Seagate Cheetah 10K.7 FC ST336807FC Product Manual

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Users Guide

Cheetah 10K.7 FC

ST336807FC

Users Guide

Cheetah 10K.7 FC

ST336807FC

Publication number: 100384022, Rev. A

August 2005

Seagate and Seagate Technology are reg istered trademarks of Seagate Technology LLC. Cheetah, SeaTools, SeaFONE, Se aBOARD, SeaTDD, and th e Wave logo are either regis tered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners.

Seagate reserves the right to ch ange, witho ut notice, product offerings or spec ifications . No

part of this publication may be reproduc ed in any form w ithout wr itte n per mi ssio n of Seagate

Technology LLC.

Revision status summary sheet

Revision Date Sheets Affected

Rev. A 05/04/05 All. Initial release.

Contents

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

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

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

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

2.1.2 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Electromagnetic compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . . . . . . . . . . 4

2.4 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.0 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Media description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.4 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.5 Formatted capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.5.1 Programmable drive capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.6 Factory-installed accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.7 Factory-installed options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.8 User-installed accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.0 Performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 Internal drive characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Seek performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2.1 Access time [4]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2.2 Format command execution time (in minutes). . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.2.3 Generalized performance characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4 Prefetch/multi-segmented cache control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.5 Cache operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.5.1 Caching write data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.5.2 Prefetch operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5.3 Optimizing cache performance for desktop and server applications . . . . . . . . . 15

5.0 Reliability specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1 Error rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1.1 Recoverable Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1.2 Unrecoverable errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.3 Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.4 Interface errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2 Reliability and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.1 Annualized Failure Rate (AFR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.2 Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.3 Hot plugging the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.4 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.5 Thermal monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2.6 Drive Self Test (DST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.2.7 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

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6.0 Physical/electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.1 AC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.2 DC power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.2.1 Conducted noise immunity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.2.2 Power sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.2.3 Current profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.3 Power dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

6.4 Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.4.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.6 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.7 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.4.8 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

6.5 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

7.0 Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1 Drive internal defects/errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.3 FC-AL system errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.4 Background Media Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.4.1 Media Pre-Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.0 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.1 Drive ID/option selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.2 LED connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

8.2.1 J6 connector requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.3 Drive orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.4 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

8.5 Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8.6 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.0 Interface requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.1 FC-AL features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.1.1 Fibre Channel link service frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.1.2 Fibre Channel task management functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.1.3 Fibre Channel task management responses . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

9.1.4 Fibre Channel port login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

9.1.5 Fibre Channel port login accept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.1.6 Fibre Channel Process Login . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9.1.7 Fibre Channel Process Login Accept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.1.8 Fibre Channel fabric login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.1.9 Fibre Channel fabric accept login. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

9.1.10 Fibre Channel Arbitrated Loop options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.2 Dual port support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

9.3 SCSI commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

9.3.1 Inquiry data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

9.3.2 Mode Sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

9.4 Miscellaneous operating features and conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.5 FC-AL physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.5.1 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.5.2 Connector requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

9.5.3 Electrical description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

9.5.4 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

vi Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.5.5 FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.5.6 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.5.7 Fault LED Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9.5.8 Active LED Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.5.9 Enable port bypass signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.5.10 Motor start controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

9.5.11 SEL_6 through SEL_0 ID lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

9.5.12 Device control codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.6 Signal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.6.1 TTL input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.6.2 LED driver signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

9.6.3 Differential PECL output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

9.6.4 Differential PECL input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

10.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

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List of Figures

Figure 1. Cheetah 10K.7 FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Typical ST336807FC drive, 2 Gbit, +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 3. Typical ST336807FC drive, 2 Gbit, +5V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 4. ST336807FC DC current and power vs. input/output operations per second. . . . . . . . . 28

Figure 5. Location of the HDA Temperature check point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 6. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 7. Mounting configuration dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 8. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 9. LED indicator connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 10. Air flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 11. Physical interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 12. Port bypass circuit physical interconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Figure 13. FC-AL SCA device connector dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Figure 14. J6 connector dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 15. FC-AL transmitters and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Figure 16. Transmit eye diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8

Figure 17. Receive eye diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 9

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1.0 Scope

This manual describes Seagate Technology® LLC, Cheetah® 10K.7 FC 36GB (Fibre Channel) disc drives.

Cheetah 10K.7 FC drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifi-

cations to the extent desc ribed in this manual. The F ibre Channel Interface Ma nual (part number 77767496)

describes the gener al Fibre Channe l Arbitrated Loop char acteristics o f this and other Seagate Fibre Channel

drives.

Figure 1. Cheetah 10K.7 FC family disc drive

Cheetah 10K.7 36GB FC Product Manual, Rev. A 1

2 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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 host equ ipment to provide adequate power and envi ronment in order to achi eve opti-

mum performance and co mpliance with applicable indus try and governmental regulations. Special attention

must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regu-

lation. In particula r, the drive must b e s ecur el y mou nted i n o rde r to gua ra nte e th e s pe ci fie d p er formance char-

acteristics. Mounting by bottom holes must meet the requirements of Section 8.5.

2.1 Standards

The Cheetah 10K.7 FC family comp lies with Seagate standards as noted in th e appropriate sections of this

manual and the Seagate Fibre Channel Interface Manual, part number 77767496.

The Cheetah 10K.7 FC disc drive is a UL recognized component per UL1950, CSA certified to CAN/CSA

C22.2 No. 950-95, and VDE certified to VDE 0805 and EN60950.

2.1.1 Electromagnetic compatibility

The drive, as delivered , is designed for system integrati on and installation into a suitable encl osure prior to

use. As such the d rive is supplied as a subassembly and is not subject to Subpart B of Part 15 of the FCC

Rules and Regulation s nor the Radio Interference Reg ulations of the Canadian Departm ent of Communica-

tions.

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 Regula-

tions of the Canadian Department of Communications when properly packaged. However, it is the user’s

responsibility t o assure that the drive mee ts the appropriate EMI re quirements in their system. S hielded I/O

cables may be requir ed if the en closure do es not provi de adequate shieldi ng. If the I/O cab les are exte rnal to

the enclosure, shielded cables should be used, with the shields grounded to the enclosure and to the host con-

troller.

2.1.2 Electromagnetic susceptibility

As a component a ssembly, the drive is not requ ired to meet any susc eptibi lity perfor mance requ irements. It is

the responsibilit y of those integrating the dr iv e wit hin the ir s y ste ms to perform those tests req uire d a nd des ig n

their system to ensure th at equipment operating in the same sy stem as the drive or external to the syste m

does not adversely affect the performance of the drive. See Section Table 11, DC power requirements.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 3

2.2 Electromagnetic compliance

Seagate uses an inde pendent laborato ry to confirm comp liance with the directives/standa rds for CE Markin g and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include:

• Typical current use microprocessor

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

•Mouse Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee

that all systems will comply. The computer manufacturer or system 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 co mplies with the European Union requirements of the El ectromagnetic Compatibility Directive 89 /336/EEC of 03 May 1989 as amend ed by Dir ective 92 /31/ EEC of 28 Apri l 1992 an d Directive 93/68/EEC of 22 July 1993.

Australian C-Tick

If this model has th e C-Tick Marking it complies with the Austr alia/New Zeal and Standard AS/NZS3548 199 5 and meets the Electromagnet ic Compatibility (EMC) Framework requi rements of Australia’s Spectrum Management Agency (SMA).

Korean MIC

If this model has the Korean Ministry of Information and Communication (MIC) logo, it complies with paragraph 1 of Article 11 of the Electromagnetic Compatibility (EMC) Control Regulation and meets the Electroma gnetic Compatibility Framework requirements of the Radio Research Laborator y (RRL) Ministry of Information and Communication Republic of Korea.

Taiwanese BSMI

If this model has the Chinese National Standard (CNS) 13438 marking, it complies with Chinese National Standard (CNS) 13438 an d meets the Electromagnetic Compatibil ity (EMC) Framework requ irements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI).

2.3 European Union Restriction of Hazardous Substances (RoHS)

A new law, the European Union Restri ction of Hazardous Substances (RoHS) di rective, will res trict the pressence of chemical sub stances, includi ng Lead (Pb), in el ectronic pro ducts effective July 200 6. The directiv e’s requirements have not been finalized. This drive is manufactured with components and materials that are expected to comply with the RoHS directive when the directive takes effect.

4 Cheetah 10K.7 36GB FC Product Manual, Rev. A

2.4 Reference documents

Cheetah 10K.7 36GB FC Installation Guide Seagate part number: 100384023

Fibre Channel Interface Manual Seagate part number: 77767496

ANSI Fibre Channel Documents

X3.230-1994 FC Physical and Signaling Interface (FC-PH)

X3.297.1997 FC-PH-2 Fibre Channel Physical and Signaling Interface-2

X3.303.1998 FC-PH-3 Fibre Channel Physical and Signaling Interface-3

X3.272-1996 FC Arbitrated Loop (FC-AL)

X3.269-1996 Fibre Channel Protocol for SCSI (FCP)

NCITS TR-19 Private Loop SCSI Direct Attach (PLDA)

NCITS TR-20 Fabric Loop Attachment (FC-FLA)

SFF-8045 Specification for 40-pin SCA-2 Connector with Parallel Selection

SFF-8067 Specification for 40-pin SCA-2 Connector with

Bidirectional Encl os ur e Servi ce s Interfa ce

ANSI Small Computer System Interface (SCSI) Documents

X3.131-1994 (SCSI-2)

X3.270-1996 (SCSI-3) Architecture Model

NCITS 305-199X (SCSI-3) Enclosure Services

Specification for Acoustic Test

Requirement and Procedures Seagate part number: 30553-001

Package Test Specification Seagate P/N 30190-001 (under 100 lb.)

Package Test Specification Seagate P/N 30191-001 (over 100 lb.)

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

Cheetah 10K.7 36GB FC Product Manual, Rev. A 5

6 Cheetah 10K.7 36GB FC Product Manual, Rev. A

3.0 General description

Cheetah 10K.7 FC drives com bi ne gi ant m agn etores i stive (GMR) heads, partial respo nse/ma xi mu m li ke li hoo d

(PRML) read channel ele ctronics , embedded ser vo technolog y, and a Fibre Channel interface to pr ovide hig h

performance, high capac ity data storage f or a variety of systems including engineering wo rkstations, netwo rk

servers, mainframes, and supercomputers.

Cheetah 10K.7 FC drives supp ort the Fibre C hannel Ar bitrated Loo p (FC-AL) an d SCSI Fi bre Channel P roto-

col as described in the ANSI specifications, this document, and the Fibre Channel Interface Manual (part num-

ber 77767496) which describes the general interface characteristics of this drive. Cheetah 10K.7 FC drives are

classified as intellige nt peripherals and prov ide level 2 conformanc e (highest level) with the ANSI SCSI stan-

dard.

Never disassemble the HDA a nd do not at tempt to service ite ms in the sealed enclo su re (hea ds , m edi a, ac tu-

ator, etc.) as this requires special faci lities. The drive contains no parts replaceable by the user an d opening

the HDA for any reason voids your warranty.

Cheetah 10K.7 FC drives use a dedicated landing zone at the innermost radius of the media to eliminate the

possibility of d estroying or degrading d ata by landing in the data zone. The drive automatically goes to the

landing zone when power is removed.

An automatic shipping lock prevents potential damage to the heads and discs that results from movement dur-

ing shipping and handl in g. T he s hip pin g lo ck auto mat ic all y dis eng age s whe n powe r i s ap plied to the drive and

the head load process begins.

A high-performance ac tuator assembly with a low-inertia, balan ced, patented, straight arm design provides

excellent performance with min im al powe r diss ipation .

Cheetah 10K.7 36GB FC Product Manual, Rev. A 7

3.1 Standard features

Cheetah 10K.7 FC drives have the following standard featur es :

• Integrated dual port FC-AL controller

• Concurrent dual port transfers

• Support for FC arbitrated loop, private and public attachment

• Differential copper FC drivers and receivers

• Downloadable firmware using the FC-AL interface

• Supports SCSI enclosure services via interface connector

• 128-deep task set (queue)

• Supports up to 32 initiators

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

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

• User-selectable logical block size (any multiple of four bytes, 512 to 528 bytes per logical block)

• Selectable frame sizes from 256 to 2,112 bytes

• Industry standard 3.5-inch low profile form factor dimensions

• Programmable logical block reallocation scheme

• Flawed logical block reallocation at format time

• Programmable auto write and read reallocation

• Reed-Solomon error correction code

• Sealed head and disc assembly (HDA)

• No preventive maintenance or adjustments required

• Dedicated head landing zone

• Automatic shipping lock

• Embedded Grey Code track address and servo wedge 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

• 8,192 Kbyte data buffer. See Section 4.5.

• Drive Self Test (DST)

• BackGround Media Scan (BGMS)

• Data Integrity Check

•Power Save

• Embedded servo design

• Reallocation of defects on command (Post Format)

• Fibre Channel interface transports SCSI protocol

3.2 Media description

The media used on the drive has an alumi num sub st rat e co ated with a thin fi lm magn eti c mater ia l, over coate d with a proprietary protective layer for improved durability and environmental protection.

8 Cheetah 10K.7 36GB FC Product Manual, Rev. A

3.3 Performance

• Programmable multi-segmentable cache buffer

• 200 Mbytes/sec maximum instantaneous data transfers per port

• 10K RPM spindle; average latency = 3.0 msec

• Command queuing of up to 128 commands

• Background processing of queue

• Supports start and stop commands

3.4 Reliability

• Annualized Failure Rate (AFR) of 0.62%

• LSI circuitry

• Balanced low mass rotary voice coil actuator

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

• Dithering

3.5 Formatted capacities

Standard OEM models are formatted to 512 bytes per block. The sector size is selectable at format time. Users having the necessary equipm ent may mo dify the data block s ize before issuing a fo rmat comm and and obtain different formatted capacities than those listed.

For 2 gigabit operation, sector sizes must be divisible by 8. To provide a stable target capacity environment and at the same time provide users with flexibility if they

choose, Seagate recommends product planning in one of two modes:

1. Seagate designs specify capacity points at certain sector sizes that Seagate guarantees current and future products will meet. We recommend custo mers use this capacity in their project pl anning, as it ensures a stable operating point with bac kward and forwar d com patibility from gen eration to gener ation. The curren t guaranteed operating points for this product are:

ST336807FC

Sector Size

Decimal Hex

512 71,687,372 445DCCC 514 70,512,692 433F034 520 70,197,546 6C4CCA 522 69,731,801 42805D9 524 68,788,592 419A170

2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess capacity above the guaranteed level will vary between 10K and 15K families and from generation to generation, depending on how each sector si ze actually for mats out for zone frequencies an d splits over serv o bursts. This added capaci ty potent ial may range from 0.1 to 1.3 percent above th e guarant eed capacities listed above. Us ing th e dr ives in th is mann er gi ves the ab so lute m aximu m capacity poten tial, but the user must determine if the extra ca pacity potential is useful, or whether their assurance of backward and forward compatibility takes precedenc e.

3.5.1 Programmable drive capacity

Using the Mode Select command, the drive can change its capacity to something less than maximum. See the Mode Select Parameter List table in the SCSI Interface Product Manual. Refer to the Parameter list block descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not

Cheetah 10K.7 36GB FC Product Manual, Rev. A 9

change the capacity it i s currently forma tted to have. A number in the n umber of block s field that is less than the maximum numbe r of LBAs changes th e total driv e capacity t o the val ue in the block des criptor number of blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.

3.6 Factory-install ed accessories

OEM standard drives are shipped with the Cheetah 10K.7 36GB FC Installation Guide (part number

100384023).

3.7 Factory-install ed options

You may order the follow ing items which are incorpor ated at the manufacturing fa cility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options):

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

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

• The Cheetah 10K.7 36GB FC Installation Guide, part number 100384023, is usually included with each standard OEM drive shipped, but extra copies may be ordered.

• The Safety and Regulatory Agency Specifications, part number 75789 512, is usually included with each standard OEM drive shipped, but extra copies may be ordered.

3.8 User-installed accessories

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

• Evaluation kit, part number 73473644. This kit provides an adapter card (“T-card”) to allow cable connections for two FC ports and DC power.

• Single-unit shipping pack.

10 Cheetah 10K.7 36GB FC Product Manual, Rev. A

4.0 Performance characteristics

This section provides detailed information concerning performance-related characteristics and features of Cheetah 10K.7 FC drives.

4.1 Internal drive characteristics

ST336807FC

Drive capacity 36.8..................... ................................Gbytes (formatted, rounded off value)

Read/write data heads 1

Bytes per track 556...................... ................................Kbytes (average, rounded off values)

Bytes per surface 50.5..................... ................................Gbytes (unformatted, rounded off value)

Tracks per surface (total) 90,774................. ................................Tracks (user accessible)

Tracks per inch 105,000............... ................................TPI

Peak bits per inch 658...................... ................................KBPI

Internal data rate 470-944 .............. ................................Mbits/sec (variable with zone)

Disc rotation speed 10,000................. ................................rpm (+

Avg rotational latency 3.0....................... ................................msec

0.5%)

Cheetah 10K.7 36GB FC Product Manual, Rev. A 11

4.2 Seek performance characteristics

4.2.1 Access time [4]

Not including controller overhead (without disconnect) [1]

Drive level

Read Write

msec Average—Typical [2] 4.9 5.4 Single Track—Typical [2] 0.45 0.65 Full Stroke—Typical [2] 9.9 10.5

4.2.2 Format command execution time (in minutes)

ST336807FC

Maximum (with verify) Maximum (without veri fy )

4.2.3 Generalized performance characteristics

Minimum sector interleave 1 to 1

25 13

Data buffer transfer rate to/from disc media (one 512-byte sector):

ST336807FC

Minimum [3]* 59 MBytes/sec Maximum [3] 118 MBytes/sec

Sustainable disc transfer rate:

ST336807FC

Minimum [3]* 39 MBytes/sec Maximum [3] 80 MBytes/sec

Fibre Channel Interface maximum instantaneous transfer rate

1 GHz 2 GHz

106 Mbytes/sec* per port (dual port = 212 Mbytes/ sec*)

Note. 1 Megabyte (MB) = 1,000,000 bytes.

Sector Sizes

Default is 512-byte data blocks.

212 Mbytes/sec* per port (dual port = 424 Mbytes/sec*)

Logical block sizes

Default is 512-byte data blocks Variable 512 to 528 bytes per sector in a multiple of 4 bytes per sector

Read/write consecutive sectors on a track Yes

12 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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

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

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or

from the host.

Negligible

0.8 msec

1.2 msec (typical)

3.0 msec

Notes for Section 4.2.

[1] Execution time measured from receipt of the last byte of the Com mand Descriptor Block (CDB) to th e

request for a Status Byte Transfer to the Initiator (excluding connect/disconnect).

[2] Typi cal acc ess ti mes are meas ured under nomin al conditi ons o f tempe ratur e, voltage, and horiz ontal ori-

entation as measured on a representative sample of drives. [3] Assumes system ability to support the rates listed and no cable loss. [4] Access to data = access time + latency time.

4.3 Start/stop time

If the Motor Start option is disabled, the drive becomes ready within 25 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 25 seconds. Stop time is less than 30 seconds (maximum) from removal of DC power.

If the Motor Start option is enabled, the internal controller accep ts the commands listed in the Fibre Channel Interface Manual less than 3 s econds after DC power has been appli ed. After the Motor Start command has been received, the drive becomes ready for normal operations within 25 seconds (excluding the error recovery procedure). The Motor Start command can also be used to command the drive to stop the spindle.

There is no power control switch on the drive.

4.4 Prefetch/multi-segmented cache control

The drive provides a prefetch ( read look-ahead) and multi-se gmented cache control algori thms that in many cases can enhan ce system performance. Cac he refers to the drive buffer stor age space when it is used in cache operations . To sel ect this feature, th e host sends the Mode Sel ect command with the p roper values in the applicable bytes in page 08h. Prefetch and cache operations are independent features from the standpoint that each is enabled and dis abled indepe ndently using the Mode Select c ommand; however, in actual operation, the prefetch feature overlaps cache operation somewhat as described in sections 4.5.1 and 4.5.2.

All default cache and prefetch mode paramete r values (Mode Page 08 h) for standard OEM versions of this drive family are given in Table 25.

4.5 Cache operation

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

Of the 8,192 kbytes physical buffer space in the drive, 6,991 kbytes can be used as a cache. The buffer can be divided into logical segments (using Mode Select Page 08h, byte 13) from which data is read and to which data is written.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 13

The drive keeps track of the logical block addresses of the data stor ed in each segment of the buffer. If the cache is enabled (see RCD bit in the Fibre Chann el In ter fac e M anua l), data reque ste d by the ho st wi th a r ea d command is retrieved from the buffer, if possible, before any disc access is initiated. If ca che operation is not enabled, the buffer (still segm ented with the required number of segments) is still used, but only as ci rcular buffer segments during disc medium rea d operations (disregar ding Prefetch operation for the moment). That is, the drive does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The retrieved data merely passes through some buffer segment on the way to the host. O n a cache miss, all data transfers to the host are in accordance with buffer-full ratio rules. On a cache hit, the drive ignores the buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (disconnect/reconnect control) in the Fibre Channel Interface Manual.

The following is a simplified description of the prefetch/cache operation: Case A—read command is received and the first logical block is already in the cache:

1. Drive transfers to the initiator the first logical block requested plus all subsequent contiguous logical blocks that are already in the cache. This data may be in multiple segments.

2. When a requested log ical block i s reached that is not in an y cache se gment, the dri ve fetches it and any remaining requested lo gical b lock a ddres ses from th e disc and puts them in a seg ment o f the cache . The drive transfers the r emaining requested l ogical blocks from t he cache to the host in a ccordance with the Mode Select Disconnect/Reconnect parameters, page 02h.

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

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

1. The drive fetches th e requested logical blocks f rom the dis c and trans fers them into a se gment, and then from there to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.

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

During a prefetch, the drive cross es a cylinder boundary to fetc h data only if the Disco ntinui ty (DISC) bit is se t to 1 in bit 4 of byte 2 of the Mode Select parameters page 08h. Default is zero for bit 4.

Each cache se gment is actually a s elf-contained circula r buffer whose length is an integer number of logical blocks. The wrap-ar ound capability of the individual segm ents greatly enhances the cache’s overa ll performance, allowing a wide range of user-sele ctable configurations. The d rive supports operation of any integer number of segments from 1 to 32. D ivide the 6 ,877 Kbyt es in the b uffer by the numbe r of seg ments to get the segment size in bytes; then divide by the sector size to get the number of sectors per segment, any partial sectors remaining are not used. Default is 3 segments.

Note. The size of each segment is not reported by Mode Se nse command page 08h, bytes 14 and 15.

The value 0XFFFF is always reported regardless of the actual size of the segm ent . Se ndi ng a siz e specification using the Mode Select command (byt es 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 driv e respon ds 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 th at mak es use of a drive buffer sto ra ge area where the data to be written to the medium is stored while the drive performs the Write command.

If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future read cache h its. The same buffer space an d segme ntation is use d as set up for read functions . The buffer segmentation s cheme is set up or changed independently, having nothing to do with the state of RCD. When a write command is issued, i f RCD=0, the cache is first checke d to see if any logical blocks tha t are to be written are a lready stored in the cache f rom a previous read or write comman d. If there are, the respective cache segments are cleared. The new data is cached for subsequent Read commands.

14 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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

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

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

Table 25 shows the mode default settings for the drive.

4.5.2 Prefetch operation

If the Prefetch fea ture i s ena bl ed, data in co nti guo us lo gi cal b lock s on t he d is c immediately beyond tha t whi ch was requested by a Read c ommand are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequ ent Read com mands that request t hose logica l block s (this is tr ue even if cache operation is disabled). Though the prefetch operation uses the buffer as a cache, finding the requested data in the buffer is a prefetch hit, not a cache operation hit.

To ena ble Prefetch, use Mode S elect page 08h, byte 12, bit 5 (Disable Read Ahead—DRA bit). DRA bit = 0 enables prefetch.

Since data that is pr efetch ed r eplaces data alre ady in som e buffer s egmen ts, the ho st c an li mit the amou nt of prefetch data to optimize system per formance. The Max Prefetch field (bytes 8 and 9) limits the amount of prefetch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11).

During a prefetch operation, the drive cros ses a cylinder boundary to fetch more data only if Mode param ete rs page 08h, byte 2, bit 4 is set to 1 (Discontinuity—DISC bit).

When prefetch (read look -ahead) is enabled (enabled by DRA = 0), it opera tes under the control of ARLA (Adaptive Read Look-Ahead). If the host uses software interleave, ARLA enables prefetch of contiguous blocks from the disc when it senses that a prefetch hit will likely occur, even if two consecutive read operations were not for physically co ntiguous blocks of data (e.g. “software interleave ”). ARLA disables pr efetch when it decides that a prefetch hit will not likely occur. If the host is not using software interleave, and if two sequential read operations are no t for c ontigu ous bloc ks of data, ARLA d isables prefetc h, but as long as se quentia l read operations request contiguous blocks of data, ARLA keeps prefetch enabled.

4.5.3 Optimizing cache performance for desktop and server applications

Desktop and server applications require different drive caching operations for optimal performance. This means it is difficult to provide a single configuration that meets both of these needs. In a desktop environment, you want to con figure the cache to respond q uickly to repetitive ac cesses of multiple s mall segmen ts of data without taking the time to “look ahea d” to the next conti guous segmen ts of data. In a server environ ment, you want to configure the cac he to provide large volumes of seque ntial data in a non-repetitive manner. In this case, the ability of the cache to “look ahead” to the next contiguous segmen ts of sequential data is a good thing.

The Performance Mode (PM) bit contr ols the way the drive switches the cache buffer into different modes o f segmentation. In “server mode” (PM bit = 0), the drive can dynamically cha nge the number of cache buffer segments as needed to opt imize the performa nce, based on the command st ream from the hos t. In “desktop mode” (PM bit = 1), the number of segments is maintained at the value defined in Mode Page 8, Byte 13, at all times. For additio nal information about the PM bit , refer to the Unit Attention Parame ters page (00h) of the Mode Sense command (1Ah) in the Fibre Channel Interface Product Manual, part number 77767496.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 15

16 Cheetah 10K.7 36GB FC Product Manual, Rev. A

5.0 Reliability specifications

The following reli ability specifica tions assume co rrect host and drive operational interfa ce, including al l interface timings, power supply voltages, environmental requirements and drive mounting constraints

Seek error rate Less than 10 errors in 10 Read Error Rates

Recovered Data Less than 10 errors in 10 Unrecovered Data Less than 1 sector in 10 Miscorrected Data Less than 1 sector in 10

Interface error rate Less than 1 error in 10

Less than 1 error in 10

(see Section 9.6.4, "Differential PECL input." on page 68) AFR 0.62% Service life 5 years Preventive maintenance None required

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

5.1 Error rates

seeks

bits transferred (OEM default settings)

bits transferred

bits transferred with minimum receive eye

bits transferred with typical receive eye

The error rates stated in this manual assume the following:

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

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

• Assume random data.

• Default OEM error r ecovery settings are applied. Thi s includes AWRE, ARRE, full read retries, fu ll write retries and full retry time.

5.1.1 Recoverable Errors

Recovereable errors are those detected and corrected by the drive, and do not require user intervention. Recoverable Data errors will use co rrection, although ECC on -the-fly is not considered for purposes of recov-

ered error specifica tio ns. Recovered Data error rate is determine d using read bits transfer red for recove rable errors occurring dur ing a

read, and using write bits transferred for recoverable errors occurring during a write.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 17

5.1.2 Unrecoverable errors

Unrecoverable Data Errors (Sense Ke y = 03h) are s pecified at les s than 1 sect or in error per 10

bits trans-

ferred. Unrecoverable Data Errors resulting from the same cause are treated are 1 error for that block.

5.1.3 Seek errors

A seek error is defined as a fail ur e of the dr i ve to pos it ion the heads to the addressed t rack . After dete cti ng a n initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will be reporte d with a Hardware error (04h) in t he Sense Key. Recoverable seek errors are specified at Less than 10 er rors in 10

seeks. Unre covera ble se ek erro rs

(Sense Key = 04h) are classified as drive failures.

5.1.4 Interface errors

An interface error is defin ed as a failure of the receiver on a port to recover the d ata as transmitted by the device port connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC error. The total error rate for a loop o f devices is the sum of the individu al device error rates.

5.2 Reliability and service

You can enhance the r eliability of Cheetah 10K.7 SCS I disc drives by ensuring that the drive receives a dequate cooling. S ection 6.0 provides temperature measurements and other informa tion that may be used to enhance the service life of the drive. Section 8.3 provides recommended air-flow information.

5.2.1 Annualized Failure Rate (AFR)

The production disc dr ive shall achieve an AFR of 0.62% when oper ated in an environm ent that ensures th e HDA case temperatur es spec ified in Sectio n 6. 4 are not exce eded. S hort -term ex cursi ons u p to th e spec ification limits of the operating e nvironment will not affect AFR perfor mance. Continual or sustained operation at case temperatures above the values shown in Section 6.4.1 may degrade product reliability.

Estimated power-on operation hours means power-up hours per disc drive times the total number of disc drives in service. Ea ch dis c drive shall h ave accu mulate d at le ast nine months of operatio n. Data sha ll be ca lculated on a rolling average base for a minimum period of six months.

AFR is based on the following assumption s:

• 8,760 power-on hours per year.

• 250 average on/off cycles per year.

• Operations at nominal voltages.

• Systems will prov ide adequate coolin g to ensure the case temperatures specified in Sec tion 6.4.1 are not exceeded.

Drive failure means any stoppage or substandard performance caused by drive malfunction. A S.M.A.R.T. predictive failure indic ates that the drive i s deterior ating to an immin ent failu re and is co nside red

an AFR hit.

5.2.2 Preventive maintenance

No routine scheduled preventive maintenance is required.

18 Cheetah 10K.7 36GB FC Product Manual, Rev. A

5.2.3 Hot plugging the drive

Inserting and removin g the drive on the FC-AL will i nterrupt loop o peration. T he interrupti on occurs when th e receiver of the nex t device in t he loop mus t synchro nize to a differen t input si gnal. FC e rror detecti on mechanisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recovery is initiated based on the type of error.

The disc drive defau lts to the FC- AL Mo nitoring state, Pas s-thro ugh state, w hen it is powe red- on by swi tchin g the power or hot plugg ed. The cont rol line to an optiona l port bypass c ircuit (exte rnal to th e drive), def aults 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 responsibili ty o f the sy s tems in teg ra tor to a ss ur e th at no tem per atu re, en ergy, voltage haz-

ard, or ESD potential haza rd is presented dur ing the hot connect/di sconnect oper ation. Discharge the static electricity from the drive carrier prior to inserting it into the system.

Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is

required to insure data integrity.

5.2.4 S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Mon itoring Ana lysis and Re porting Technology. Thi s technology is intende d to recognize conditio ns that indicate imminent drive failure and is des igned to provide sufficient warn ing of a failure to allow you to back up the data before an actual failure occurs.

Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instanta-

neous drive failures.

Each monitored a ttrib ute has b een sele cted to moni tor a specifi c se t of fai lure c onditi ons in th e oper ating performance of the drive and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page (1Ch). Use th e DEXCPT bit to ena ble or disab le the S.M. A.R.T. feature. Setting th e 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 write operations. When the PERF bit is set, the drive is consi dered to be in “On-line Mod e Only” and will not perform off-line functions.

You can measure off-line attr ibutes and for ce the drive to sa ve the data by usi ng the Rezero Uni t 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 c ontrol when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. w ith the RTZ command resets the timer.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 19

Performance impact

S.M.A.R.T. attribute data is saved to the disc so that the events that ca used a predictive fai lure can be recr eated. The drive measures and sav es paramete rs once ever y two hours su bject to an id le period on the FC-A L bus. The process o f meas uring off-l ine att ribute da ta and saving data to the di sc is uninte rruptable. The max imum on-line only processing delay is summarized below:

Maximum processing delay

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

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

60 milliseconds

Fully-enabled delay DEXCPT = 0, PERF = 0

370

milliseconds

Reporting control

Reporting is controlled by the MRIE bits in the Inform ational Exceptio ns Control mode page (1Ch). Subject to the reporting metho d, t he firmw are w ill is sue to the h ost a n 0 1-5Dxx sense code. The error code is pr eserve d through bus resets and power cycles.

Determining rate

S.M.A.R.T . monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to an unacceptable level. To determine rate, error events are logged and compared to the number of total operations for a given attribu te. The in terval de fine s the numb er of operati ons over which to mea sure the rate. The counter that keeps track of the current number of operations is referred to as the Interval Counter.

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

Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the number of errors an d their inte rval. If the nu mber of error s exceed s the thr eshold bef ore the interval expires, the error rate i s considered to be unacc eptable. 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 predictive failures when the drive is performi ng unacc eptably for a peri od of time. The fir mware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a cou nter is i ncremen ted each time the error rat e is un acceptable and decr emented (not to e xceed zero) whenever t he error ra te is a cceptabl e. If the co unter contin ually in crem ents such that it reache s the pr edictive threshol d, a predictive failure is signaled. This counter is r eferred to as the Failure H istory Counter. There is a separate Failure History Counter for each attribute.

5.2.5 Thermal monitor

Cheetah 10K.7 SCSI drives implement a temperature warning system which:

1. Signals the host if the temperature exceeds a value which would threaten the drive.

2. Signals the host if the temperature exceeds a user-specified value.

3. Saves a S.M.A.R.T. data frame on the drive which exceed the threatening temperature value.

A temperature sensor monito rs the drive temperature and is sues a warning over the int erface when the temperature exceeds a s et threshol d. The temper ature is measured at power-up an d then at te n-minute intervals after power-up.

20 Cheetah 10K.7 36GB FC Product Manual, Rev. A

The thermal monitor syste m generates a wa rning code of 01- 0B01 when the temp erature exceed s the specified limit in compl iance with the SCSI standard. T he drive temperature is repo rted in the FRU code field o f mode sense data. You can use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the user-specified temperature.

This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is controlled by the Method of Reporting Informational Exceptions field (MRIE) on the Informational Exceptions Control (IEC) mode page (1Ch).

The current algorithm impl ements two temperature trip points. The first trip point is set at 68°C which is the maximum temperatur e limit a ccordi ng to th e dri ve spec ific ation. T he secon d trip point is us er-se lectable using the Log Select command. The reference temperature parameter in the temperature log page (see Table 1) can be used to set this trip point. The default value for this drive is 68°C, however, you can set it to any value in the range of 0 to 68°C. If you specify a temperature g reater than 68°C in this fi eld, the temperature is rou nded down to 68°C. A sense code is sent to the host to indicate the rounding of the parameter field.

Table 1: Temperature Log page (0Dh)

Parameter Code Description

0000h Primary Temperature 0001h Reference Temperature

When the first temperature trip point is exceeded, S.M.A.R.T. data is collected and a frame is saved to the disc.

5.2.6 Drive Self Test (DST)

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

There are two test coverage options implemented in DST:

1. Extended test

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

block address (LBA ) of the drive. The s hort test is time-r estricted and limited i n length—it does n ot scan the entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an er ror during either of these tests, i t reports a fault condition. If the dr ive fails the test, remove it from service and return it to Seagate for service.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 21

5.2.6.1 DST Failure Definition

The drive will presen t a “diagnostic failed” con dition through the self-te sts results value of the diagnos tic log page if a functional failur e is enco untered du ring DST. The channel and servo parameters are not mod ified to test the drive more strin gently, and the number of retries are not redu ced. All retries and recovery proce sses are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.

The following conditions are considered DST failure conditions:

• Seek error after retries are exhausted

• Track-follow error after retries are exhausted

• Read error after retries are exhausted

• Write error after retries are exhausted

Recovered errors will not be reported as diagnostic failures.

5.2.6.2 Implementation

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

5.2.6.2.1 State of the drive prior to testing

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

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

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

• Motor will not spin

• Motor will not lock to speed

• Servo will not lock on track

• Drive cannot read configuration tables from the disc

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

5.2.6.2.2 Invoking DST

To in voke DST, submit the Send Diagnostic comman d with the ap propriate Fun ction Code (001b for the short test or 010b for the extende d test) in bytes 1, bits 5, 6, and 7. Ref er to the Fibre Channel Interf ace Product Manual, part number 77767496, for additional information about invoking DST.

5.2.6.2.3 Short and extended tests

DST has two testing options:

1. short

2. extended

These testing options are described in the following two subsections. Each test consists of th ree s egm ents: a n el ec tric al test segm ent, a servo test segment , and a rea d/v er ify s ca n

segment.

22 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Short test (Function Code: 001b)

The purpose of the short test is to provide a time-l imit ed te st tha t t e sts as m uch of the drive as possible within 120 seconds. The shor t test does not scan the entire me dia surface, but does some funda mental tests and scans portions of the media. A complete read/verify scan is not performed and only factual failures will report a fault condition. This option provides a quick confidence test of the drive.

Extended test (Function Code: 010b)

The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-track operations tes t the pos it ion ing mec han ism. T he read operation tests the read head element and the media surface. The write element is tested throu gh read/write/read operations. The inte grity of the media is checked through a r ead/verif y scan of the med ia. Motor functio nality is tested by d efault as a part of these tests.

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

5.2.6.2.4 Log page entries

When the drive begi ns DST, it creates a new entry in the Self -te st Resul ts Log page . The new entr y is c reated by inserting a new self-test parameter block at the beginning of the self-test results log parameter section of the log page. Existing da ta will be moved to make room f or the new parameter block. The dr iv e rep or ts 20 par ameter blocks in the log page. If there are more than 20 parameter blocks, the least recent parameter block will be deleted. The new parameter block will be initialized as follows:

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

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

3. The drive will store the log page to non-volatile memory After a self-test is complete or has been aborted, the dr i ve upda tes the Sel f- Test Results Val ue fiel d in its Se lf-

Test Results L og pa ge in n on- v ola til e m emo ry. The host may use Log Sense to read the results from up to th e last 20 self-tests performed by the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is zero, the drive passed with no erro rs detected by the DST. If the field is not zero, the test failed for the reason reported in the field.

The drive will report th e failure condition and LBA (i f applicable) in the Self-tes t Results Log parameter. The Sense key, ASC, ASCQ, and FRU are used to report the failure condition.

5.2.6.2.5 Abort

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

You can abort a DST executing in backgrou nd mode by us ing the abor t code in the DS T Functio n Code field . This will cause a 01 ( self-test aborted b y the application cl ient) code to appear i n the self-test results v alues log. All other abort mechanisms will be reported as a 02 (self-test routine was interrupted by a reset condition).

5.2.7 Product warranty

Beginning on the date of shi pm ent to the cu stomer and continuing for a per i od of five years, Seagate warrants that each product (inclu ding componen ts and subassemb lies) that fails to fu nction prope rly under normal use due to defect in materials or workmanship or due to noncon formance to the applicable spec ifications will be repaired or replaced, at Seag ate’s option and at no charge to the customer, if returned by customer at customer’s expens e to Seagate’s designated faci lity in accordance wit h Seagate’s warranty proced ure. Seagate will pay for transporting the repair or replacement item to the customer. For more detailed warranty information, refer to the standard te rms and conditio ns of purchase fo r Seagate produc ts. Refer to Section 1 0 for contact information.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 23

Shipping

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

Seagate repair center s may refuse receipt of co mponents improperly packaged or obviously da mag ed in tr ansit. Contact your au thorized S eagate dist ributor to purchas e additio nal boxe s. Seagat e recom mends sh ipping by an air-ride carrier experienced in handling computer equipment.

Product repair and return information

Seagate customer se rvice centers are th e only facilities au thorized to service Sea gate drives. Seagate d oes not sanction any third-party repair fac ilities. Any unauthorized repair or tamper ing with the factory seal voids the warranty.

24 Cheetah 10K.7 36GB FC Product Manual, Rev. A

6.0 Physical/electrical spe cifications

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 requi rements for a single drive are shown below. Values indicated apply at the drive connector.

Table 11:

Voltage +5V +12V [2] +5V +12V [2] Regulation [5] ±5% ±5% [2] ±5% ±5% [2] Avg idle current DC X [1] [7] Maximum starting current

(peak DC) DC 3σ [3]

(peak AC) AC 3σ [3] Delayed motor start (max) DC 3σ [1] [4] Peak operating current: Typical DC X [1] [6] Maximum DC 3σ [1] Maximum (peak) DC 3σ

ST336807FC DC power requirements

ST336807FC 1 Gbit 2 Gbit

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

0.86 0.34 0.92 0.34

1.02 1.58 1.08 1.57

1.18 3.48 1.50 3.57

0.60 0.09 0.62 0.09

0.93 0.77 0.99 0.80

0.94 0.78 1.00 0.81

1.78 2.44 1.86 2.50

[1] Measured with average reading DC ammeter. Instantaneous +12V curren t peaks will excee d these val-

ues. Power supply at nominal voltage. Number of drives tested = 6, 35 Degrees C ambient.

[2] For +12 V, a –10 % tol er an ce is allowed during initi al sp in dle s tart but must return to ±5% before reaching

10,000 RPM. The ±5% must be maintained after the drive signifi es that its power-up seq uence has bee n

completed and that the drive is able to accept selection by the host initiator.

[3] See +12V current profile in Figure 2. [4] This condition occurs when the M otor Start option is enabled and the driv e has not yet receiv ed a Start

Motor command.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 25

[5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and

transient response.

[6] Operating condition is defined as random 8 block reads at 254 I/Os per second.

Current and power sp ecified at no minal voltages . Decreasi ng +5 volt s upply by 5 % increase s 5 volt cur rent by <0.5%. Decreasing +12 volt supply by 5% increases 12 volt current by 1.4%.

[7] During idle, the drive heads are relocated every 60 seconds to a random l ocation within the ban d from

track zero to one-fourth of maximum track.

General DC power requirement notes.

1. Minimum current l oading fo r each sup ply voltage is not les s than 1. 2% of the ma ximum o perating 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 requirem ents s hou ld b e no ted. Whe re mul ti ple uni ts are pow er ed o n s imu ltaneou sl y, the peak starting current must be available to each device.

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

5. No terminator power.

6.2.1 Conducted noise immunity

Noise is specified a s a periodic an d random distri bution of frequenc ies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak to peak measurements and apply at the drive power connector.

+5 V = 250 mV pp from 100 Hz to 20 MHz.

+12 V = 800 mV pp from 100 Hz to 8 KHz.

450 mV pp from 8 KHz to 20 KHz. 250 mV pp from 20 KHz to 5 MHz.

6.2.2 Power sequencing

The drive does not require power sequenci ng. The drive prote cts against inadver tent writing dur ing power-up and down.

26 Cheetah 10K.7 36GB FC Product Manual, Rev. A

6.2.3 Current profiles

Figures 2 and 3 identify the drive current profiles. The current during the various times is as shown:

Note: All times and currents are typical. See Table 11 for maximum current requiremST336807FC

Figure 2. Typical ST336807FC drive, 2 Gbit, +12V current profile

Figure 3. Typical ST336807FC drive, 2 Gbit, +5V current profile

Cheetah 10K.7 36GB FC Product Manual, Rev. A 27

6.3 Power dissipation

ST336807FC

Typical power dissipation under idle conditions is 8.38 watts (28.60 BTUs per hour) during 1 Gbit operation. Typical power dissipation under idle conditions is 8.68 watts (29.62 BTUs per hour) during 2 Gbit operation.

To obtain operati ng power for typical random read opera tions, refer to the follo wing I/O rate curve (see Figure

4). Locate the typica l I/O rate for a drive i n your syst em on the h orizontal axis and read th e correspond ing +5

volt current, +12 vol t c ur rent, and tota l wa tts on the v er ti cal a xi s. To calculate BTUs per hour, multiply watts by

3.4123.

ST373207FC DC CURRENT/POWER vs THROUGHPUT (1Gb ) Random 8 Block Reads

1.8 00

1.6 00

1.4 00

1.2 00

18 .00

16 .00

14 .00

12 .00

5Volt A 12 Vo l t A Watts

Power (watts)

1.0 00

0.800

Amperes

0.600

0.400

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300.0

I/Os per Second

ST373207FC DC CURRENT/POWER vs THROUGHPUT (2Gb) Random 8 Block Re ad s

1.800

1.600

1.400

1.200

1.000

0.800

Amperes

0.600

0.400

10 .00

8.00

6.00

4.00

2.00

0.00

18 .00

16 .00

14 .00

12 .00

10 .00

8.00

6.00

4.00

5Volt A 12 V o lt A Watts

Power (watts)

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300.0

I/Os per Second

Figure 4. ST336807FC DC current and power vs. input/output operations per second

28 Cheetah 10K.7 36GB FC Product Manual, Rev. A

2.00

0.00

6.4 Environmental limits

Tempe ratur e an d hum idi ty val ues ex per i enced by the drive mus t be suc h that c ond ens ation does not oc c ur on any drive part. Altitude and atmospheric pressu re specifications are refer enced 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 maximum allowable continuous or sustained HDA case temperature for the rated AFR is 122°F (50°C) The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to specified AFR. Continual or sustained operation at HDA case temperatures outside these limits may degrade AFR.

Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C) drive ambient temperatu re range with a maximum temper ature gradient of 36°F (20°C) per hour. Air flow may be needed in the drive enclosure to keep within this range (see Section 8.3). Operation at HDA case temperatures outside this range may adversely affect the drives ability to meet specifications. To confirm that the require d cooling for the electronic s and HDA case is provided, pla ce the drive in its final mechanical configurat ion, perform random write/read operatio ns and measure the HDA cas e temperature after it has stabilized.

b. Non-operating

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

DA Temp. heck Point

Figure 5. Location of the HDA Temperature check point

1.0"

.5"

6.4.2 Relative humidity

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

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

b. Non-operating

5% to 95% non-condensing relative humidity.

6.4.3 Effective altitude (sea level)

a. Operating

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

b. Non-operating

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

Cheetah 10K.7 36GB FC Product Manual, Rev. A 29

6.4.4 Shock and vibration

Shock and vibration lim its specifie d in this docum ent are measur ed directl y on the driv e chassis . If the drive is installed in an e nclosure to which the stated shock and/or vib ration cr iteria is applied, res onances m ay 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 vibr ation define d within this doc ument are spec ified with the d rive mounted by any of the four methods shown in F igure 6, and in acc ordance with t he restrictions of Section 8.5. O rientation of the side nearest the LED may be up or down.

6.4.4.1 Shock

a. Operating—normal

The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 15 Gs at a maximum duration of 11 msec (half sinewave). The drive, as ins talled for normal operation, shall operate error free while subjected to intermittent shock not exceeding 60 Gs at a maximum duration of 2 msec (half sinewave). Shock may be applied in the X, Y, or Z axis.

b. Operating—abnormal

Equipment, as installed for norma l operation, does not incu r physical damage while subjected to intermittent shock not exce eding 40 Gs at a maximum duratio n of 11 msec (half sinewave). Shock oc curring at abnormal levels may promote degraded operational performance during the abnormal shock period. Specified operational performance will continue when normal operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than two times per second.

c. Non-operating

The limits of non-operating shock shall apply to all c onditions of handl ing and transpo rtation. This inc ludes both isolated drives and integrated drives.

The drive subjected to nonrepetitive sh ock not exceeding 7 5 Gs at a maximu m duration of 11 msec (half sinewave) shall n ot exh ibit dev ice d amage or pe rformanc e deg radation . Sh ock may be ap plied in the X, Y, or Z axis.

The drive subjected to no nrepetitive shock not ex ceeding 225 Gs at a maximu m duration of 2 msec (hal f sinewave) does not exhibi t device dam age or pe rforman ce degr adati on. Shock m ay be appl ied in th e X, Y, or Z axis.

The drive subjected to non repetiti ve shock not excee ding 120 Gs at a ma ximu m duration of 0.5 mse c (half sinewave) does not exhibi t device dam age or pe rforman ce degr adati on. Shock m ay be appl ied in th e X, Y, or Z axis.

d. Packaged

Disc drives shipped as loose load (no t palletized) g eneral frei ght will b e packaged to w ithstand drops f rom heights as defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or 30191-001 (over 100 lbs/45 Kg).

Package size Packaged/product weight Drop height

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

Drives packaged in single or mul tipacks with a gross weight o f 20 pounds (8.95 k g) or less by Se agate for general freight ship ment shal l withstand a drop t est from 48 inches (1, 070 mm) aga inst a co ncrete floor or equivalent.

30 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Y X

Figure 6. Recommended mounting

Cheetah 10K.7 36GB FC Product Manual, Rev. A 31

6.4.4.2 Vibration

a. Operating - normal

The drive as installed for normal ope ration, shall comply with the complete specif ied performance while subjected to continuous vibration not exceeding

5-500 Hz @ 1.0 G (zero to peak) Vibration may be applied in the X, Y, or Z axis. Operating normal translational random flat profile 10 - 400 Hz 0.5 GRMS (grams root mean square)

b. Operating - abnormal

Equipment as installed for normal operation shall not in cur physical damage while subj ected to periodic vibration not exceeding:

15 minutes of duration at major resonant frequency

5-500 Hz @ 1.5 G (X, Y, or Z axis) Vibration occurring at these levels may degrade operational performance during the abnormal vibration

period. Specified operational performance will continue when normal operating vibration levels are resumed. This assumes system recovery routines are available.

Operating abnormal translational random flat profile 10 - 400 Hz 1.2 GRMS (grams root mean square)

c. Non-operating

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

The drive shall not i ncur ph ysi cal damag e or d egrad ed perfor manc e as a result of con tinuous vibra tion no t exceeding

5-22 Hz @ 0.040 inches (1.02 mm) displacement (zero to peak)

22-500 Hz @ 3.00 G Vibration may be applied in the X, Y, or Z axis. Non-operating translational random flat profile 10 - 400 Hz 1.2 GRMS (grams root mean square)

6.4.5 Air cleanliness

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

6.4.6 Corrosive environment

Seagate electronic driv e components pass accelerated cor rosion testing equivalent to 10 years exposure to light industrial envir onments containi ng sulfuro us gases, chlorine an d nitric oxide , classes G and H per ASTM B845. However, this accelerated testing cannot duplicate every potential application environment.

Users should use cauti on exposing any ele ctronic compo nents to uncontrolled c hemical pollutan ts and corrosive chemicals as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold films us ed in Sea gate produc ts are especi ally sensitiv e to the presen ce of sulfide , chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be ex pose d to c ondensin g water on the surfac e of th e pri nted cir cuit bo ard a ssembly (PCBA ) or exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulcanized rubber, that can outgas corros ive compounds should be m inimized or e liminated. The us eful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.

32 Cheetah 10K.7 36GB FC Product Manual, Rev. A

6.4.7 Acoustics

Sound power during idle mode shall be 3.3 bels typic al, or bette r, when measured to ISO 777 9 specifi cation. There will not be any discrete tones more than 10 dB above the masking nois e on typical drives when measured according to Sea gate specificat ion 30553-001 . There will not be a ny tones more than 24 dB above the masking noise on any drive.

6.4.8 Electromagnetic susceptibility

See Section 2.1.2.

6.5 Mechanical specifications

The following nominal di men sion s ar e exc lusiv e of the dec or at iv e front panel acces s ory. However, dimensions of the front panel are shown in figure below. Refer to Figure 7 for detailed mounting configu ratio n dimens ions. See Section 8.5, “Drive mounting.”

Height: 1.000 in 25.4 mm Width: 4.000 in 101.6 mm Depth: 5.75 in 146.05 mm Weight: 1.6 pounds 0.726 kilograms

Cheetah 10K.7 36GB FC Product Manual, Rev. A 33

-Z-T//

-X-U

-Z-

[1]

-Z-

-X-N

[1]

-X-

Notes:

Mounting holes are 6-32 UNC 2B, three

[1]

on each side and four on the bottom. Max screw penetration into side of drive is 0.15 in. (3.81 mm). Max screw tightening torque is 6.0 in-lb (3.32 nm) with minimum full thread engagement of

0.12 in. (3.05 mm).

Dimension Table

Inches

1.028

A B C D E F H

J K L

M N

S T

5.787

4.000

3.750

0.125

1.750

1.122

4.000

0.250

1.638

0.181 .015

1.625

1.469

0.276 .015 .015

max max ± .010 ± .010 ± .010 ± .010 ± .020 ± .010 ± .010 ± .010 ± .020 max ± .020 ± .020 ± .040 max max

Millimeters

26.10

147.00

101.60

95.25

3.18

44.45

28.50

101.60

6.35

41.60

4.60 .038

41.28

37.31

7.00

0.38

max max ± .25 ± .25 ± .25 ± .25 ± .50 ± .25 ± .25 ± .25 ± .50 max ± .50 ± .50 ± 1.02 max max

Figure 7. Mounting configuration dimension s

34 Cheetah 10K.7 36GB FC Product Manual, Rev. A

7.0 Defect and error management

The drive, as deli ve re d, c om pl ies w ith thi s pr odu ct ma nual. The read erro r ra tes an d s pe cif ied storage capacities are not dependent upon use of defect management routines by the host (initiator).

Defect and error managem ent in the SCSI protocol involves the drive internal defect/error m anagement and FC-AL system error con siderations (errors in communicatio ns between the initiator and the drive). Tools for use in designing a defect/er ror manag ement pla n are brie fly outli ned in th is sectio n. Referen ces to o ther se ctions are provided when necessary.

7.1 Drive internal defects/errors

During the initial drive format operation at the factor y, media defects are identified, tagged as being unusable , and their locations recorded on the dr ive primary defects lis t (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 lo cation listed in the defects reallocat ion table. The “P” list is n ot altered after factory formatting. Locations of defects found and reallocated duri ng error recovery p rocedures after drive shipment are listed in the “G” list (d efects growth list) . The “P” and “G ” lists may be refe renced by the in itiator u sing the Read Defect Data command.

Details of the SCSI commands s upported by the drive are described in the Fibre Channel Interface Manual. Also, more informatio n on the drive Error Recovery philosophy is pres ented in the Fibre Channel Interface Manual.

7.2 Drive error recovery procedures

When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to recover the data. The error recovery procedures used depend on the options previously set in the Error Recovery Par am ete rs mod e page. E rror rec ov ery an d def ec t man agem ent may involve using se veral SCSI commands d escr ibed in the Fibr e Chann el Interfa ce Man ual. The d rive im ple ments selec table error recovery time limits required in video applications.

The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire command in addi tion to c ontr o ll ing the re co ve ry le ve l for a singl e LB A. T he total amount of time spent in error recovery for a comm and c an be li mited using the Recovery Time Limit bytes in the E rror Rec ov ery mod e page. The total amount of time spent in e rror recovery for a single LBA can be limited using the Re ad Retry Count or Write Retry Count bytes in the Error Recovery mode page.

The drive firmware erro r recov ery al gorithms consi sts of 12 lev els f or read recover ies and five level s for write . Each level may consis t of multip le steps, where a step is define d as a recove ry function involv ing a si ngle reread or re-write at temp t. Th e maximum level used by the drive in LBA rec ov ery i s dete rmin ed by the r ead an d write retry counts.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 35

Table 12 equates the re ad and write retry count with the m aximum possible recovery time f or read and write recovery of individua l LBAs . The time s give n do not inc lude time taken to pe rform realloc ations . Realloc ations 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.

When the RC bit is on e, reall ocatio ns are d isabled even i f the AR RE or AWRE bits are one. The d rive wi ll still perform data recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive does not report any unrecovered errors.

Table 12: Read and write retry count maximum recovery times

Read retry

count

0 77.7 0 35.9 1 89.7 1 53.8 2 305.0 2 83.7 3 352.8 3 101.7 4 400.7 4 179.4 5 418.6 5 424.6 (default) 6 466.4 7 586.0 8 675.7 9 723.5 10 777.3 11 1,064.4 12 1,877.66 (default)

Maximum recovery time per LBA (cumulative, msec)

Write retry

count

Maximum recovery time per LBA (cumulative, msec)

[1] These values are subject to change.

Setting these ret ry counts to a value be low the default se tting could result in an increased un recovered error rate which may exceed the value g iven in thi s product man ual. A s etting of zero (0) wil l result in th e drive not performing error recovery.

For example, suppose the Rea d/Write Recovery page has the R C bit set to 0, read retry c ount set to 4, and the recovery ti me li mit fiel d (Mode Se nse page 01, bytes 10 a nd 11) set to FF FF hex (m aximu m). A four LBA Read command i s allowed to take up to 400.7 m sec rec overy time for each of the four LBAs in the command. If the recovery time limit is set to 00 C8 hex (200 msec decimal) a four LBA read command is allowed to take up to 2 00 msec for all error rec overy within that command. T he use of the Recovery Time Limit field allows finer gra nularity on control o f the time spent in error recovery. The recovery time limit only starts counting when the drive is executing error re covery and it restarts on each command . Therefore, each command’s total recovery time is subject to the recovery time limit. Note: A recovery time limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01.

36 Cheetah 10K.7 36GB FC Product Manual, Rev. A

7.3 FC-AL system errors

Information on the reporting of operational errors or faul ts across the interface is given in the Fibre Cha nnel Interface Manual. The FCP Resp ons e retur ns info rm ati on to the ho st abo ut num erous ki nds of errors or fau lts.

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.

7.4 Background Media Scan

Background Media Scan (BG MS) is a self-i nitiated medi a scan. It performs seq uential rea ds across the entir e pack of the media while the drive is idle. In RAID arrays, BGMS allows hot spare drives to be scanned for defects prior to being put into service by the host system. On regualr duty drives, if the host system makes use of the BGMS Log Page, it can avoid placing data in sus pect locations on the med ia. Unrecovered er ror sites found during BGMS will be logge d and recovered error sites will be logged or reallocated per ARRE/AWRE settings.

With BGMS, the host syst em can consume less power and system overhea d by only checking BGM S status/ results rather than tying up the bus and consuming power in the process of host-initiated media scanning activity.

Since the background scan functions are only done during idl e periods, BGMS caus es a negligible impact to system performance. Background media scan will begin after 500ms of idle time. Other features that normally use idle time t o function will function norma lly because BGMS fun ctions for bursts of 800ms and then suspends activity to allow other background functions to operate. Additionally , BGMS operates in segments of 400 block reads, checking for host commands upon completion of each of the block segments.

The BGMS function will compl ete any BGM S-initiate d error reco very prior to returning to ser vice host- initiate d commands. Overhead associated with a return to host-servicing activity from BGMS only impacts the first command that interrupted BGMS. This results in a typical delay of about 4 ms.

7.4.1 Media Pre-Scan

Media Pre-Scan is an optional feature that allows the drive to handle unrecovered media errors that would otherwise have been found by the host system during critical da ta accesses early in the integration pr ocess at customer sites. Thi s should reduce integration DP PM (defective parts per mi llion) by id entifying and repair ing media errors that aros e during shipping and handling . Media Pre-Scan repla ces all host-initiated Write commands with Write-Verify commands when the drive is accessi ng areas of the media yet untouched by BG MSinitiated scanning activity.

The drive will attempt to run BGM S on the en tire pack of the dr ive. Thi s will re sult i n incr easi ngly lar ge por tion so fthe drive having been accesed, provided there is adequate idle time to allow BGMS to run. During the PreScan period, all Write commands that are in un-BGMS-scanned areas are converted to Write-Verify commands. To ex pedite the scan of the full pack and the s ubsequenty exit from the Pre- Scan period, BGMS will begin immediately when the drive goes to id le during the Pre-S can per iod, as oppo sed to wai ting 500m s as is done under non-Pre-Scan conditions.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 37

38 Cheetah 10K.7 36GB FC Product Manual, Rev. A

8.0 Installation

Cheetah 10K.7 FC disc driv e i ns tallation i s a plu g- and -play pr oc ess. There are no jumpers, switches, or terminators on the drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FCSCA)

—no cables are required. See Section 9.5 for additional information about this connector.

Use the FC-AL interface to select drive ID and all option configurations for devices on the loop. If multiple devices are on the same FC-AL and physical addresses are used, set the device selection IDs (SEL

IDs) on the backpanel so that no two devices have the same selection ID. This is called the hard assigned arbitrated loop physical address (AL_PA). There are 125 AL_PAs available (see Table 31). If you set the AL_PA on the backpanel to any value othe r than 0, the dev ice plugged into the backpanel’s SCA connec tor inherits this AL_PA. In the event you don’t successfully assign unique hard addresses (and therefore have duplicate selection IDs assigned to two or more devices), the FC-AL generates a message indicating this condition. If you set the AL_PA on the backpanel to a value of 0, the system iss ues a u nique s oft-assign ed phy sical ad dress au tomatically.

Loop initialization i s 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 select ions in the connector prio r 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-le ve l format thi s drive . The dri ve is shippe d from th e facto ry low-lev el for matted i n 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 mad e th ro ugh the int er fac e co n nector (J 1) . Table provides the pin descriptions fo r the 40pin Fibre Channel single connector (J1).

Cheetah 10K.7 36GB FC Product Manual, Rev. A 39

8.2 LED connections

A connector, J6, is provided on the printed circuit board assembly (PCBA) to provide port bypass, drive active, and drive fault LED conne ctions (see Figure 9). Se e Sections 9.5.7, 9.5.8 , and 9.5.9 for descripti ons of LED functions.

Figure 8. Physical interface

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 1.2K ohm resistor in series with this LED driver. Tie the minus side of an external high-effi-

ciency 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 9. LED indicator connector

40 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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 m ounted in any orientation. All dr ive performance characterizati ons, 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

The host enclosure must provide heat rem oval from the driv e. You should confirm t hat the host enclosure is designed to ensu re that the drive operates wi thin the temperature measureme nt guidel ines de scribed i n Section 6.4.1. In some cases , forced airfl ow may be requir ed to keep tempe ratures at or below the temperatur es specified in Section 6.4.1 .

If forced air is nece ssary, possible air-flow patterns are s hown in Figur e 10. The air -flow patterns are c reated by fans either forcing or dra wing air as show n in the illustr ations. Conduction, c onvection, or other forced airflow patterns are acceptable as long as the temperature measurement guidelines of Section 6.4.1 are met.

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)

Figure 10. Air flow

Above unit

Under unit

Above unit

Under unit

Cheetah 10K.7 36GB FC Product Manual, Rev. A 41

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 s urface stiffness (units in lb/i n or N/mm) and X is the out-of-plane surfac e distortion (units in inches or millimeters ). The out-of- plane dis tortion (X) is determine d by defin ing a plan e with thre e of the four mounting points fi xed and evaluating the out-of-plane de flection of the fo urth mounting point w hen a known force (F) is applied to the fourth point.

Note. Before mounting the drive in any kind of 3 .5-inch to 5.25-inch adapter frame, ver ify with Seagate

Technology that the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame. Adapter frames that are available may not have a mecha nical structure capable of moun ting the drive so that i t can meet the shock and vibration specificati ons listed in this manual.

8.6 Grounding

Signal ground (PCB A) and HDA ground a re connected to gether in the driv e and cannot be separate d by the user. The equipment in which the drive is mou nte d is co nnected directly to the H DA an d P CBA with no electrically isolating s hock mounts. If it is desired for the sy stem chassis to not be connected t o the HDA/PCBA ground, the systems in tegrator or user must provide a nonconduc tive (elec trically is olating) m ethod of mou nting the drive in the host equipment.

Increased radiated em issions may res ult if you do not provid e the maximum surf ace area ground conn ection between system ground and drive ground. This is the system designer’s and integrator’s responsibility.

42 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.0 Interface requirements

This section partially describes the interface requirements as implemented on Cheetah 10K.7 FC drives. Additional information is provided in the Fibre Channel Interface Manual (part number 77767496).

9.1 FC-AL features

This section lists the Fibre Channel-specific features supported by Cheetah 10K.7 FC drives.

9.1.1 Fibre Channel link service frames

Table 13 lists the link services supported by Cheetah 10K.7 FC drives.

Table 13: 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_R J T)

Extended link service frames N_Port Login (PLOGI)

Fabric Login (FLOGI) Logout (LOGO) Process Login (PRLI) Process Logout (PRLO) Read Link Status (RLS)

Fabric Address Notification (FAN) Port Discovery (PDISC) Address Di scovery (ADISC ) Third-party Process Logout (TRPLO)

Extended link service reply frames Accept (ACC)

Fibre Channel Services Reg ister FC-4 Types (RFT_ID)

Cheetah 10K.7 36GB FC Product Manual, Rev. A 43

Link Service Reject (LS_RJT)

9.1.2 Fibre Channel task management functions

Table 14 lists the Fibre Channel SCSI Fibre Channel Protocol (FC SCSI FCP) task management functions supported.

Table 14: Fibre Channel SCSI FCP task management functions

Ta sk nam e Supported

Terminate task Clear ACA Target reset Clear task s et Abort task set

No Yes Yes Yes

9.1.3 Fibre Channel task management responses

Table 15 lists the FC SCSI FCP response codes returned for task management functions supported.

Table 15: FC SCSI FCP response codes

Function name Response code

Function complete Function not supported Function reject

00 04 05

44 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.1.4 Fibre Channel port login

Table 16 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.

Table 16: N_Port login (PLOGI) payload

Bytes

0-15 03 00 00 00 XX XX BB BB CF XX FS FS XX XX XX XX Common 16-31 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 is not checked. BB BB-Credit. This field is not checked. The FC-AL drive uses BB -Credit of zero (0). CF Common features. This binary field selects the common features requested by the initiator login.

MSB Continuously increasing offset Must = 1

Random relative offset Not checked. Port Login Accept will return a 0—not supported. Valid version level x N_Port/F_Port Must = 0, N_Port Alternate credit model Must = 1 Other bits reserved xxx XX

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

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

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

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

MSB Class valid Must = 1

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

IC Initiator control

MSB XID reassign xx

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

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

Cheetah 10K.7 36GB FC Product Manual, Rev. A 45

9.1.5 Fibre Channel port login accept

Table 17 identifies the N_Port Login access payload values.

Table 17: N_Port Login Accept (ACC) payload

Bytes

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

CC Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change). FS Receive buffer field size. Th e drive returns a nd use s the rec eive buffer size from the N_P ort Login Class 3 receive

buffer.

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

Node Name fields.

PP Port identifier field.

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

9.1.6 Fibre Channel Process Login

Table 18 lists the process login payload data.

Table 18: Process Login (PLRI) payload

Bytes

0-15 20 10 00 14 08 00 20 00 XX XX XX XX XX XX XX XX 16-1900000022

XX Indicates fields that are not used.

46 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.1.7 Fibre Channel Process Login Accept

Table 19 lists Cheetah 10K.7 FC process login accept payload data.

Table 19: Process Login Accept (ACC) payload

Bytes

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

9.1.8 Fibre Channel fabric login

Table 20 lists the fabric login payload from the drive.

Table 20: Fabric Login (FLOGI) payload

Bytes

0-15 04 00 00 00 20 20 00 00 08 00 08 40 00 00 00 00 Common 16-31 000002F420PPCCCCCCUIUIUI0200CCCC 32-35 CC UI UI UI 36-47 000000000000000000000000Class 1 48-51 00 00 00 00 52-63 000000000000000000000000Class 2 64-67 00 00 00 00 68-79 800000000000084000000000Class 3 80-83 00 00 00 00 84-95 000000000000000000000000Reserve

d 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

CC Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change). UI Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and Node Name

fields.

PP Port identifier field.

01 FLO G I originated on Port A. 02 FLO G I originated on Port B.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 47

9.1.9 Fibre Channel fabric accept login

Table 20 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.

Table 21: Fabric Login Accept (ACC) payload

Bytes

0-15 02 00 00 00 XX XX BB BB CF XX FS FS R_ A_ T0 V_ Common 16-31 E_ D_T0 V_PNPNPNPNPNPNPNPNNNNNNNNN 32-35 NN NN NN NN 36-47 XXXXXXXXXXXXXXXXXXXXXXXXClass 1 48-51 XX XX XX XX 52-63 XXXXXXXXXXXXXXXXXXXXXXXXClass 2 64-67 XX XX XX XX 68-79 SOSOxxxxXXXXFSFSXXxxXXXXClass 3 80-83 OS OS XX XX 84-95 XXXXXXXXXXXXXXXXXXXXXXXXReserve

d 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 checked. BB BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0). CF Common features. This binary field selects the common features requested by the fabric login.

MSB Continuously increasing offset x

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

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

multiple of four bytes. The receive buffer field size in the Class 3 parameters is used. The drive uses the lower FS of Fabric Login Accept or N_Port Login when sending frames to an initiator.

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

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

MSB Class valid Must = 1

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

48 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.1.10 Fibre Channel Arbitrated Loop options

Table 22 lists the FC-AL options supported by Cheetah 10K.7 FC drives.

Table 22: FC-AL options supported

Option Supported

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

Accepted from another device. Private Loop Yes Public Loop Yes Old Port State No Loop Position Yes Loop Position Report Yes

9.2 Dual port support

Cheetah 10K.7 FC drives have two indep endent F C-AL po rts. These ports may be con nected on indepe ndent loops or on the same loop. Port A and Port B may be connected in any order or combination.

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

• If both ports are conne cte d i n t he s am e l oop an d h ar d a ddr essi ng is u se d, a t l eas t o ne p or t will a ttem p t taking a soft address to prevent an address conflict.

Note. When a Cheetah 10K.7 FC 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 requir em ents in t heir p roduc t ma nuals.

Subject to buffer availability, the Cheetah 10K.7 FC drives support:

• Concurrent port tran sfers—The dr ive supports rece iving transf ers on both ports at the same tim e when the ports are on independent loops.

• Full duplex—The driv e supports sending FCP_Data, FCP _RSP, FCP_XFR_RDY and ELS transfers while receiving frames on both ports.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 49

9.3 SCSI commands supported

Table 23 lists the SCSI commands supported by Cheetah 10K.7 FC drives.

Table 23: Supported commands

Command code Supported [4] Command name

00h 01h 03h

04h 07h 08h 0Ah 0Bh 12h

Y Y Y Y Y Y Y Y Y Y Y Y Y Y

Test unit ready Rezero unit Request sense Extended sense Field pointer bytes Actual retry count bytes Format unit [1] Reassign blocks Read Write Seek Inquiry Vital product data page (00h) Unit serial number page (80h)

15h 16h

17h 18h

Y Y Y Y Y Y Y Y N N Y N

Implemented operating def. page (81h) IDevice identification page (83h) Firmware numbers page (C0h) Date code page (C1h) Jumper settings page (C2h) Device behavior page (C3h) Mode select (same pages as Mode Sense command shown below) [3] Reserve 3rd party reserved Extent reservation Release Copy

50 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Table 23: Supported commands (continued)

Command code Supported [4] Command name

1Ah

1Bh 1Ch

Y Y Y Y Y Y Y Y Y Y Y Y Y Y

Mode sense Unit attention page (00h) Error recovery page (01h) Disconnect/reconnect control (page 02h) Format page (03h) Rigid disc drive geometry page (04h) Verify error recovery page (07h) Caching parameters page (08h) Fibre Channel interface control page (19h) Control mode page (0Ah) Power control page (1Ah) Information exceptions control page (1Ch) Start unit/stop unit Receive diagnostic results

1Dh

25h 28h

2Ah

Y Y Y Y Y Y Y Y Y Y

Y Y Y

Supported diagnostics pages Translate page Enclosure services pa ge Send diagnostics p age Supported diagnostics pages Translate page Read capacity Read extended Disable page out Force unit access Relative address Write extended Disable page out Force unit access

Cheetah 10K.7 36GB FC Product Manual, Rev. A 51

Table 23: Supported commands (continued)

Command code Supported [4] Command name

2Bh 2Eh

2Fh

30h 31h 32h 33h

N Y Y Y Y N Y Y Y N N N N N

Relative address Seek extended Write and verify Disable page out Byte check Relative address Verify Disable page out Byte check Relative address Search data high Search data equal Search data low

Set limits 34h 35h 36h 37h 39h 3Ah 3Bh

N Y N Y N N Y Y Y N Y N Y Y

Prefetch

Synchronize cache

Lock-unlock-cache

Read defect data

Compare

Copy and verify

Write buffer

Write combined header and data mode (0)

Write data mode (2)

Download microcode mode (4)

Download microcod e and sav e mod es (5)

Download microcode with offsets mode (6)

Download microcode with offsets and save mode (7)

Firmware download option [2]

52 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Table 23: Supported commands (continued)

Command code Supported [4] Command name

3Ch

3Eh 3Fh 40h 41h

42-4Bh 4Ch 4Dh

Y Y Y Y Y Y

Y N N N

Read buffer Read combined header and data mode (0) Read data mode (2) Read descriptor mode (3) Read long Write long Change definition Write same PBdata LBdata Not used Log Select Log Sense Supported Log page (00h)

4E-4Fh 50h 51h 52h

Y N

Y N N N N

Write Error Counter page (02h) Read Error Counter page (03h) Read Reverse Error Counter page (04h) Verify Error Counter page (05h) Non-medium Error Counter page (06h) Temperature page (0Dh) Application Client page (0Fh) Self Test Results page (10h) Cache Statistics Counter page (37h) Factory Log page (3Eh) Not used XD write XP write XD read

Cheetah 10K.7 36GB FC Product Manual, Rev. A 53

Table 23: Supported commands (continued)

Command code Supported [4] Command name

53-54h 55h 56h

57h 58-59h 5Ah 5B-5Dh 5E 5F 60-7Fh 80h 81h

N Y Y Y N Y N Y N A A N N N

Not used Mode Select (10) [3] Reserved (10) 3rd party reserve Extent reservation Released (10) Not used Mode Sense (10) [3] Not used Persistent reserve in Persistent reserve out Not used XD write extended

Rebuild 82h 83-8Fh A0h C0-DFh EO-FFh

N N Y N N

Regenerate

Not used

Report LUNS

Not used

[1] Cheetah 10K.7 FC drives can format to any multiple of four bytes per logical block in the range 512 to 528

bytes.

[2] Warning. Power loss during flash program mi ng ca n r esul t i n fir mwa re cor r uption. This usually mak es th e

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

N = No. Command is not supported.

A = Support is available on special request.

54 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.3.1 Inquiry data

Table 24 l ists the Inquir y comma nd data that the driv e should return to the initiator pe r the form at given in th e Fibre Channel Interface Manual.

Table 24: Cheetah 10K.7 FC inquiry data

Bytes Data (hex)

0-15 00 00 ** 12 8B 00 PP 0A 53 45 41 47 41 54 45 20 Vendor ID 16-31 [53 54 33 33 36 38 30 37 46 43] 20 20 20 20 20 20 Product ID 32-47 R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00 48-63 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 32* *Copyright 112-127 30* 30* 34* 20 53 65 61 67 61 74 65 20 41 6C 6C 20 notice 128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20

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

03 = The device complies to ANSI X3.301:199x

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

70 = Inquiry data for an Inquiry command received on Port B. R# Four ASCII digits representing the last four digits of the product firmware release number. S# Eight ASCII digits representing the eight digits of the product serial number.

[]

Bytes 18 through 25 reflect model of drive. The table above shows the hex values for Model ST336807FC.

9.3.2 Mode Sense data

The Mode Sense command pr ovide s a way for the driv e to report its operati ng paramete rs to the initi ator. The drive maintains four sets of mode parameters:

1. Default values

Default values are har d-coded in the drive firmwa re stored in fl ash E-PROM (non volatile me mory) on the drive’s PCB. These defa ult values can be changed o nly by downloadi ng a complete s et of new firmw are into the flash E-PROM. An ini tiator can requ est and rece ive from the driv e a list of default values and use those in a Mode Select co mmand to set up new current and s aved values , where the val ues are chan geable.

2. Saved values

Saved values are st ored on the dr ive’s media us ing a Mode Selec t comman d. Only parameter va lue s that are allowed to be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode Select command get their values from default values storage.

When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile memo ry. It is not possible to change the current val ues (or the saved va lues) 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.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 55

On drives requiring unique sa ved va lues, the r equired unique save d value s are sto red into the saved va lues storage location on the medi a pr i or to sh ip ping the drive. Some drives m ay have uni qu e fir m war e wit h unique default values also.

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

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

can be used to change the values identifi ed as chan geable va lues. Or iginall y, current values are installe d from saved or default values after a power on reset, hard reset, Target Reset, or LIP Reset.

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) i ndicates the value can be changed. A zero (0 ) indicates t he value is not changeable. For example , in Table 25, refer to Mode page 81, in the row entitled “CHG.” These are hex numbers representing the ch angeab le values for Mode page

81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable. Note al so that bytes 06, 07, 09, 10, and 11 are not changeable, bec ause 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 fie ld, it mea ns that bit is no t changeable. Since all of the bits in byte 02 are ones, al l of these bi ts 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 Fibre Channel Interface Manual).

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

56 Cheetah 10K.7 36GB FC Product Manual, Rev. A

T able 25: Mode Sense data default and changeable values for ST336807FC drives)

ST336807FC

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

Mode

Sense

Header

DEF 81 0a c0 0c f f 00 00 00 05 00 f f f f

CHG 81 0a f f f f 00 00 00 00 f f 00 f f f f

DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00

CHG 82 0e f f f f 00 00 00 00 00 00 f f f f 00 00 00 00

DEF 83 16 07 63 00 00 00 05 00 00 03 29 02 00 00 01 01 74 00 78 40 00 00 00

CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 01 62 96 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 31 00 00

CHG

DEF 87 0a 00 0c f f 00 00 00 00 00 f f f f

CHG 87 0a 0f f f 00 00 00 00 00 00 f f f f

00 ae 00 10 00 00 00 08 04 45 dc cc 00 00 02 00

<-----------------------------Mode Page 16 Byte Header Data and Parameter Data Bytes--------------------------->

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

DEF 88 12 14 00 f f f f 00 00 f f f f f f f f 00 20 00 00 00 00 00 00

CHG 88 12 b5 00 00 00 f f f f f f f f 00 00 a0 f f 00 00 00 00 00 00

DEF 8a 0a 02 00 00 00 00 00 00 00 02 c0

CHG 8a 0a 03 f1 00 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 f f 00 00 00 00

DEF 9a 0a 00 02 00 00 00 05 00 00 00 04

CHG 9a 0a 00 03 f f f f f f f f 00 00 00 00

DEF 9c 0a 10 00 00 00 00 00 00 00 00 01

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

DEF 80 06 00 00 0f 00 00 00

CHG 80 06 b7 40 0f 00 00 00

<--- Read capacity data --->

04 45 dc cb 00 00 02 00

Cheetah 10K.7 36GB FC Product Manual, Rev. A 57

9.4 Miscellaneous operating features and conditions

Table 26 li sts var ious fe atures and condit ions. A “Y” in the suppor t colu mn indica tes the fea ture or condi tion is supported. An “N” in the support column indicates the feature or condition is not supported.

Table 26: Miscellaneous features

Supported Feature or condition

Y N N N Y N Y Y Y Y N Y

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

Table 27: Miscellaneous status

Supported Status

Y Y Y Y Y Y Y Y N N

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

58 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.5 FC-AL physical interface

Figure 11 shows the location of the J 1 Fi br e C hann el s ing le c onne ct ion at tachment (FC-SCA) and the J6 connector. Figure 13 provides the dimensions of the FC-SCA. Figu re 14 provides the dimension s of the J6 connector.

Details of the physical, el ectrical, and logica l characteristics are p rovided within this se ction. The operati onal aspects of Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual.

Figure 11. Physical interface

9.5.1 Physical characteristics

This section defines physical interface connector.

9.5.1.1 Physical description

FIbre Channel drives may be connected in a loop together or with other compatible F C-AL devices. A m aximum of 127 devices may have ad dresses; howev er, one of the addresses is reserved for a fabric port switch device. This means 126 addresses are available for FC-AL de vices. More FC-AL compatible devices may physically reside on the loop, but they will not be functional because they would not be abl e to obtain valid addresses.

Port bypass circuits (PB Cs) allow de vices to be ins erted into un popula ted location s or re moved from the loop with loop operation rec overy after a brief interru ption. These PBC s are located external to the FC-AL device. Figure 12 shows the relationship between the PBC and FC-AL device.

Port Bypass

Circuit

From Previous

Port Bypass

Circuit N–1

Drive N–1

Drive

MUX

Select

SerialInSerial

Drive N

Out

To Next

Drive

Port Bypass

Circuit N+1

Drive N+1

Figure 12. Port bypass circuit physical interconnect

Cheetah 10K.7 36GB FC Product Manual, Rev. A 59

9.5.2 Connector requirements

Recommended mating SCA part number:

Part description Positions Part number Features

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

With polarization With polarization With polarization With polarization

The FC-AL SCA device connector is illustrated in Figure 13. The J6 connector is illustrated in Figure 14.

1.618 ± .003 in

(41.1 ± 0.08 mm)

in 20

in 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

Pin 1

Pin 21

0.264+.007 in –.010 in

(6.71+0.18 mm)

(–0.25 mm)

0.197 ± .003 in

(5.00 ± .08 mm)

0.226 in

(6.50 mm)

2 places

min.

0.394 ± .004 in

(10.0 ± 0.10 mm)

0.039 in

(0.75 mm)

min.

0.024 in

(0.60 mm)

0.079 ± .010 in (2.00 ± .25 mm)

(initial point

of contact)

min.

.05 in

(1.27 mm)

Figure 13. FC-AL SCA device connector dimensions

typ.

Contact (typ.)

.025 in (0.635 mm)

0.106 ± .010 in

(2.70 ± 0.25 mm)

0.060 ± .010 in

(1.52 ± 0.25 mm)

0.051 ± .006 in

(1.30 ± 0.16 mm)

2 place

60 Cheetah 10K.7 36GB FC Product Manual, Rev. A

(

.787

(19.99 mm)

.079 (2 mm)

.079

2 mm)

Figure 14. J6 connector dimensions

.708

(17.983 mm)

9.5.3 Electrical description

Fibre Channel drives use the FC-SCA connector for:

• DC power

• FC-AL interface

• Drive select (device identification)

• Option selection

• Enclosure Serv ices interface This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 61

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 28: FC-SCA pin descriptions

Pin Signal name Signal type Pin Signal name Signal type

1* -EN bypass port A Low Voltage

TTL output 2* 12 Volts 22 Ground 3* 12 Volts 23 Ground 4* 12 Volts 24* +Port A_in Diff. PECL input pair 5* -Parallel ESI 25* -Port A_in 6* Ground 7* Active LED out Open collector out 27* +Port B_in Diff. PECL input pair 8* Reserved 28* -Port B_in 9* Start_1 [2] TTL input 29 Ground 10* Start_2 [2] TTL input 30* +Port A_out Diff PECL output pair 11* -EN bypass port B Low Voltage

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

[1]

TTL output

21 12 Volts charge

26 Ground

31* -Port A_out

16* Fault LED out Open collector out 36 SEL_2 TTL input/out put 17* DEV_CTRL_CODE_2

[2]

18* DEV_CTRL_CODE_1

[2] 19* 5 Volts 39 DEV_CTRL_CODE _0 [ 2] TTL input 20* 5 Volts 40 5 Volts charge

TTL input 37 SEL_1 TTL input/output

TTL input 38 SEL_0 TTL input/output

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

pin to the common ground.

[2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred elec-

trical connection at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’ setting). Alternatively , these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up resistor (recommended size of 10K ohm), or grounded through some other means.

62 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.5.5 FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 15. The receiver is required to provide the AC coupling to eliminate ground shift noise.

Transmitter

150

Figure 15. FC-AL transmitters and receivers

150

Differential

Transfer Medium

.01

150

.01

Receiver

9.5.6 Power

Power is supplied thr ough the FC-SCA with suppor t for +5 volts and +12 volts. All of t he voltage pins in the drive connector are the same length.

Four 12 volt pins provide +12 volt power to the drive. The current return for the +12 volt power supply is through the common ground pins. T he s upp ly cur rent and r eturn cur rent mu st be distributed as evenly as po ssible among the pins. The maximum current typically occurs while the drive motor is starting.

Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the common ground pins. Distribute supply and return current as evenly as possible among the voltage and ground pins.

The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging” the drives. There are longer voltage contacts in th e connector to enab le 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 curre nt-limiting resistor. The LED and the curre nt-limiting resistor are external to the drive.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 63

9.5.8 Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 29.

Table 29: Active LED Out conditions

Normal command activity LED status

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

The Active LED Out signal is designed to pull down the cathode of a n LED. The anode is attached to the proper +5 volt sup pl y th rough an appropriate current lim iting re si s tor. The LED and the c urr ent li mit ing res is tor are external to the drive.

9.5.9 Enable port bypass signals

The – Enable Byp a ss Po rt A (– EN BYP Po rt A ) a nd – E n able B yp a ss Port B (– EN B YP Port B ) si gna ls con t rol the port bypass circuits (PBC) located ex terna l to the di sc dr iv e. The PB C all ows a loop to remain func tio nal in the event of a driv e fa il ure o r remo val . W he n th es e s i gnals ar e ac tive, low, the PBC b ypasses th e d riv e o n th e associated port . When an Enable Bypass signal is active, the cor responding Po rt Bypass LED signal in connector J1 is driven low by the disc drive. A pull down resistor, 1K, located with the PB C should be used to insure the bypass is enabled if the disc drive is not installed.

The Enable Bypass signal is active under failing condition s 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

64 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.5.10 Motor start controls

The drive’s motor is started acc ording to the Start_1 and Start_2 signals described in Table 30. The state of these signals can be wired into the backplane socket or driven by logic on the backplane.

Table 30: Motor start control signals

Case Start_2 Start_1 Motor spin function

1 Low Low Motor spins up at DC power on. 2 High Low Motor spins up only when SCSI Start command is received. 3 Low High Motor spins up after a d elay o f 12 se conds time s the m odulo 8 val ue 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 driv e addre ss, and, optionally, for an Enclosure Se rvices Interface. When the Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL line. Refer to table 31 fo r a mapping of S EL to FC-AL ph ysical add resses (AL_PA). You can think of the SEL lines as the equivalent of a bac kpanel logi c plug. The dri ves does no t provide pu ll up resist ors on thes e lines. The backpanel is requi r ed to p rovi de hig h a nd low inputs to the SEL_ID lines per th e s pe ci fications in table 33 on page 67.

Note. Table 31 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 vali d AL_PA; however, this value signals the drive that physical addresses ar e not being assigned using the SEL li nes and that a “soft” address will be determined by FC-AL loop initialization.

When the Parallel ESI line is low, the enclosure backpanel logic swit che s to ESI mode if sup porte d. There ar e two modes of ESI , seven bits of enclosure status an d a bidirectional mode. E SI support and the mode are determined by the drive using a discovery process. Refer to the Fibre Channel Interface M anu al for a description of ESI operation.

9.5.11.1 Parallel Enclosure Services Interface (ESI)

The parallel ESI line is a n output from the drive. This line prov ides the enclosure with an indication of the present function of the S EL lines. A h igh level , the default state, indicat es the drive requires a ddress info rmation on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a description of ESI operations.

Cheetah 10K.7 36GB FC Product Manual, Rev. A 65

Table 31: 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 5F 95 D5 0A 10 84 35 53 3A 60 96 D4 0B 11 82 36 54 39 61 97 D3 0C 12 81 37 55 36 62 98 D2 0D 13 80 38 56 35 63 99 D1 0E 14 7C 39 57 34 64 100 CE 0F 15 7A 3A 58 33 65 101

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

AL_PA (hex)

SEL ID (hex)

Setting (dec)

CD 10 16 79 3B 59 32 66 102 CC 11 17 76 3C 60 31 67 103 CB 12 18 75 3D 61 2E 68 104 CA 13 19 74 3E 62 2D 69 105 C9 14 20 73 3F 63 2C 6A 106 C7 15 21 72 40 64 2B 6B 107 C6 16 22 71 41 65 2A 6C 108 C5 17 23 6E 42 66 29 6D 109 C3 18 24 6D 43 67 27 6E 110 BC 19 25 6C 44 68 26 6F 111 BA 1A 26 6B 45 69 25 70 112 B9 1B 27 6A 46 70 23 71 113 B6 1C 28 69 47 71 1F 72 114 B5 1D 29 67 48 72 1E 73 115 B4 1E 30 66 49 73 1D 74 116 B3 1F 31 65 4A 74 1B 75 117 B2 20 32 63 4B 75 18 76 118 B1 21 33 5C 4C 76 17 77 119 AE 22 34 5A 4D 77 10 78 120 AD 23 35 59 4E 78 0F 79 121 AC 24 36 56 4F 79 08 7A 122

66 Cheetah 10K.7 36GB FC Product Manual, Rev. A

9.5.12 Device control codes

The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate on the Fibre Channel ports. Both ports run at the same rate. If the back panel does not connect to thes e lines, the drive has 10K ohm pull up resistors th at default the device c ontrol code to 7 (1.0625 G Hz). Table 32 lists the supported codes.

Table 32: Device control code values

2 (pin 17) 1 (pin 18) 0 (pin 39) Definition

0 0 0 0 1 1 1 1

0 0 1 1 0 0 1 1

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

9.6 Signal characteristics

This section describes the ele ctr ica l s ignal cha ra cteri s tics of the d ri ve’s inpu t and outp ut s ign als . S ee Table 28 on page 62 for signal type and signal name information.

9.6.1 TTL input characteristics

Table 33 provides the TTL characteristics.

T able 33: TTL characteristics

State Voltage Current

Input high 1.9 < VIH < 5.5V IIH = ±500nA max. Input low -0.5V < VIL < 0.9V IOL = ±500nA max. Output high (-EN Bypass A, B) 2.4 < V

< 5.25V IOH < -3mA

Output low (-EN Bypass A, B) VOL < 0.5V IOL < 3mA Output high (-Parallel ESI) 2.4 < V

VOH > 0.9V

< 0.9 V

IOH < -2.4mA I

< -500µA

Output low (-Parallel ESI) 0 < VOL < .45V IOL < 2.4mA Output high (all other outputs) 2.4 < V

VOH > 0.9V

< 0.9 V

IOH < -1.6mA I

< -500µA

Output low (all other outputs) 0 < VOL < .45V IOL < 1.6mA

Cheetah 10K.7 36GB FC Product Manual, Rev. A 67

9.6.2 LED driver signals

Fault and Active LED signals are located in the F C-SCA connector (J1) and through the indicator connector (J6). See Table 34 for the output characteristics of the LED drive signals.

Table 34: LED drive signal

State Current drive available Output voltage

LED off, high 0 < IOH < 100µA LED on, low IOL < -30 mA 0 < VOL < 0.8V

9.6.3 Differential PECL output

The serial PECL output signal voltage characteristics are provided in Table 35. The outputs are not AC coupled in order to deliver m aximum sig nal withou t rise and f all time degr adation. You must AC couple the receiver to isolate potentially different DC characteristics of the outputs and the receiver.

Table 35: Differential PECL output characteristics

Description Parameter

Serial output voltage swing 600 < V

< 1300 mV

out

Figure 16 provides the data output valid eye diagram relative to the bit cell time. T able 37 lists the data values.

Bit Time

Vout (mv)

XMIT Eye

Figure 16. Transmit eye diagram

9.6.4 Differential PECL input

The serial PECL input signal voltage characteristics are provided in Table 36.

Table 36: Differential PECL input characteristics

Description Parameter Notes

Serial input voltage swing 400 < Vin < 2.000 mV AC coupled

68 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Figure 17 provide s the data valid eye diagram for typical and mini mum requirements to reco ver data at the specified interface error rate. The inputs are AC coupled on the drive. Table 37 lists the data values.

Bit Time

Vin (mv)

RCV Eye

(typical)

(minimum)

Figure 17. Receive eye diagram

T able 37: Eye diagram data values

Link rate 1 GHz 2 GHz

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

RCV eye

Typical 659 ps 305 ps Minimum 395 ps 226 ps

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70 Cheetah 10K.7 36GB FC Product Manual, Rev. A

10.0 Seagate Technology support services

Online services

Internet

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Cheetah 10K.7 36GB FC Product Manual, Rev. A 71

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72 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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here, dial our Euro pean CS O warr an ty ce nter at +31-20-316-7222 fr om 8:3 0

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For warranty service in Africa and the Middle East, dial our Euro pean CSO warranty center at +31-20-3167222 from 8:30

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3513. The CSO warranty center is located in Amsterdam, The Netherlands.

A.M. to 11:45 A.M. and 1:00 P.M. to 5:00 P.M. (Central Europe time) Mon-

Cheetah 10K.7 36GB FC Product Manual, Rev. A 73

Asia/Pacific support services

For Asia/Pacific pr esales and technical s upport, dial the toll-fre e number for your specific location. The Asia / Pacific toll-free numbers are available from 6:00 ern time) Monday through Friday, except as noted. If your location is not listed here, direct dial one of our technical support locations.

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

Warranty service is availabl e from 9:00

A.M. to 6:00 P.M. April throu gh October, and 10:00 A.M. to 7:00 P.M.

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Call center Toll-free Direct dial FAX

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2, 4

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1, 4

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1, 4

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1, 4

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Hours of operation are 8:30 A.M. to 5:30 P.M., Monday through Friday (Australian Western time).

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Hours of operation are 9:30 A.M. to 6:30 P.M., Monday through Friday.

Authorized Service Center

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Cheetah 10K.7 36GB FC Product Manual, Rev. A 75

76 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Index

Numerics

12 volt

pins

3rd party reserve command 5 volt pins

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

assembly design adaptive caching Address Discovery (ADISC) addresses AFR

air cleanliness air flow

illustrated Alternate credit model altitude ambient ANSI documents

fibre channel

SCSI arbitrated loop physical address (AL_PA) arbitration asynchronous event notification audible noise Australia/New Zealand Standard auto write and read reallocation

programmable automatic contingent allegiance automatic shipping lock average idle current average rotational latency

backpanel 61 backplane basic link service frames Basic_Accept (B A_ACC) Basic_Reject (BA_RJT)

45, 48

BB-Credit buffer

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

data space

45, 48

cache operation 13 cache segments Caching parameters page (08h) command caching write data Canadian Department of Communications capacity

unformatted capacity, drive, programmable CC

46, 47

45, 48

Change definition command character sync charge pins check condition statu s Class 3 parameters class B limit Class valid clear ACA function clear task set function command descriptor block (CDB) commands supported Common features Company ID Compare command Concurrent sequences condensation condition met/good status connect/disconnect connector

illustrated

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

CS Current profiles customer servic e

error

45, 48

46, 47

45, 48

Cheetah 10K.7 36GB FC Product Manual, Rev. A 77

data block size

modifing the

data heads

read/write

data rate

internal data transfer rate data valid eye Date code page command DC power

requirements dedicated landing zone defect and error management deferred error handling description DEV_CTRL_CODE device behavior page comma nd device control code values device control codes device identification page command device selection IDs devices differential PECL input dimensions Disable page out command disc media disc rotation speed Disconnect/reconnect control (page 02h) command

Download microcode and save modes (5) Download microcode mode (4) Download microcode with offsets and s ave mode (7)

Download microcode with offsets mode (6) drive drive active LED connection drive capacity

drive characteristics drive failure drive fault LED connection drive ID drive ID/option select headers drive malfunction drive mounting drive orientation drive select driver signals drivers and receivers dual port support

programmable

51, 52

33, 42

electrical

description of connector signal characteristi cs

specifications electromagnetic compatibility electromagnetic susceptibility EMI requirements enable bypass

port A

port B

signal

state

Enclosure Services interface Enclosure services page command environmental

limits

requirements environmental control error

detection mechanisms, FC

management

rates

error correction code

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

frames

reply frames Extended sense command Extent reservation command

fabric 48 Fabric Address Notification (FAN) Fabric Login (FLOGI) FAN

fault LED out signal FC-AL

document

interface

options supported

physical interface

SCA device connector, illustrated

selective reset FCC rules and regulations FCP

for SCSI, document

response codes

task management functions FC-PH document features

interface Fibre Channel documents Fibre Channel interface control page Fibre Channel Interface Manual

39, 61

1, 5

78 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Fibre Channel Services 43 Field pointer bytes command firmware

Firmware download option comma nd Firmware numbers page command flawed sector reallocati on FLOGI

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

corruption

received on Port A received on Port B

45, 46, 48

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

47 47

Good status 58 gradient ground shift noise grounding

hard assigned arbitrated loop physical address

(AL_PA)

HDA

heads

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

IC 45 ID and configuration options Implemented operating def. page command Information exceptions control page (1Ch) command

51 Initiator control Inquiry command inquiry data installation

guide

interface

commands supported

description error rate errors illustrated physical

requirements interleave intermediate/condition met/good status intermediate/good status Intermix internal data rate internal defects/errors internal drive characteristics

45, 48

J1 connector 39 J6 connector Jumper settings page command jumpers

40, 41

latency

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

loop position loop position report LS_RJT

LSI circuitry

59, 64

disruption

initialization

FC-AL options

45, 48

11, 13

52 53 53

49 49

maintenance 17 maximum delayed motor start maximum start current media description miscellaneous feature support

Adaptive caching

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Asynchronous event notification 58 Automatic contingent allegiance Deferred error handling FC-AL selective reset Parameter rounding Queue tagging Reporting actual retry count Segmented caching SMP = 1 in Mode Select command Synchronized (locked) spindle operation Zero latency read

miscellaneous sta tus suppor t

ACA active ACA active, faulted initiator Busy

Check condition Condition met/good Good

Intermediate/condition met/good Intermediate/good Reservation conflict

Task set full miscorrected media data Mode select

(10) command

command Mode sense

(10) command

command

data, table monitoring state motor start

controls

option mounting

holes

orientations mounting configuration mounting configuration dimensions MTBF MTBF, see AFR

17, 18

55, 57

N_Port Login (PLOGI) 43

payload

payload values NN

45, 48

Node Name Node name noise

audible noise immunity non-operating

temperature non-operating vibration

29, 30, 32

office environment 32 old port state

FC-AL options

OPEN Full Duplex

FC-AL options

OPEN half duplex

FC-AL options Open sequences per exchange operating operating environment option configurations option selection options orientation OS out-of-plane distortion overhead time

29, 30, 32

10, 49

13, 30

for head switch

for one track cylinder switch

49 49 49

P_LOGI

received on Port A

received on Port B package size package test specification packaged parameter rounding pass-through state PBC

59, 64

PBdata PCBA

peak bits per inch peak operating current PECL input performance charact eris tic s

detailed performance degradation performance highligh ts physical damage physical interface

description physical specifications PI

46, 47

pin descriptions PN

45, 48

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

46 46

19, 59, 64

46, 47

80 Cheetah 10K.7 36GB FC Product Manual, Rev. A

Port Name 48 Port name (initiator’s) power

dissipation requirements, AC requirements, DC

sequencing power connector Power control page (1Ah) command power distribution power-on operating hours power-up hours Prefetch command prefetch/multi-seg men ted ca ch e contr ol preventive maintenance private loop

FC-AL options Proc Assc Process Accept (ACC) Process Login (PRLI) Process Login Accept (ACC) payload process login payload data Process Logout (PRLO) programmable drive capacity public loop

pull down resistor

FC-AL options

25 25

43, 46

recommended mounting Recoverable Errors recovered media data reference

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

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

command rotation speed running disparity

51, 52

queue tagging 58

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

receivers

diagram

45, 48

safety 3 SCA part numbers SCSI interface

commands supported SCSI Interface Product Manual Search data

equal command

high command

low command sector interleave Seek command seek error

defined

rate Seek extended command seek performance characteristics segmented caching SEL ID

lines

standard feature Self-Monitoring Analysis and Reporting Technology

Send diagnostics page command Sequential delivery service

life

, 19

45, 48

Cheetah 10K.7 36GB FC Product Manual, Rev. A 81

Service Option s 48 Service options Set limits command shielding shipping shipping container shock

shock mount signal

single-unit shipping pack kit SMART SMP = 1 in Mode Select command SO spindle brake Stacked connection req. standards Start unit/stop unit command start/stop time support services Supported diagnostics pages command surface stiffness

switches Synchronize cache command synchronized spind le

system chassis

and vibration

characteristics LED driver

9, 19

45, 48

allowable for non-flat surface

operation

45, 48

target reset function 44 task management functions

Abort task set Clear ACA Clear task set Target reset terminate task

task management response codes

Function complete 00 Function not supported 05

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

limits

non-operating

regulation

See also cooling temperature sensor terminate task function terminators Test unit ready command thermal monitor

13, 20, 29, 41

Third-party Process Log out (TRP LO ) tracks per inch tracks per surface Translate page command transmit eye diagram transmitters transporting the drive TTL input characteristics typical access time

UI 46, 47 unformatted unique identifier Unit attention page (00h) command Unit serial number page command Unrecoverable Errors unrecovered media data

46, 47

Valid version level 45, 48 Verify command Verify error recovery page (07h) command vibration Vital product data page command voltage

30, 32

warranty 23 word sync Write and verify command Write buffer command Write combined header and data mode (0) Write command Write data mode (2) Write extended command Write long command Write same command

XD read 53 XD write XD write extended command XID reassign XP write

zero latency read 58 zone bit recording (ZBR)

82 Cheetah 10K.7 36GB FC Product Manual, Rev. A

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

Publication Number: 100384022, Rev. A, Printed in USA

Seagate Cheetah 10K.7 FC ST336807FC Product Manual

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