Seagate ST336807FC User Manual
Users Guide
Cheetah 10K.7 FC
ST336807FC
Users Guide
Cheetah 10K.7 FC
ST336807FC
©2005, Seagate Technology LLC All rights reserved
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
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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
Cheetah 10K.7 36GB FC Product Manual, Rev. A ix
x Cheetah 10K.7 36GB FC Product Manual, Rev. A
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
1
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
8
seeks
12
bits transferred (OEM default settings)
15
bits transferred
21
bits transferred
12
bits transferred with minimum receive eye
14
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
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