N Change definition 41h Y Write same

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

57h Y Released (10) 58-59h N Not used 5Ah Y Mode Sense (10) [3] 5B-5Dh N Not used 5Eh Y Persistent Rese rve In 5Fh Y Persistent Reserve Out 60-7Fh N Not used 80h N XD write extended 81h N Rebuild 82h Y Regenerate 83-8Fh N Not used C0-DFh N Not used EO-FFh N Not used

Supported

(continued)

Command name

Y Read descriptor mode (3)

N PBdata

NLBdata

Y 3rd party reserve

N Extent reservation

[1] Barracuda 18FC drives can format to any multiple of four bytes per logical block in the range 512 to 4,096

bytes.

[2] Warning. Power loss during flash programm ing can result in firmware corrupt ion . This usually ma kes the

drive inoperable.

[3] Reference Mode Sense command 1Ah for mode pages suppor t ed.

42 Barracuda 18FC Product Manual, Rev . B

9.3.1 Inquiry data

Table 14 lists the Inquir y comma nd data that the dr ive should return to the initiator per the forma t given in the

Fibre Channel Interface Manual

T able 14: Barracuda 18FC inquiry data

Bytes Data (hex)

0-15 00 00 ** 22 8F 00 PP 02 53 45 41 47 41 54 45 20 Vendor ID 16-31 [53 54 31 31 38 32 37 33 46 43] 20 20 20 20 20 20 Product ID 32-47 R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00 48-63 00000000000000000000000000000000 64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 31* *Copyright 112-127 39* 39* 38* 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 feat ures (default).

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

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

9.3.2 Mode Sense data

The Mode Sen se c om man d provides a way for the drive to report i ts o perating param ete rs to the ini tiator. The drive maintains four sets of mode parameters:

1. Default values

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

2. Saved values

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

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

On drives requiring unique saved values, the required unique saved values are stored into the saved values storage location on the m edia p rior t o shi pping the dri ve. Some drives may have unique firmware with unique default values also.

On standard OEM dr ives, 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 chan ge the values iden tified as chang eable values. Originally, current values are installed from saved or default values after a power on reset, hard reset, or Bus Device Reset message.

Barracud a 18FC Pr oduct Manual, Rev. B 43

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) indicates the value is not changeable. For example, in Table 15, refer to Mode page 81, in the row entitled “CHG.” Th ese are hex numbers representing the chan geable values for Mode pa ge

81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the bits are changea ble. Note also that bytes 06, 07, 09 , 10, and 11 are not chan geable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones, 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 often several different versions of drive control firmware in the total population of

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

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

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

Fibre Channel Interface Manual

44 Barracuda 18FC Product Manual, Rev . B

T able 15: Mode Sense data default and chan geable values f or ST118273FC drives

ST118273FC Bytes

Mode Sense Header

DEF

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

DEF 82 0E 80 80 00 00 00 00 00 00 02 2B 00 00 00 00

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

DEF 83 16 34 80 00 00 00 11 00 00 00 ED 02 00 00 01 00 24 00 34 40 00 00 00

CHG

DEF 84 16 00 1D 4D 14 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 09 00 00

CHG

DEF 87 0A 00 0C E8 00 00 00 00 00 FF FF

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

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

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

<----------- -- -- ------- -- -- ------------- -- -- ----- Mo de se n s e pa ge s da ta -- ------- -- -- ------ -- --- ------ -- -- ------------- ->

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

83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 0 0 00 00 00 00 00 00 00 00

84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 0 0 00 00 00 00 00 00 00 00

DEF 88 12 10 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 0 A 03 F1 08 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 3F 00 00 00 00

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

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

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

CHG 9C 0A 8D 0F 00 00 00 00 00 00 00 00 00

DEF 80 02 00 00

CHG 80 02 37 4 0

<--- Read capacity data --->

02 1E B3 8F 00 00 02 00

Barracud a 18FC Pr oduct Manual, Rev. B 45

9.4 Miscellaneous operating features and condition s

Table 16 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported . An “N” in the support column indicate s the feature or condition is not supported.

Table 16: Miscellaneous features

Supported Feature or condit ion

Y FC-AL selective reset Y Automatic contingent allegiance N Asynchronous e vent noti fi cation N Synchronized (locked) spi ndle 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 b ytes 15, 16, and 17 N Adaptive caching Y SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes

Table 17: Miscellaneous status

Supported Status

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

46 Barracuda 18FC Product Manual, Rev . B

9.5 FC-AL physical interface

Figure 10 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA) and the J 6 connector. Figure 12 provides the dimensions of the FC-SCA. Fi gure 13 provides the di mensions of the J6 connector.

Details of the physical, electr ical, and logical characteristics are provided within this section. The operational aspects of Seagate’s Fibre Channel drives are provided in the

Fibre Channel Interface Manual

Figure 10. Physical interface

9.5.1 Physical characteristics

This section defines physical interface connector and its functions on a loop.

9.5.1.1 Physical description

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

Port bypass circuits (PBCs) allow devices to be inserted i nto unpop ulated locations or rem oved from the loop with loop operation recovery after a brief interruption. These PB Cs are located external to the FC-AL device. Figure 11 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 11. Port bypass circui t physical interconnect

SerialInSerial

Select

Drive N

Out

Drive N+1

Barracud a 18FC Pr oduct Manual, Rev. B 47

9.5.2 Connector requirements

Recommended mating SCA part number:

Part description Positions Part number Features

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

The FC-AL SCA device connector is illustrated in Figure 12. The J6 connector is illustrated in Figure 13.

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)

Figure 12. FC-AL SCA device connector dimensions

–.010 in

(–0.25 mm)

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 13. J6 connector dimensions

.787

(19.99 mm)

.079 (2 mm)

.708

(17.983 mm)

48 Barracuda 18FC Product Manual, Rev . B

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

• Enclos ur e 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 18: FC-SCA pin descriptions

Pin Signal name Signal type Pin Signal name Signal type

1* -EN bypass port A T TL outp ut 21 12 Volts charge 2* 12 Volts 22 Ground 3* 12 Volts 23 Ground 4* 12 Volts 24* +Port A_in Diff. PECL input pair 5* -Parallel ESI 25* -Port A_in 6* Ground [1] 26 Ground 7* Active LED out Open co llect or out 27* +Port B_in Diff. PECL input pair 8* Reserved 28* -Port B_in 9* Start_1 TTL input 29 Ground 10* Start_2 TTL input 30* +Port A_out Diff PECL output pair 11* -EN bypass port B T TL outp ut 31* -Port A_out 12* SEL_6 TTL input/output 32 Ground 13* SEL_5 TTL input/output 33* +Port B_out Diff PECL output pair 14* SEL_4 TTL input 34* -Port B_out 15* SEL_3 TTL input/output 35 Ground 16* Fault LED out Open collector out 36 SEL_2 TTL input/output 17* Reserved NC 37 SEL_1 TTL input/output 18* Reserved NC 38 SEL_0 TTL input/output 19* 5 Volts 39 Reserved NC 20* 5 V olts 40 5 Vol ts charge

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

pin to the common ground.

Barracud a 18FC Pr oduct Manual, Rev. B 49

9.5.5 FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 14. The receiver is required to provide the AC coupling to eliminate ground shift noise.

Transmitter

150

Figure 14. FC-AL transmitters and receivers

150

Differential

Transfer Medium

.01

150

.01

Receiver

9.5.6 Power

Power is supplied through the FC-S CA 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 provi de +12 v ol t po wer to the drive. The current return for t he +12 volt power supply is through the common ground 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 v oltage 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 charge pins is limited by the system in which the drive operates. Three of the +12 volt pins are shorter to allow capacitive pre-charging through the longer +12 volt charge pin. Two of the +5 volt pins are shorter to allow capacitive precharging through the longer +5 volt charge pin.

9.5.7 Fault LED Out

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

• the drive detects failure of both ports

• the drive detects an internal failure

• the drive receives the appropriate fault LED command from the host The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper

+5 volt supply through an appropriate c urrent-limiting resistor. The LED and the current-limiting resistor are external to the drive.

9.5.8 Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 19.

Table 19: Active LED Out conditions

Normal command activity LED status

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

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

50 Barracuda 18FC Product Manual, Rev . B

9.5.9 Enable port bypass signals

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

The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port Bypass primitive sequence, or on removal of the drive. In the bypass state the drive continues to receive on the inbound fibre. Enable Bypass may be deactivated by detection of a Loop Port Enable primitive sequence if the 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 con trols

The drive’s motor is star ted according to the S tart_1 and Star t_2 signals described in Table 20. The stat e of these signals can be wired into the backplane socket or driven by logic on the backplane.

T able 20: Motor start control si gnals

Case Start_2 Start_1 Motor spin function

1 Low Low Motor spins up at DC power on. 2 High Low Motor spins up only when SCSI St art command is rec eived. 3 Low High Motor spins up after a delay of 12 seconds times the modulo 8 v alue 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 deter mine drive address, and, optionally, can be used for an Enclosure Services Interface (ESI). When the Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL line. Refer to Table 21 for a mapping of SEL to FC-AL physical addresses (AL_PA). You can think of the SEL lines as the equivalent of a backpanel logic plug. The drives does not provide pull up resistors on these lines. The backpanel is required to provide high and low inputs to the SEL_ID lines per the specifications in T able 22 on page 52.

Note. Table 21 gives AL_PA values for each SEL value. The first entry 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 being assigned using the SEL line s and 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 t o E S I m ode i f su pported. There are two modes of ESI, seven bits of enclosure status and a bidirectional mode. ESI sup port and the mode are determined by the dr ive us ing a discover y proc ess. Refer to the

Fibre Channel Inte rface Manual

for a descrip-

tion of ESI operation.

9.5.11.1 Parallel Enclosure Services Interface (ESI)

The parallel ESI line is an outp ut from the drive. This line provides the enclosure with an indication of t he present function of the SE L lines. A high level, the default state, indicates the drive requires address i nformation on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by the drive. Refer to the

Fibre Channel Interface Manual

for a description of ESI operations

Barracud a 18FC Pr oduct Manual, Rev. B 51

Table 21: Arbitrated loop physical address (AL_PA) values

AL_PA (hex)

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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

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

52 Barracuda 18FC Product Manual, Rev . B

9.6 Signal characteristics

This section describes the el ec tr ical sig nal charac terist ics of the dr ive’s input and output signals. See Table 18 on page 48 for signal type and signal name information.

9.6.1 TTL characteristics

Table 22 provides the TTL characteristics.

Table 22: TTL character istic s

State Vol tage Current

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

V Output low (-Parallel ESI) 0 < V Output high (all other outputs) V

V Output low (all other outputs) 0 < V

< 5.5V 0 < IIH < ±500nA max.

< 0.9V 0 < IIL < ±500nA max.

< 5.25V IOH < -3mA

< 0.5V IOL < 3mA

> 2.4V

> 0.9V

OH OH

< .45V IOL < 2.4mA

> 2.4V > 0.9V

< .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 23 for the output characteristics of the LED drive signals.

T able 23: LED drive signal

State Current drive available Output volt age

LED off, high 0 < I LED on, low I

< 100µA

< -30 mA 0 < VOL < 0.4V

9.6.3 Differe ntial PE C L output

The serial PECL output signal voltage characteristics are provided in Table 24. The outputs are not AC coupled in order to deliver maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC characteristics of the outputs and the receiver.

T able 24: Differential PECL output characteristics

Description Parameter Notes

Serial output voltage swing 300 < V

< 650 mV Centered at 1.32V

out

Barracud a 18FC Pr oduct Manual, Rev. B 53

Figure 15 provides the data output valid eye diagram relative to the bit cell time.

941 ps

Vout (mv)

800 ps

Figure 15. Transmit ey e diagram

9.6.4 Differe ntial PE C L i nput

The serial PECL input signal voltage characteristics are provided in Table 25.

Table 25: Differential PECL input characteristics

Description Parameter Notes

Serial input voltage swing 200 < V

< 1.300 mV AC coupled

Figure 16 provides the data valid eye diagram for typical and minimum requirements to rec over data at the specified interface error rate. The inputs are AC coupled on the drive.

941 ps

Vin (mv)

659 ps 376 ps

Figure 16. Receive eye diagram

Typical Minimum

Barracud a 18FC Pr oduct Manual, Rev. B 55

10.0 Seagate Technology support services Online Services

Internet

Visit Seagate on the Internet at http://www.sea gate.com for online information about Seagate produ cts. You can also send e-mail with your disc or tape questions to:

Presales: Technical support

DiscPreSales@Seaga te.com or Ta pe_S ales_S upp ort@Seaga te.com

: DiscSupport@Seagate.com or T apeSupport@Seagate.com

SeaBOARD®

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

is a computer bulletin board system that contains information about Seagate disc and tape dr ive

Presales Support

Our Presales Suppo rt sta ff can help you det ermine w hich Seagate products are best suited for your specific application or computer system.

Seagate Express

You can purchas e select tape products and tape acc ess or ies t hrough S eag ate E xpress 2 4 hours da ily by calling 1-800-531-0968 or by faxing your order to: 1-972-481-4812.

Automated Services

SeaFONE

our automated self-help ser vices. Here you'll find answers to commonly asked questions, troubleshooting tips and specifications for disc drives and tape drives. This service is available 24 hours daily and requires a touchtone phone. International callers can reach this service by dialing 1-405-936-1234.

SeaF AX®

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

(

1-800-SEAGATE )

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

is Seagate's 800 number (1-800-732-4283), whi ch provides toll-free access to

Technical Suppor t

If you need assistance installi ng your dri ve, consult your dealer. For one-on-one help, you can talk to a tech nical support specialist dur ing business hours. Before calling, note your system configuration and drive model number (ST

SeaTDD™(1-405-936-1687)

comments 24 hours dai ly and exchange messages with a tec hnical support specialist from 8:00 A.M. to 12:15 P. M. and 1:30 P.M. to 6:00 P.M. (central time) Monday through Friday.

xxxxx).

is a telecommunications device for the deaf (TDD). You can send questions or

Customer Service (CSO)

Warranty Repair

Seagate direct OEM, Distri bution and System Integrator customers s hould contact the ir Seagate ser vice center representative for warranty information. Other customers should contact their place o f purchase. Seagate offers comprehensive customer support for Seagate drives. These services are available worldwide.

Authorized Service Centers

If your drive is out of warranty, you can contact an Authorized Service Center for service or repair.

56 Barracuda 18FC Product Manual, Rev . B

USA/Canada/Latin America Support Services

Presales Support

Disc: Tape:

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

T e c hnical Support (SeaFONE)

1-800-SEAGATE or 1-405-936-1234 (for specific product phone number)

Disc:

FAX:

1-405-936-1685;

Tape:

1-405-936-1683

Warranty Repair

USA/Canada 1-800-468-3472 FAX: 1-405-949-6740 Latin America 1-405-949-7758 FA X: 1-405-949-6738

SeaFAX 1-800-SEAGATE SeaTDD 1-405-936-1687 SeaBOARD

Disc:

1-405-936-1600;

Tape:

1-405-936-1630

Authorized Service Centers

Brazil

MA Informatica

Canada

Memofix Adtech

55-21-516-6649 FAX: 55-21-516-5280

1-905-660-4936 FAX: 1-905-660-4951 1-905-812-8099 or 1-800-624-9857 FAX: 1-905-812-7807

European Support Services

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

A.M

If your country is not listed here, dial our European call ce nter at 31-20-316-7222 from 8:30 (European central time) Monday through Friday. The European call center is located in Amsterdam , The Net herlands.

. to 5:00 P.M.

Call Center

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

SeaBOARD

France 33 1-48 25 35 95 Germany 49-89-1409331 United Kingdom 44-1628-478011

Barracud a 18FC Pr oduct Manual, Rev. B 57

Fax Services—All European Countries

Presales/Technical Support 31-20-653-3513 Warranty Repair 31-20-653-4320

Africa/Middle East Support Services

For presales, technical support , warranty rep air and FAX services in Afri ca and the Middle E ast,dial our Euro-

A.M

pean call center at 31-20-316-7222 from 8:30 or send a FAX to 31-20-653-4320. The European call center is located in Amsterdam, The Netherlands.

. to 5:00 P.M. (European central time) Monday through Friday,

Asia/Pacific Support Services

If the customer service number for your country is not listed here, dial our Asia/Pacific headquarters located in

A.M

Singapore during business hours from 9:00

T e c hnical Support

Australia 61-2-9725-3366 FA X: 61-2-9725-40 52 Hong Kong 852-2368 9918 FAX: 852-2368 7173 Japan — FAX: 81-3-5462-2979 Singapore 65-488-7584 FAX: 65-488-7528 Taiwan 886-2-2514-223 7 FAX: 886-2-2715-2923

. to 5:00 P.M. Singapore time.

SeaFAX

Australia 61-2 -9756-5170

SeaBOARD

Australia 61-2 -9756-2359 Taiwan 886-2-2719-607 5 Thailand 662-531-8111

Warranty Repair

Japan 81-3-5462-2904 FAX: 81-3-5462-2979 Australia and other 65-485-3595 FAX: 65-488-7503 Asia/Pacific countries

Barracud a 18FC Pr oduct Manual, Rev. B 59

Index

Numerics

12 volt

pins 49 3rd party reserve command 41 5 volt pins 49

Abort Sequence (ABTS) 33 abort task set function 33 AC coupling 49 AC power requirements 19 ACA active status 45 ACA active, faulted initiator status 45 Accept (ACC) 33 active LED Out signal 49 Actual retry count bytes command 39 actuator 7

assembly design 5 adaptive caching 45 Address Discovery (ADISC) 33 addresses 46 air cleanliness 22 air flow 28

direction 29

illustrated 29

pattern 29 Alternate credit model 34, 37 altitude limits

non-operating 21

operating 21 ambient temperature 28 ANSI documents

fibre channel 4

SCSI 4 arbitrated loop 6 arbitrated loop physical address (AL_PA) 27

values, table of 51 arbitration 27 asynchronous event notification 45 audible noise 3 Aurora 30 auto write and read reallocation

programmable 6 automatic contingent allegiance 45 average idle current 19 average rotational latency 9

backpanel 48 backplane 50 basic link service frames 33 Basic_Accept (BA_ACC) 33 Basic_Reject (BA_ RJT ) 33 BB 34, 37

BB-Credit 34, 37 buffer

data 6

space 11 Bullet 30 busy status 45 bypass circuit 17 Byte check command 40 bytes per surface 9 bytes per track 9

cache operation 11 cache segments 11 Caching parameters page (08h) command 39 caching write data 11 Canadian Department of Communications 3 capacity

formatted 7

unformatted 7, 9 CDB Write command (2Ah) 12 CF 34, 37 Change definition command 41 character sync 17 charge pins 49 check condition status 45 Class 3 parameters 34, 37 class B limit 3 Class valid 34, 37 clear ACA function 33 clear task set function 33 commands supported 39 Common features 34, 37 Compare command 40 Concurrent sequences 34 condition met/good status 45 connector

illustrated 47

requirements 47 Continuously increasing offset 34, 37 Control mode page (0Ah) command 39 cooling 28, 29 Copy and verify command 40 Copy command 39 CRC 17

error 13 CS 34 Current profiles 20 customer service 17 cylinders/tracks per surface 9

data block size

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

read/write 9

60 Barracuda 18FC Product Manual, Rev . B

data page out (DPO) bit 12 data rate

internal 9 data transfer rate 10 data valid eye 53 Date code page command 39 DC power 48

requirements 19 defect and error management 25 deferred error handling 45 description 5 device selection IDs 27 devices 27 differential PECL input 53 dimensions

physical 23 Disable page out command 40 disc rotation speed 9 Disconnect/reconnect control (page 02h) command

39 Download microcode and save modes (5) 40 Download microcode mode (4) 40 Download microcode with offsets and save mode (7)

40 Download microcode with offsets mode (6) 40 drive active LED connection 27 drive characteristics 9 drive fault LED connection 27 drive ID 27 drive ID/option select headers 27 drive mounting 31 drive orientation 28 drive select 48 driver signals 52 drivers and receivers 6 dual port support 38 dual port transfers 6

effective altitude 21 electrical

description of connector 48 signal characteristics 52 specifications 19

suscepti b ilit y 23 electromagnetic compatibility 3 electromagnetic interference (EMI) 13 elevated temperatures 30 EMI 13 EMI requirements 3 enable bypass

port A 50

port B 50

signal 50

state 17 Enclosure services page command 39 environmental

interference 13 limits 21 requirements 13

error

detection mechanisms, FC 17 management 25 rates 13

error correction code

96-bit Reed-Solomon 6 Error recovery page (01h) command 39 extended link service

frames 33

reply frames 33 Extended sense command 39 Extent reservation command 41

FAB 37 Fabric Login (FLOGI) 33 FAN 37 fans 29 fault LED out signal 49 FC-AL

document 4

int erf ace 27, 48

options supported 38

physical interface 46

SCA device connector, illustrated 47

selective reset 45 FCC rules and regulations 3 FCP

for SCSI, do cument 4

response codes 33

task management functions 33 FC-PH document 4 features 6

interface 33 Fibre Channel documents 4 Fibre Channel Interface Manual 1, 4 Field pointer bytes command 39 firmware 6

corruption 41 Firmware download option command 40 Firmware numbers page command 39 flawed logical block reallocation 6 FLOGI

received on Port A 36

received on Port B 36 Force unit access command 40 form factor 6 format 27 Format command execution time 9 Format page (03h) command 39 Format unit command 39 FS 34, 35, 37 function

complete, code 00 33

Barracud a 18FC Pr oduct Manual, Rev. B 61

not supported, code 05 33 reject, code 04 33

Good status 45 ground

HDA 31

signal 31 ground shift noise 49 grounding 31

hard assigned arbitrated loop physical address

(AL_PA) 27

head and disc assembly (HDA) 5, 28

case temperature measurement location 30

cooling 29

ground 31 heads

read/write data 9 hot plugging the drive 17 humidity limits 21

non-operating 21

operating 21

IC 34 ID and configuration options 6 Implemented operating def. page command 39 Information exceptions control page (1Ch) command

39 Initiator control 34 Inquiry command 39 inquiry data 42 installat ion 27

guide 4

interface 27

commands supported 39 description 46 error rate 13 errors 13 illustrated 46 physical 46 requirements 33

interleave 6

minimum 10 intermediate/condition met/good status 45 intermediate/good status 45 Intermix 34, 37 internal data rate 9 internal defects/errors 25 internal drive characteristics 9

J1 connector 27 J6 connector 27, 28

Jumper settings page command 39 jumpers 27

latency

average rotational 9, 10 LBdata 41 LED driver signals 52 Link Service Reject (LS_RJT) 33 link services supported 33 Lock-unlock-cache command 40 Log select command 41 Log sense command 41 logic power 49 logical block address 11 logical block reallocation scheme 6 logical block size 6, 10 logical segments 11 Logout (LOGO) 33 loop 46, 50, 51

disruption 17

initialization 27 loop position

FC-AL options 38 loop position report

FC-AL options 38 LS_RJT 34, 37 LSI circuitry 7

maintenance 13 maximum case temperature 30 maximum delayed motor start 19 maximum start current 19 maximum tempe ratures 30 mean time between failure (MTBF) 15 mechanical specifications 23 media description 6 media error rate

recoverable 13 minimum sector interl eave 10 miscellaneous feature support

Adaptive caching 45

Asynchronous event notification 45

Automatic contingent allegiance 45

Deferred error handling 45

FC-AL selective reset 45

Parameter rounding 45

Queue tagging 45

Reporting actual retry count 45

Segmented caching 45

SMP = 1 in Mode Select command 45

Synchronized (locked) spindle operation 45

Zero latency read 45 miscellaneous status support

ACA active 45

ACA active, faulted initiator 45

62 Barracuda 18FC Product Manual, Rev . B

Busy 45 Check condition 45 Condition met/good 45 Good 45 Intermediate/condition met/good 45 Intermediate/good 45 Reservation conflict 45

Task set full 45 miscorrected media data 13 mode page 08h 11 Mode select

(10) command 41

command 39 Mode sense

(10) command 41

command 39

data, table 42, 44 monitoring state 17 motor star t

controls 50

option 10 mounting 31

configuration dimensions 23

holes 31

orientations 28 MTBF 13, 15

defined 15

N_Port Login (PLOGI) 33

payload 34

payload values 35 NN 34, 37 no seek complete error (02h) 13 Node Name 37 Node name 34 noise

audible 3 noise immunity 20

old port state

FC-AL options 38 OPEN Full Duplex

FC-AL options 38 OPEN half duplex

FC-AL options 38 Open sequences per exchange 34 option configurations 27 option selection 48 options 7, 38 OS 34 out-of-plane distortion 31 overhead time

for head switch 10

for one track cylinder switch 10

P_LOGI

received on Port A 35

received on Port B 35 parameter rounding 45 pass-through state 17 PBC 46, 50 PBdata 41 peak operating current 19 peak-to-peak measurements 20 PECL input 53 performance characteristics

detailed 9

general 10 performance highlights 6 physical interface 46

description 46 physical specifications 19 PI 35, 36 pin descriptions 48 PN 34, 37 port bypass circuit 17, 46, 50 port bypass LED connection 27 Port DISCovery 34 Port Discovery (PDISC) 33 port identifier field 35, 36 port login 34

accept 35 Port Name 37 Port name (initiator’s) 34 power 49

dissipation 20

requirements, AC 19

requirements, DC 19

sequencing 20 Power control page (1Ah) command 39 power distribution 3 Prefetch command 40 prefetch/multi-segmented cache control 10 preventive maintenance 13 printed circuit board (PCB)

cooling 28 private loop 6

FC-AL options 38 Proc Assc 34 Process Accept (ACC) 35 Process Login (PRLI) 33, 35 Process Login Accept (ACC) payload 35 process login payload data 35 Process Logout (PRLO) 33 product reliability

reduction in 30 public loop

FC-AL options 38 pull down resistor 50

Barracud a 18FC Pr oduct Manual, Rev. B 63

queue tagging 45

radiated emissions 31 radio interference regulations 3 Random relative offset 34, 37 RCD bit 11 Read buffer command 40 Read capacity command 40 Read combined header and data mode (0) 40 Read command 39 Read data mode (2) 40 Read defect data command 40 Read descriptor mode (3) 40 Read extended command 40 Read Link Status (RLS) 33 Read long command 40 read/write data heads 9 Reassign blocks command 39 Receive buffer field size 34, 37 receive buffer field size 35 Receive diagnostic results command 39 receive eye

diagram 53 receivers 49 recovered error (1h) 13 reference

components 30

documents 4 Regenerate command 41 Relative address command 40 Release command 39 Released (10) command 41 reliability 7

and service 15

specifications 13 repair and return information 17 reporting actual retry count 45 Request sense command 39 reservation conflict status 45 Reserve command 39 Reserved (10) command 41 return information 17 Rezero unit command 39 Rigid disc drive geometry page

command 39 rotation speed 9 running disparity 17

safety 3 SCA part numbers 47 SCSI interface

commands supported 39 SCSI Interface Product Manual 3

Search data

equal command 40 high command 40

low command 40 Seek command 39 seek error

defined 13

rate 13 Seek extended command 40 seek performance characteristics 9 seek positioning error (15h) 13 seek time

average typical 9

full stroke typical 9

single track typical 9 segmented caching 45 SEL ID 27

lines 50

standard feature 6 Self-Monitoring Analysis and Reporting Technology

7, 14 Send diagnostics page command 40 Sequential delivery 34, 37 service

life 13, 16 philosophy 16

tools 16 Service Options 37 Service options 34 servo

DSP, case temperature 30 Set limits command 40 shielding 3 shipping 16 shock limits 21

non-operating 22

operating (abnormal) 21

operating (normal) 21

packaged 22 signal

characteristics 52

ground 31

LED driver 52 single-unit shipping pack kit 7 SMART 7, 14 SMP = 1 in Mode Select command 45 SO 34, 37 spindle brake 6 Stacked connection req. 34, 37 standards 3 Start unit/stop unit command 39 start/stop time 10 support services 55 Supported diagnostics pages command 39, 40 surface stiffness

allowable for non-flat surface 31 switches 27 Synchronize cache command 40

64 Barracuda 18FC Product Manual, Rev . B

synchronized spindle

operation 45

target reset function 33 task management functions 33

Abort task set 33 Clear ACA 33 Clear task set 33 Target reset 33 termi n ate task 33

task management response codes 33

Function complete 00 33 Function not supported 05 33

Function reject 04 33 task set full status 45 technical support services 55 temperature

limits 21

measurement locations 30

regulation 3

seagate ST118273FC Installation guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Barracuda 18FC Disc Drive

ST118273FC

Product Manual, Volume 1

Barracuda 18FC Disc Drive

ST118273FC

Product Manual, Volume 1

Revision status summary sheet

Contents

List of Figures

1.0 Scope

2.0 Applicable standards and reference documentation

2.1 Standards

2.1.1 Electromagnetic compatibility

2.1.1.1 Electromagnetic susceptibility

2.2 Electromagnetic compliance

Electromagnetic compliance for the European Union

Australian C-Ti ck

2.3 Reference documents

3.0 General description

Figure 2. Barracuda 18FC disc drive

3.1 Standard features

3.2 Media description

3.3 Performance

3.4 Reliability

3.5 Unformatted a n d formatted capacities

3.6 Factory-installed accessories

3.7 Factory-installed options

3.8 User-installed accessories

4.0 Performance characteristics

4.1 Internal drive characteristics

4.2 Seek performance characteristics

4.2.1 Access time

4.2.3 General performance characteristics

4.3 S tar t/st op time

4.4 Prefetch/multi-segmented cache control

4.5 Cache operation Note. Refer to the

4.5.1 Caching write data

5.0 Reliability specifications

5.1 Error rates

5.1.1 Environmental interference

5.1.2 Interface errors

5.1.3 Write erro rs

5.1.4 Seek errors

5.2 S.M.A.R.T.

Controling S.M.A.R.T.

Performance impact

Repor tin g c on t rol

Determining rate

Predictive failures

5.3 Reliability and service

5.3.1 Mean time between failure (MTBF)

5.3.2 Field failure rate vs time

5.3.3 Preventive maintenance

5.3.4 Service life

5.3.5 Servi c e philosophy

5.3.6 Service tools

5.3.7 Product warranty

Shipping

Product repair and return information

5.3.8 Hot plugging the driv e

6.0 Physical/electrical specifications

6.1 AC power requirements

6.2 DC power requirements

T able 1: DC power requirements

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

6.2.1 Conducted noise immunity

6.2.2 Power sequencing

6.2.3 Curr ent profil es

Figure 3. Typical Barracuda 18FC drive +12V current profile

6.3 Power dissipation

6.4 Environmental limits

6.4.1 Temperature

a. Operating

b. Non-operating

6.4.2 Relative humidity

b. Non-operating