Seagate Savvio ST973401LC, Savvio ST936701LC Product Manual

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Users Guide

Savvio SCSI

ST973401LC ST936701LC

Users Guide

Savvio SCSI

ST973401LC ST936701LC

Publication number: 100293075, Rev. C

June 2005

Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. Savvio, SeaTools, SeaFONE, SeaBOARD, SeaTDD, a nd the Wave logo are either registered trademarks or trademarks of Seagate T echnology 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 04/09/04 Initial release. Pages 1-71. Rev. B 01/12/05 Rev. C 06/15/05 Pages 17, 34 and 63-37.

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

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

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

3.2 Media characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

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

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

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

3.6 Factory installed accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.7 Options (factory installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.8 Accessories (user installed). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.0 Performance characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 Internal drive characteristics (transparent to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 SCSI performance characteristics (visible to user) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2.1 Access time [5]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2.2 Format command execution time (minutes) [1] . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

4.3 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.5.3 Optimizing cache performance for desktop and server applications . . . . . . . . . 14

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

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

5.1.1 Environmental interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1.2 Read errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.3 Write errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.1.4 Seek errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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

5.2.1 Mean time between failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

5.2.2 Preventive maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.3 Service life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.4 Service philosophy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.5 Service tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.6 Hot plugging Savvio SCSI disc drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.2.7 S.M.A.R.T. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5.2.8 Thermal monitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.2.9 Drive Self Test (DST). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2.10 Product warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Savvio SCSI Product Manual, Rev. C i

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 12 V - Current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.3 Power dissipation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

6.4 Environmental limits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.4.1 Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.4.6 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

6.4.7 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.4.8 Electromagnetic susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6.5 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.0 Defect and error management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.1 Drive internal defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.2 Drive error recovery procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.3 SCSI systems errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 8

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

8.1 Drive orientation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.2 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

8.3 Drive mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

8.4 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9.0 Interface requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9.2 SCSI interface messages supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

9.3 SCSI interface commands supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

9.3.1 Inquiry Vital Product data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.3.2 Mode Sense data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

9.4 SCSI bus conditions and miscellaneous features supported. . . . . . . . . . . . . . . . . . . . . . . 51

9.5 Synchronous data transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

9.5.1 Synchronous data transfer periods supported . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9.5.2 REQ/ACK offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9.6 Physical interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9.6.1 DC cable and connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

9.6.2 SCSI interface physical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

9.6.3 SCSI interface cable requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

9.6.4 Mating connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

9.7 Electrical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.7.1 Multimode—SE and LVD alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.8 Terminator requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.8.1 Terminator power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9.9 Disc drive SCSI timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

10.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

ii Savvio SCSI Product Manual, Rev. C

List of Figures

Figure 1. Savvio SCSI family drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Typical ST973401 drive +12 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 3. Typical ST973401 drive +5 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 4. Typical ST936701 drive +12 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 5. Typical ST936701 drive +5 V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 6. ST973401 DC current and power vs. input/output operations per second (SE) . . . . . . . . . . 29

Figure 7. ST973401 DC current and power vs. input/output operations per second (LVD). . . . . . . . . . 29

Figure 8. ST936701 DC current and power vs. input/output operations per second (SE) . . . . . . . . . . 30

Figure 9. ST936701 DC current and power vs. input/output operations per second (LVD). . . . . . . . . . 30

Figure 10. Location of the HDA temperature check point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 11. Recommended mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 12. Mounting configuration dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 13. Air flow (suggested) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 14. Physical interface (80-pin SCSI I/O connector) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 15. Nonshielded 80-pin SCSI “SCA-2” connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 16. Typical SE-LVD alternative transmitter receiver circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Savvio SCSI Product Manual, Rev. C iii

1.0 Scope

This manual describes Seagate® SavvioTM disc drives.

Savvio SCSI driv es s upp ort the small computer s y st em inte r fac e (S CSI) a s des c ribed i n the ANSI SCSI SP I- 3

interface specificati ons to the extent des cribed in this manual. The S CSI Interfac e Product Man ual (part num-

ber 75789509) describes general SCSI interface characteristics of this and other families of Seagate drives.

Figure 1. Savvio SCSI family drive

Savvio SCSI Product Manual, Rev. C 1

2 Savvio SCSI Product Manual, Rev. C

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 8.3.

2.1 Standards

The Savvio SCSI fam ily compl ies with Seag ate standard s as noted in the app ropriate s ections of this Ma nual

and the Seagate SCSI Interface Product Manual, part number 75789509.

The Savvio SCSI disc dri ve is a UL re cogni zed co mponent per UL195 0, CSA ce rtifi ed to CSA C2 2.2 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 driv e wit hin their systems to pe rfo rm those tests required 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 per formance of the drive. See Section 5.1.1 and Table 2, DC power require-

ments.

Savvio SCSI Product Manual, Rev. C 3

2.2 Electromagnetic compliance

Seagate uses an indepe ndent laboratory to co nfirm compliance to the di rectives/standard(s) for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected system represents the most popular characteristics for test platforms. The system configurations include:

• Typical current use microprocessor

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

• Printer

• External modem

•Mouse Although the test system with this Seagate model complies to the directives/standard(s), we cannot guarantee

that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide CE Marking and C-Tick 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 t wo Chine se words meani ng “E MC ce rtifica tion” follo wed by an eig ht digi t identifi catio n n umber, as a Marking, it complies with Chinese National Standard (CNS) 13438 and meets the Electromagnetic Compatibility (EMC) Fra mework requ irements of the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI).

4 Savvio SCSI Product Manual, Rev. C

2.3 Reference documents

Savvio SCSI Installa ti on Guide Seagate P/N 100293076

Safety and Regulatory Agency Specifications Seagate P/N 75789512

SCSI Interface Product Manual Seagate P/N 75789509

Applicable ANSI small computer system interface (SCSI) document numbers:

T10/1143D Enhanced SCSI Parallel Interface (EPI)

T10/1416D Primary Commands-2 (SPC-3)

T10/1417D SCSI Block Commands (SBC-2)

T10/1157D SCSI Architectural Model-2 (SAM-2)

T10/1302D SPI-3 (SCSI Parallel Interface version 3)

T10/1365D SPI-4 (SCSI Parallel Interface version 4)

SFF-8451 Specification for SCA-2 Unshielded Connections

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

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

Specification, Acoustic T est Requirements, and Procedures Seagate P/N 30553-001

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

Savvio SCSI Product Manual, Rev. C 5

6 Savvio SCSI Product Manual, Rev. C

3.0 General description

Savvio SCSI drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood

(PRML) read chann el ele ct ronic s , em bed ded se r vo techno logy, and a wide Ultra320 SCSI interface to provide

high performance, h igh c apaci ty d ata s torage for a vari ety o f systems including en gin eer ing wor k statio ns , n et-

work servers, mainframes, and supercomputers.

Ultra320 SCSI uses negotiated transfer rates. These transfer rates will occur only if your host adapter supports

these data transfer rates and is compatible with the required hardware requirements of the I/O circuit type. This

drive also operates at S CSI-1 and SCSI- 2 data tran sfer rat es for backw ard compatib ility with non- Ultra/ Ultra2/

Ultra320 SCSI host adapters.

Table 1 lists the features that differentiate the Savvio SCSI models.

Table 1: Drive model number vs. differentiating features

Model number Number of heads Formatted Capacity

ST973401LC ST936701LC

4 2

73.4 Gbytes

36.7 Gbytes

[1] See Section 9.6 for details and definitions.

The drive records and recovers data on approximately 2.5-inch (65 mm) non-removable discs.

The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface

specifications to th e e xte nt des cri bed i n th is m anu al , wh ic h d efi nes t he pr odu ct perfo rm anc e ch ar acter isti cs o f

the Savvio SCSI family of drives, and the SCSI Interface Product Manual, part number 75789509, which

describes the general interface characteristics of this and other families of Seagate SCSI drives.

The drive’s interface supports multiple initiators, disconnect/reconnect, self-configuring host software, and

automatic features that relieve the host from the necessity of knowing the physical characteristics of the targets

(logical block addressing is used).

The head and disc assembly (HDA) is sealed at the factory. Air circulates within the HDA through a non-

replaceable filter to maintain a contamination-free HDA environment.

Never disassemble the HDA a nd do not at tempt to service ite m s i n t he se aled enclosure ( hea ds, m edi a, ac tu-

ator, etc.) as this requires specia l facilities. The d rive contains no replac eable parts. Opening the HDA voids

your warranty.

Savvio SCSI drives use a dedicated landing zone at the innermost radius of the media to eliminate the possibil-

ity of destroying o r degrading data by landin g in the data zone. The drive automatically goes to the l anding

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.

Savvio SCSI Product Manual, Rev. C 7

Savvio SCSI dr ives deco de track 0 loca tion data from the ser vo data embed ded on eac h surfa ce to eli minate mechanical transducer adjustments and related reliability concerns.

A high-performance actuator assembly with a low-inertia, balanced, patented, straight-arm design provides excellent performance with min im al powe r diss ipation .

3.1 Standard features

The Savvio SCSI family has the following standard features:

• Integrated Ultra320 SCSI controller

• Multimode SCSI drivers and receivers—single-ended (SE) and low voltage differential (LVD)

• 16 bit I/O data bus

• Asynchronous and synchronous data transfer protocol

• Firmware downloadable via SCSI interface

• Selectable even byte sector sizes from 512 to 528 bytes/sector

• Programmable sector reallocation scheme

• Flawed sector reallocation at format time

• Programmable auto write and read reallocation

• Reallocation of defects on command (post format)

• ECC maximum burst correction length of 320 bits

• No preventative maintenance or adjustment required

• Dedicated head landing zone

• Embedded servo design

• Self diagnostics performed when power is applied to the drive

• Zoned bit recording (ZBR)

• Vertical, horizontal, or top down mounting

• Dynamic spindle brake

• 8,192 kbytes data buffer

• Hot plug compatibility (Section 9.6.4.1 lists proper host connector needed)

• Drive Self Test (DST)

• BackGround Media Scan (BGMS)

• Data Integrity Check

•Power Save

• Supports SCSI bus fairness

3.2 Media characteristics

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.

3.3 Performance

• Supports industry standard Ultra320 SCSI interface

• Programmable multi-segmentable cache buffer (see Section 4.5)

• 10,000 RPM spindle. Average latency = 3.00 ms

• Command queuing of up to 64 commands

• Background processing of queue

• Supports start and stop commands (spindle stops spinning)

8 Savvio SCSI Product Manual, Rev. C

3.4 Reliability

• Mean time Between Failure (MTBF) of 1,400,000 hours

• LSI circuitry

• Balanced low mass rotary voice coil actuator

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

• 5-year warranty

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.

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:

ST936701 ST973401

Sector Size

Decimal Hex Decimal Hex

512 71,687,372 445DCCC 143,374,744 88BB998 514 70,512,692 433F034 141,025,384 867E068 520 70,197,546 42F212A 140,395,092 85E4254 522 68,914,176 41B8C00 137,828,352 8371800 524 68,766,592 4194B80 137,577,184 83342E0

2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess capacity above the gua rantee d l ev el wi ll v ar y between other drive fami li es an d f ro m g ene ratio n to generation, depending on how eac h sector size actually forma ts out for zone frequencies and sp lits over servo 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 Paramete r Lis t table in the SCS I Comman d Refer ence M anual. Re fer to t he Par ameter li st blo ck descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not change the capacity it i s currently form atted to have. A number in t he number of bloc ks field that is less than the maximum numbe r of LBAs changes the total driv e capacity t o the val ue in the block descripto r number o f blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.

3.6 Factory installed accessories

OEM Standard drives are shipped with the Savvio SCSI Installation Guide, part number 100293076, and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified).

Savvio SCSI Product Manual, Rev. C 9

3.7 Options (factory installed)

All customer req uested options are inc orporated during produ ction or packaged at t he manufacturing facil ity before shipping. Some of the options available are (not an exhaustive list of possible options):

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

• Single unit shipping pack. The drive is normall y shipped in bulk packagin g to provide maximum pro tection 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 Savvio SCSI Installation Guide , part number 100293076, i s usually include d with each standard O EM drive shipped, but extra copies may be ordered.

• The Safety and Regulatory Agency Specifications, part nu mber 75789512, is usually included with each standard OEM drive shipped, but extra copies may be ordered.

3.8 Accessories (user installed)

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

• Single unit shipping pack.

10 Savvio SCSI Product Manual, Rev. C

4.0 Performance characteristic

4.1 Internal drive characteristics ( transparent to user)

ST973401 ST936701

Drive capacity 73.4 36.7 GBytes (formatted, rounded off values) Read/write heads 4 2 Bytes/track 360,000 360,000 Kbytes (average, rounded off values) Bytes/surface 18,387 18,387 Mbytes (formatted, rounded off values) Tracks/surface (total) 51,052 51,052 Tracks (user accessible) Tracks/inch 105 105 KTPI Peak bits/inch 660 660 KBPI Internal data rate 506-753 506-753 Mbits/sec (variable with zone) Disc rotational speed 10,009 10,009 revolutions/min (RPM) Average rotational latency 3.00 3.00 msec

4.2 SCSI performance characteristics (visible to user)

The values giv en in Section 4 .2.1 apply to a ll models of the S avvio SCSI fami ly unless otherwis e specified. Refer to Section 9.9 and to the SCSI Interface Product Manual for additional timing details.

4.2.1 Access time [5]

Including controller overhead (without disconnect) [1] [3]

Drive level Drive level

Not including controller overhead (without disconnect) [1] [3]

Read Write Read Write

msec msec Average—Typical [2] 4.70 5.10 4.50 4.90 Single Track—Typical [2] 0.65 0.95 0.45 0.75 Full Stroke—Typical [2] 8.70 9.10 8.50 8.90

4.2.2 Format command execution time (minutes)

ST973401 ST936701

[1]

Maximum (with verify) 52 26 Maximum (no verify) 26 13

Savvio SCSI Product Manual, Rev. C 11

4.2.3 Generalized performance characteristics

Minimum sector interleave 1 to 1

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

Maximum

[3]* 63 Mbytes/sec

[3] 94 Mbytes/sec

SCSI interface data transfer rate (asynchronous):

Maximum instantaneous one byte wide 5.0 Mbytes/sec [4] Maximum instantaneous two bytes wide 10.0 Mbytes/sec [4]

Synchronous transfer rate Ultra320 SCSI

In low voltage differential (LVD) interface mode 5.0 to 320 Mbytes/sec

Sector Sizes:

Default 512 byte user data blocks Variable 512 to 528 bytes per sector in even number of bytes per sector.

If n (number of bytes per sector) is odd, then n-1 will be used.

Read/write consecutive sectors on a track Yes Flaw reallocation performance impact (for flaws reallocated at format time using

Negligible

the spare sectors per sparing zone reallocation scheme.) Average rotational latency 3.00

msec

Notes for Section 4.2.

[1] Execution time measu red from receipt of the last by te of the Command Descriptor B lock (CDB) to the

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

[2] Typical access times are measured u nder nom inal condi tions of te mpera ture, v oltage, and hor izontal or i-

entation as measured on a representative sample of drives. [3] Assumes no errors and no sector has been relocated. [4] Assumes system ability to support the rates listed and no cable loss. [5] Access time = controller overhead + average seek time and applies to all data transfer commands.

Access to data = access time + latency time.

4.3 Start/stop time

After DC power at nomi nal vol tage has been appli ed, th e dr ive bec omes ready withi n 20 seco nds if the Mo tor Start Option is disabled (i.e. the motor sta rts as soon as the power has be en applied). If a rec overable error condition is detected during the start sequence, the drive executes a recovery procedure which may cause the time to become ready to exceed 20 seco nds. During spin up to ready time the drive responds to s ome commands over the SCSI interface in less than 3 seconds after application of power. Stop time is 30 seconds from removal of DC power.

If the Motor Start Option is enabled, the internal controller accepts the commands listed in the SCSI Command Reference Manual less than 3 s ec ond s a fter DC power h as bee n ap pli ed . After the Moto r Start Command has been received the dri ve becomes re ady for norma l operations withi n 20 second s typically (excluding a n error recovery procedur e). The Motor Start Command can also be u sed to command t he drive to stop the spi ndle (see the SCSI Command Reference Manual).

There is no power control switch on the drive.

12 Savvio SCSI Product Manual, Rev. C

4.4 Prefetch/multi-segmented cache control

The drive provides prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. “Cache” as used herein refers to the drive buffer storage space when it is used in cache operations. To select prefetch and cache features the host sends the Mode Select command with the proper values in the applicable bytes in Mode Page 08h (see the SCSI Command Reference Manual). Prefetch and cache ope ration are independent features from the standpoint that each is enabled and disabled independently via the Mode Select command. However, in actual operation the prefetch feature overlaps cache operation somewhat as is noted in Section 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 Tables 15.

4.5 Cache operation

In general, 7,100 kbytes of the physical buffer space in the drive can be used as storage space for cache operations. The buffer can be d ivided into logical segments (Mode Selec t Page 08h, byte 13) from which data is read and to which data is written. The drive supports a maximum of 64 cache segments. The drive maintains a table of logical block dis c medium a ddres ses of th e data stored i n eac h segm ent of the buffer. If cache operation is enabled (RCD bit = 0 in Mode P age 08h, byte 2, bit 0. See SCSI Command Referenc e Manual), data requested by the hos t with a Read command is r etrie ved from the buffer ( if i t i s th er e) , b efo re an y di sc ac ce ss is initiated. If c ache oper ation is no t enabl ed, the buffer (stil l se gmented with r equired num ber of s egments) is still used, but only as circular buffer segments during disc medium read operations (disregarding Prefetch operation for the momen t). 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 h ost. On a ca che mis s, all data transfe rs to the hos t are in acc ordance wi th buffer-full ratio rules. On a cach e hit the drive igno res the buffer-full r atio rules . See e xplanati ons assoc iated with Mode page 02h (disconnect/reconnect control) in the SCSI Command Reference Manual.

The following is a simplified description of a read operation with cache operation enabled: Case A - A Read command is received and the first logical block (LB) is already in cache:

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

2. When the requested LB is reached that is not in any cache segment, the drive fetches it and any remaining requested LBs from th e disc and puts them in a segment of the cache. The dri ve transfers the re maining requested LBs from the ca che to t he host in accorda nce with the disconn ect/r econn ect speci fication mentioned above.

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, the first LB of which is not in any segment of the cache:

1. The drive fetches the requested LBs from the disc and transfers them into a segment, and from there to the host in accordance with the disconnect/reconnect specification referred to in case A.

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

Each buffer segment is act ually a self-containe d circular sto rage (wrap-arou nd occurs), the length of which is an integer number of disc medium sectors. The wrap-around capability of the individual segments greatly enhances the buffer’s overall performance as a cache storage, allowing a wide range of user selectable configurations, which includes their use in the prefetch operation (if enabled), even when cache operation is disabled (see Section 4.5.2) . The number of segments is s et dynamically by t he drive and cannot be s et by the host. The size in Kbytes of eac h segment is not reported by the Mode Sen se co mma nd page 08 h, by tes 14 and 15 . The value 0XFFFF is always reported. If a size specification is sent by the host in a Mode Selec t command (bytes 14 and 15) no new segment size is set up by the drive, and if the STRICT bit in Mode page 00h (byte 2, bit 1) is set to one, the drive resp onds as it does for any attempt to chan ge unchangeable parameter s (see SCSI Command Reference Manual).

Savvio SCSI Product Manual, Rev. C 13

4.5.1 Caching write data

Write caching is a write operation by the d rive th at makes u se of a dr ive b uffer s to rage ar ea wher e the da ta to be written to the medium is stored in one or more segments 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.

If the number of write data logi cal block s exceeds th e size of the s egment being wr itten into, whe n 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 before the data has been written to the medium. If an error occurs while writing the data to the medium, and GOOD status has already been returned, a deferred error will be generated.

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

Tables 15 show Mode default settings for the drives.

4.5.2 Prefetch operation

If the Prefetch fea ture i s ena bl ed, data in co nti guo us lo gic al b lock s on t he d is c immediately beyond tha t whi c h was requested by a Read command can be re trieved and stored in the buffer for i mmediate transfer from the buffer to the host on subseque nt 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. Prefetch is enabled using Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bi t = 0 enables prefetch. S ince data that is prefetc hed replaces data already in some buffer segment(s ), the hos t can lim it the amou nt of pr efet ch data to optimi z e syst em performance. The max prefetch field (bytes 8 a nd 9) limits the amount of pref etch. The drive does not use the Prefetch Ceiling field (bytes 10 and 11).

During a prefetch operati on, the dri ve crosses a cylinde r boundary to fetch mor e data only if th e Discontinu ity (DISC) bit is set to one in bit 4 of byte 2 of Mode parameters page 08h.

Whenever prefetch ( re ad loo k-ah ead) is enabled ( ena ble d b y DRA = 0), i t o per at es und er th e c on tro l of A RLA (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 con tiguou s blocks of da ta (e.g., “software i nterleave”) . ARLA disab les prefetc h 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 ontiguous bloc ks of data , ARLA d isables pr efetc h, but as long as seq uentia 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 configure the ca che to respond quic kly to repetitive acc esses of multiple sm all segments 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

14 Savvio SCSI Product Manual, Rev. C

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 (unless changed by using a Mode Select command). For additional information about the PM bit, refer to the Unit Attention Param eters page (00h) of the Mode Sense command (1Ah) in the SCSI Interfac e Product Manual, part number 75789509.

Savvio SCSI Product Manual, Rev. C 15

16 Savvio SCSI Product Manual, Rev. C

5.0 Reliability specifications

The following reliabi lity specifications assume cor rect host/drive operational interfa ce, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 8.3).

Seek Errors

Less than 10 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 MTBF 1,400,000 hours Service Life 5 years Preventive Maintenance None required

Note.

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

5.1 Error rates

The error rates stated in this specification assume the following:

• The drive is operated per this specification using DC power as defined in this manual (see Section 6.2).

• The drive has been formatted with the SCSI FORMA T command.

• Errors caused by me dia defects or host sy s tem fai lure s are e xc lu ded from er r or r ate c omp utations. Refer t o Section 3.2, “Media Characteristics.”

• Assume random data.

seeks

bits transferred (OEM default settings)

bits transferred

5.1.1 Environmental interference

When evaluating s ystems ope ration under cond itions o f Electro magnetic Interferen ce (EMI) , the per formance of the drive within the system sh all be consid ered acce ptable if the drive do es not gener ate an unrec overable condition.

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

• Is not detected and corrected by the drive itself;

• Is not capable of being detected from the error or fault status provided through the drive or SCSI interface; or

• Is not capable of being recovered by normal drive or system recovery procedures without operator intervention.

Savvio SCSI Product Manual, Rev. C 17

5.1.2 Read errors

Before determination or measurement of read error rates:

• The data that is to be used for measurement of read error rates must be verified as being written correctly on the media.

• All media defect induced errors must be excluded from error rate calculations.

5.1.3 Write errors

Write errors can occur as a result of media defects, envi ronmental interfe rence, or equipm ent malfunction. Therefore, write errors are not predictable as a function of the number of bits passed.

If an unrecoverable write error occurs because of an equ ipm ent malfu nctio n in the drive , the error is classi fied as a failure affecting MTBF. Unrecoverable write errors are those which cannot be corrected within two attempts at writing the record with a read verify after each attempt (excluding media defects).

5.1.4 Seek errors

A seek error is de fine d a s a failu re of t he d ri ve to pos it ion the heads to the addressed tra ck. T h er e shal l be n o more than ten recoverable seek errors in 10

physical seek operations. After detecting an initial seek error, the drive automatical ly perfor ms an error recovery process. If the err or recovery process fai ls, a see k positionin g error (15h) is rep orted with a Hard ware error (4h) rep orted in the Sens e Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as fa ilures for MTBF calculati ons. Refer to the SCSI Interfac e Product Manual, part number 75789509, for Request Sense information.

5.2 Reliability and service

You can enhance the reliability of Savvio SCSI disc drives by ensu ring that the drive rec eives adequat e cooling. Section 6 provid es temperature measurements an d other information that may be used t o enhance the service life of the drive. Section 8.2 provides recommended air-flow information.

5.2.1 Mean time between failure

The production disc dri ve shall achieve an MTBF of 1 ,400,000 hours when operate d in an environment that ensures the HDA case t emperatures specified in Section 6.4 are not ex ceeded. Short-term ex cursions up to the specificatio n limits of the ope rating en vironm ent will no t affect MTBF pe rformance. Continua l or sustaine d operation at case temperatures above the values shown in Section 6.4.1 may degrade product reliability.

The MTBF target is specified as device power-on hours (POH) for all drives in service per failure. Estimated power-on operating hours in the period = MTBF per measurement period

Number of drive failures in the period

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.

MTBF is based on the following assumptions:

• 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.

18 Savvio SCSI Product Manual, Rev. C

A S.M.A.R.T. predictive failure indic ates that the dri ve is deterior ating to an immin ent failu re and is co nside red an MTBF hit.

5.2.2 Preventive maintenance

No routine scheduled preventive maintenance shall be required.

5.2.3 Service life

The drive shall ha ve a us eful ser vice l ife of fi ve years. Depot r epair or re place ment of m ajor parts is permitte d during the lifetime (see Section 5.2.4).

5.2.4 Service philosophy

Special equipment is required to repair the drive HDA. In order to achieve the abo ve service lif e, repairs must be performed only a t a pro perly e quippe d and s taffed service and repair facility. Troubleshooting and repair of PCBs in the field is not recomm ended, because of the extensiv e diagnostic equipment req uired for effective servicing. Also, there are no spare parts available for this drive. Drive warranty is voided if the HDA is opened.

5.2.5 Service tools

No special tools are required for site installation or recommended for site maintenance. Refer to Section 5.2.4. The depot repair philosophy of the drive precludes the necessity for special tools. Field repair of the drive is not practical since there are no user purchasable parts in the drive.

5.2.6 Hot plugging Savvio SCSI disc drives

The ANSI SPI-3 (T10/13 02D) document defines the physical requir ements for removal and insertion of SCSI devices on the SCSI bus. Four cases are addressed. The cases are differentiated by the state of the SCSI bus when the removal or insertion occurs.

Case 1 - All bus devices powered off during removal or insertion Case 2 - RST signal asserted continuously during removal or insertion Case 3 - Current I/O processes not allowed during insertion or removal Case 4 - Current I/O process allowed during insertion or removal, except on the device being changed Seagate Savvio S CSI disc d rives supp ort all four hot pluggi ng cases. Provision sh all be mad e by the s ystem

such that a device being ins erted make s power and groun d connecti ons prior to the c onnectio n of any device signal contact to the bus. A d evice bein g remov ed sha ll ma intain powe r and gr ound c onnec tions after the di sconnection of any dev ic e sig nal c ontact f ro m th e bu s ( see S F F-8 451 Specificatio n fo r SC A-2 Uns hi eld ed C onnections).

It is the responsibility of the systems integrator to assure that no hazards from temperature, energy, voltage, or ESD potential are presented during the hot connect/disconnect operation.

All I/O processes for th e SCSI device bein g inserted or remov ed shall be quiesc ent. All SCSI devices on the bus shall have receivers that conform to the SPI-3 standard.

If the device being hot plugged uses single-ended (SE) drivers and the bus is currently operating in low voltage differential (LVD) mode, then all I/O processes fo r all dev ices on the bus must be compl eted, an d the bus quiesced, before attempting to hot plug. Following the insertion of the newly installed device, the SCSI host adapter must issue a Bus Reset, fol lowed by a sy nchronous transfer ne gotiation . Failure to per form the SCSI Bus Reset could result in erroneous bus operations.

The SCSI bus termination and termination power source shall be external to the device being inserted or removed.

Savvio SCSI Product Manual, Rev. C 19

End users shoul d not mix devices with high vol tage differential (HVD) driv ers and r eceivers a nd devices with SE, LVD, or multimode drivers and receivers on the same SCSI bu s since the comm on mode vo ltages in the HVD environment may not be controlled to safe levels for SE and LVD devices (see ANSI SPI-3).

The disc drive s pindle must come to a complete s top prior to completely removing the drive from the cabine t chassis. Use of th e Stop Spindle command or partial withdr awal of the drive, e nou gh to b e disco nnecte d fro m the power source, prior to removal are methods for insuring that this requirement is met. During drive insertion, care should be taken to avoid exceeding the limits stated in Section 6.4.4, "Shock and vibration" in this manual.

5.2.7 S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Mo nitoring Ana lysis and Re porting Technology. T his technol ogy is intende d to recognize condi tions that i ndicate a dri ve fai lure an d is d esigned to p rovide sufficie nt warn ing of a f ailure t o allow data back-up before an actual failure occurs.

Note. The firmwa re will monitor s pecific attribute s for degradation over time but canno t predict instanta-

neous drive failures.

Each attribute has been selected to mo nit o r a s pe ci fic set o f fa il ure c ond iti ons i n th e o perati ng performance of the drive, and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M .A.R.T. is controlled by the DEX CPT bit and the PERF bit of the “ Informational Exceptions Control Mo de Page” (1Ch) . The DEXCPT bit i s used to enable or di sable the S .M.A.R.T. process. Setting the DEXCPT bit will disable all S.M.A.R.T . functions. When enabled, S.M.A.R.T. will collect on-line data as the drive performs no rmal read/wri te oper ations. W hen th e PERF bi t is set , the dr ive is c onsidered to b e in “On-line Mode Only” and will not perform off-line functions.

The process of measuring off-line attributes and saving data can be forced by the Rezero Unit command. Forcing S.M.A.R.T. will reset the timer so that the next scheduled interrupt will be two hours.

The drive can be interrogated by the host to determine the time remaining before the next scheduled measurement and data logging process will occu r. This is accomplished by a log sense command to log page 0x3E. The purpose is to allow the customer to control when S.M.A.R.T. interruptions occur. As described above, forcing S.M.A.R.T by the Rezero Unit command will reset the timer.

Performance impact

S.M.A.R.T . attribute data will be saved to the disc for the purpose of recreating the events that caused a predictive failure. The driv e wi ll measure and save parameter s on ce ever y tw o hou rs subj ec t to an idl e p er iod on th e SCSI bus. The process of measu ring off-line attribute data and saving data to the disc is uninterruptable and the maximum delay is summarized below:

Maximum processing delay

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

S.M.A.R.T. delay times 60 milliseconds 370 milliseconds

Reporting control

Reporting is contr olled in the Inform ational Exceptions Control Page (1Ch). Subject to the repo rting method, the firmware will is sue a 01-5D00 sense code to th e h ost . T he erro r co de i s pr es erve d th ro ugh bus res ets an d power cycles.

20 Savvio SCSI Product Manual, Rev. C

Determining rate

S.M.A.R.T. monitors the rate at which error s occur and signal s a predic tive fai lure if the rate of degra ded error rate increases to an un acce ptab le le ve l. To determine rate, error events are logged and compar ed to the number of total operations for a given attribut e. The interval define s the number of operatio ns over which to measure the rate. The counter that kee ps track of the current number of oper ations is referred to as the Interval Counter.

S.M.A.R.T. measures error rate, hen ce for each attribute the occurrence of a n error is 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 simpl y the number of errors per operation. T he algorithm t hat S.M.A. R.T. uses to reco rd rates o f error is to set thresholds for the number of errors and the interval. If the number of errors exceeds the threshold before the interval expires , then the error rate i s considered to be un acceptable. If the num ber of errors does not exceed the threshol d before the interval expires, then the error rate is cons idered 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 dri ve is perfor ming unacc eptably for a period of time. Th e firmware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is incre mented wheneve r the error rate is unacc eptable and decremen ted (not to exceed zero) whenever the error rate is acceptable. Should the counter continually be incremented such that it reaches the predi ctive th resh old, a pred ictive failure is s ignal ed. This cou nter is refe rred to as the Failu re Hi story Counter. There is a separate Failure History Counter for each attribute.

5.2.8 Thermal monitor

Savvio 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 inte rface when the tem-

perature exceeds a s et threshol d. The tem perature is measured at power-up an d then at ten-minute intervals after power-up.

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 com mand. The reference tempe rature parameter in the tem perature log page (see Table 11)

Savvio SCSI Product Manual, Rev. C 21

can be used to set this trip point. The default value for this drive is 68°C, however, you can set it to any va lue in the range of 0 to 68°C. If you s pec i fy a temp erature greater than 68°C in th is fie ld, the te mpe ratur e i s rou nde d down to

68°C. A sense code is sent to the host to indicate the rounding of the parameter field.

Table 11: Temperature Log page (0Dh)

Parameter Code Description

0000h 0001h

Primary Temperature 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.

5.2.9 Drive Self Test (DST)

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

There are two test coverage options implemented in DST:

1. Extended test

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

block address (LBA ) of the drive. The s hort test is time-res tricted and limited i n length—it does not s can the entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an err or during either of these tests, it r eports a fault condition. If the drive f ails the test, remove it from service and return it to Seagate for service.

5.2.9.1 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.

5.2.9.2 Implementation

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

5.2.9.2.1 State of the drive prior to testing

The drive must be in a ready state before issuing the Send 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.

22 Savvio SCSI Product Manual, Rev. C

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.

5.2.9.2.2 Invoking DST

To in voke DST, submit the Send Diagnostic comman d with the ap propriate F unction Code (001b for the shor t test or 010b for the extended tes t) in bytes 1, bits 5, 6, and 7. Refer to the Seagate SCSI Interface Product Manual, part number 75789509, for additional information about invoking DST.

5.2.9.2.3 Short and extended tests

DST has two testing options:

1. short

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

segment.

Short test (Function Code: 001b)

The purpose of the short test is to pr ov ide a ti me-l imi ted te st that tests as much o f th e dr iv e as po ss ib le wi thi n 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 elemen t 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.

5.2.9.2.4 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 param eter b lock . T he driv e r ep 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

Savvio SCSI Product Manual, Rev. C 23

After a self-test is complete or has been aborted, the dri ve upda tes the Sel f-Test Results Value field in its SelfTest Results Lo g pa ge in n on- v ola til e m emo ry. The host may use Log Sense to read the resul ts 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 i s zero, the drive pas sed with no errors detected by the DST. If the field is not zero , the test failed for the reason reported in the field.

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

5.2.9.2.5 Abort

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

You can abort a DST executing in backgrou nd mode by using the a bort code in t he DST 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).

5.2.10 Product warr anty

Beginning on the date of shipment to customer and continuing for a period of five years, Seagate warrants that each product (including components and subassemblies) or spare part that fails to function properly under normal use due to defect in mate rials on workm anship or due to no nconfo rmance to the appl icable s pecif ications will be repaired or rep laced, at Seagate’s optio n an d a t no ch ar ge to c ustomer, if returned by customer at cu stomer’s expens e to Seagate’s designated faci lity in accordance wit h Seagate’s warranty procedur e. Seagate will pay for transporting the repair or replacement item to custom er. F or more detailed warranty informat ion refer to the Standard terms and conditions of Purchase for Seagate products.

Shipping

When transporting or shipping a dr ive, a Seagate approved container mus t be used. Keep your original box. They 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 rece ipt of co mpo nen ts imp ro per l y packa ged or o bv iou sly da mag ed in transit. Contact your Autho r iz ed Se agat e Di s tribu tor to pu rc ha se add iti on al box es . Se a gate re comm ends shipping 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 facilities. Any unau thorized repair or tampering with the fact ory-seal voids the warranty.

24 Savvio SCSI Product Manual, Rev. C

6.0 Physical/electrical spe cifications

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

6.1 AC power requirements

None.

6.2 DC power requirements

The voltage and current requirements for a single drive are shown in the following table. Values indicated apply at the drive power connector. The table shows current values in Amperes.

Table 2: DC power requirements

Notes

Voltage +5V +12 V +5V +12 V +5V +12 V +5V +12 V Regulation [5] +10%/

Average idle current DC X Maximum starting current

(peak DC) DC 3σ

(peak AC) AC 3σ Delayed motor start (max) DC 3σ [1][4] 0.49 0.05 0.48 0.05 0.49 0.05 0.49 0.05 Peak operating current

DC X

Maximum DC 3σ

Maximum (peak) DC 3σ

[1][7] 0.51 0.21 0.50 0.21 0.51 0.19 0.50 0.19 [3]

[3] 0.68

[1][6] [1] 0.73

SE mode LVD mode SE mode LVD mode

-7.5%

1.01

0.75

1.12

ST973401 ST936701

+10%/

-7.5%[2]

1.68

2.70

0.40

0.46

1.50

+10%/

-7.5%

0.72

1.14

0.74

0.75

1.32

+10%/

-7.5%[2]

1.68

2.65

0.43

0.49

1.54

+10%/

-7.5%

0.70

1.00

0.74

0.76

1.14

+10%/

-7.5%[2]

1.58

2.68

0.46

0.49

1.48

+10%/

-7.5%

0.65

1.03

0.69

0.74

1.30

+10%/

-7.5%[2]

1.58

2.66

0.47

0.49

1.48

[1] Measured with avera ge re adi ng D C am mete r or equ iv alent s am pl ing sc op e. I nstan taneou s c urr ent pea ks

will exceed these value s. Power supply at nom inal voltage. Number of driv es tested = 6, 35

De grees C

ambient.

[2] For +12 V, a –10% tolerance is permissible during in itial start of spindle , and must return t o ±5% before

10,000 rpm is rea ched. The ±5% must b e main tained after the dri ve sign ifies th at its power-up se quence

has been completed and that the drive is able to accept selection by the host initiator. [3] See +12 V current profile in Figure 2. [4] This condition occu rs when the Motor Start Option is ena bled and the drive has not yet receiv ed a Start

Motor command. [5] See Section 6.2.1 “Con ducted Noise Immunity.” Specified voltage tolerance is inclusive of r ipple, noise,

and transient response.

Savvio SCSI Product Manual, Rev. C 25

[6] Operating condition is defined as random 8 block reads at:

259

I/Os per second (ST973401LC)

259

I/Os per second (ST936701LC)

[7] During idle, the d rive heads are reloca ted every 60 seconds to a random location within the band from

three-quarters to maximum track.

General Notes from Table 2:

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 +5 and +12 volt supplies shall 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. Daisy-chain oper ation requires that power be maintained on the SCSI bus termi nator to ensure proper termination of the peripheral I/O cables. T o automatically delay motor start based on the target ID (SCSI ID) enable the Delay Motor Start option and disable the E nable Motor Start option on the backplane. To delay the motor until the dr ive rece ives a Start Unit command, en able the Enable Re mote Motor Start option on the backplane.

6.2.3 12 V - Current profile

Figure 2 and 4 identify the drive +12 V curr ent pr ofiles and fi gures 3 and 5 iden tify the dr ive +5 V c urrent profiles. The current during the various times is as shown:

T0 - Power is applied to the drive. T1 - Controller self tests are performed. T2 - Spindle begins to accelerate under current limiting after performing drive internal

diagnostics. See Note 1 of Table 2. T3 - The spindle is up to speed and the head-arm restraint is unlocked. T4 - The adaptive servo calibration sequence is performed. T5 - Calibration is complete and drive is ready for reading and writing.

Note. All times and currents are typical. See Table 2 for maximum current requirements.

26 Savvio SCSI Product Manual, Rev. C

Figure 2. Typical ST973401 drive +12 V current profile

Figure 3. Typical ST973401 drive +5 V current profile

Savvio SCSI Product Manual, Rev. C 27

Figure 4. Typical ST936701 drive +12 V current profile

Figure 5. Typical ST936701 drive +5 V current profile

28 Savvio SCSI Product Manual, Rev. C

6.3 Power dissipation

ST973401

For drives using single-ended interface circuits, typical power di ssipation under idle con ditions is 5.07 watts (17.3 BTUs per hour).

For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is 5.02 watts (17.1 BTUs per hour).

To ob tain operating power for typ ical random read oper ations, refer to the foll owing two I/O rate curv es (see Figures 6 and 7). Loc ate th e typical I/O rate for a drive in your s yst em on the horizontal axis and r ea d th e cor responding +5 volt curr ent, +12 volt current, and to tal watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

ST 973401L C DC CURRENT/POWE R vs THRO UGHPUT (Single Ended)

1.400

1.200

R an dom 8 Bl ock Reads

14 .0 0

12 .0 0

5Volt A 12 V o l t A Watts

1.000

0.800

0.600

Amperes

0.400

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300.0

10 .0 0

8.00

6.00

4.00

2.00

0.00

Power (watts)

I/Os per Second

Figure 6. ST973401 DC current and power vs. input/output operations per second (SE)

ST973401LC DC CURRENT/POWER vs THROUGHPUT (Low Voltage Differential)

1.4 0 0

1.2 0 0

1.0 0 0

0.800

Random 8 Block Reads

14. 0 0

12. 0 0

10. 0 0

8.00

Power (watts)

5Volt A 12 V o l t A Watts

0.600

Amperes

0.400

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300. 0

Figure 7.

ST973401 DC current and power vs. input/output operations per second (LVD)

Savvio SCSI Product Manual, Rev. C 29

6.00

4.00

2.00

0.00

I/Os per Second

ST936701

For drives using single-ended interface ci rcuits, typical power diss ipation under idle condi tions is 4.83 watts (16.5 BTUs per hour).

For drives using low voltage differential interface circuits, typical power dissipation under idle conditions is

4.83

watts (16.5 BTUs per hour). To ob tain operating power for typ ical random read o perations, refer to the f ollowing two I/O rate cur ves (see

Figures 6 and 7). Loc ate th e typical I/O rate f or a dr ive in your system on the ho ri zo ntal a xis and r ea d th e c orresponding +5 volt curr ent, +12 volt current, and to tal watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

ST 93 6701LC DC CURRENT/POWER vs THROUGHPUT (Single Ended)

1.4 0 0

1.2 0 0

1.0 0 0

0.800

0.600

Amperes

0.400

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300.0

R andom 8 Blo ck Reads

I/Os per Second

14 .0 0

12 .0 0

10 .0 0

8.00

6.00

4.00

2.00

0.00

5Volt A 12 Vo lt A Watts

Power (watts)

Figure 8. ST936701 DC current and power vs. input/output operations per second (SE)

ST 936 701LC DC CURRENT/POWER vs THROUGHPUT (Low Voltage Differential)

1.4 0 0

1.2 0 0

1.0 0 0

0.800

0.600

Amperes

0.400

0.200

0.000

0.0 50.0 100.0 150.0 200.0 250.0 300.0

Figure 9.

ST936701 DC current and power vs. input/output operations per second (LVD)

R andom 8 Blo ck Reads

I/Os per Second

14 .0 0

12 .0 0

10 .0 0

8.00

6.00

4.00

2.00

0.00

Power (watts)

5Volt A 12 Vo lt A Watts

30 Savvio SCSI Product Manual, Rev. C

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

6.4.1 Temperature

a. Operating

With cooling designe d to maintain the case temper atures, the dr ive meets all s pecificati ons over a 41° F to 131°F (5°C to 55°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. The enclosure for the drive s hou ld b e de si gne d su ch that the temperatures are not ex c eede d. A ir flow may be needed to achieve these temp erature values (see S ection 8.2). Operation at case temperatures above these values may adversely affect the drives ability to meet specifications.

The MTBF specification for the drive is based on operating in an environment that ens ures that the case temperatures are not e xceeded. Occasio nal excursions to dr ive ambient tempe ratures of 122°F 41°F (5°C) may occur without impact to specified MTBF . Air flow may be needed to achieve these temperatures. Continual or su staine d op erati on at c as e t emp eratur es a bov e t hese v al ues m ay deg rade MT BF. The maximum allowable continuous or sustained HDA case temperature for the rated MTBF is 122°F

To con firm that the required cooling for the electronics and HDA is pro vided, place the drive in its final mechanical configurati on, perform random write/read oper ations . After the temp eratu re s stabiliz e, meas ur e the HDA case temperature of the drive.

The maximum allowabl e HDA c ase temperature is 60°C. Op erati on of t he drive at the maximu m c as e t emperature is intended for short time periods only. Continuous operatio n at the elevated temperatures will reduce product reliabili ty.

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.

82°F (28°C).

(50°C) or

(50°C)

HDA Temp. Check Point

Figure 10. Location of the HDA temperature check point

Savvio SCSI Product Manual, Rev. C 31

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 20% per hour.

b. Non-operating

5% to 95% non-condensing relative humidity.

6.4.3 Effective altitude (sea level)

a. Operating

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

b. Non-operating

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

6.4.4 Shock and vibration

Shock and vibration 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 s how n i n Figu re 11, and in accorda nce with the restrictions of Sec ti on 8.3 . O rie ntation of th e side opposite the I/O connector 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 20 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 275 Gs at a ma ximum duration of 2 msec ( 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.

The drive subjected to non repetiti ve shock not excee ding 150 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.

32 Savvio SCSI Product Manual, Rev. C

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 of 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.

Figure 11. Recommended mounting

Savvio SCSI Product Manual, Rev. C 33

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 - 500 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, zero to peak)

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 - 500 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

5-500 Hz @ 3.00 G (zero to peak) Vibration may be applied in the X, Y, or Z axis. Non-operating translational random flat profile 10 - 500 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 caution ex posing any electr onic compo nents to uncontrolled chem ical pollutants and corr osive chemicals as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold films us ed i n Seagate produc ts are especi ally sens itiv e to the presen ce of sul fide, 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 corrosive compo unds ss hould be minim ized or eli minate d. The usefu l life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free alternatives.

34 Savvio SCSI Product Manual, Rev. C

6.4.7 Acoustics

Sound power during idle mode shall be 3.5

bels typical when measured to ISO 7779 specification.

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 belo w. Refer to Figures 12 for detailed mou nting configuration dimensions. See Section 8.3, “Drive mounting.”

Height: 0.583 in 15 mm Width: 2.76 in 70.1 mm Depth: 4.40 in 111.7 mm Weight: 0 .49 pounds 0.22 kilogra ms

Savvio SCSI Product Manual, Rev. C 35

2x M3 x 0.5-6H .100 MIN

K Z X Y

2x J

AA AB

A B C E F G H

L M N P Q R S T U V

Dimension Table

Inches

2.755 +/- 0.005

3.945 +/- 0.005

0.583 +/- 0.008

3.072 +/- 0.005

0.118 +/- 0.005

2.520

0.177

0.295

0.014

0.118

0.379

3.395

0.394 +/- 0.005

3.395

0.379

0.160

2.590

0.945 +/- 0.020

2.618 +/- 0.011

0.276 +/- 0.008

0.157 +/- 0.020

100.20

Millimeters

69.98

14.81

78.03

3.00

64.01

4.50

7.49

0.36

3.00

9.63

86.23

10.01

86.23

9.63

4.06

65.79

24.00

66.50

7.00

3.99

+/- 0.13 +/- 0.13 +/- 0.20 +/- 0.13 +/- 0.13

+/- 0.13

+/- 0.51 +/- 0.28 +/- 0.20 +/- 0.51

2x L

2x M

2x N

4x M3 x 0.5-6H .100 MIN

K Z X Y

2x Q

4x M3 x 0.5-6H .120 MIN

K Z X Y

2x R

2x T

2x S

Figure 12. Mounting configuration dimensions

36 Savvio SCSI Product Manual, Rev. C

7.0 Defect and error management

The drive, as delivered, complies with this specification. The read error rate and specified storage capacity are not dependent upon use of defect management routines by the host (initiator).

Defect and error mana gement in the SCSI system invol ves the drive internal defect/err or management and SCSI systems error co nsiderations (errors in communications between Initiator and the drive). Tools for use in designing a defect/error management plan are brie fly outl in ed in this s ect ion , with re ferenc es to oth er secti ons where further details are given.

7.1 Drive internal defects

During the initial drive format operation at the factor y, media defects are identified, tagged as being unusable , and their locations rec orded on the drive prima ry defects list (referred to as the “ P” list and also as the ETF defect list). At factory format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the 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 (see the SCSI Command Reference Manual).

7.2 Drive error recovery procedures

Whenever an error occ urs during drive ope ration, the drive, if p rogrammed to do so , performs error re covery procedures to att empt to recov er the data. T he error recovery procedures used depend o n the option s previously set up in the error recovery parameters mode page. Error recovery and defect management may involve the use of several SCSI commands, the details of which are described in the SCSI Command Reference Man- ual. The drive i mplements sel ectable error rec overy time limits such as ar e required i n video appl ications. F or additional informati on on this, refer to the Err or Recove ry Page table in the SCSI Comm and Reference M an- ual, which describes the Mode Select/Mode Sense Error Recovery parameters.

The error recovery scheme supported by the drive provides a means to control the total error recovery time for the entire command in addition to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a com mand can be limited via t he Recovery Time Limit bytes in the Er ror Rec ov ery Mod e Page. The total amount of time s pent in error recovery for a single LBA ca n be limited via the Read Retry Count or Write Retry Count bytes in the Error Recovery Mode Page.

The drive firmware error recovery algorithms consist of 11 levels for read recoveries and 5 levels for writes. Table 3 equates the R ead and Write Re try Count with th e max imum pos sible r ecovery time f or read and wr ite

recovery of individual LBAs. The times given do not include time taken to perform reallocations, if reallocations are performed. Reallocations are performed when the ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the Recovery Time Limit for the command has not ye t been met. Time needed to perform reallocation is not counted against the Recovery Time Limit.

The Read Continuous (RC) bit, when s et to one, requ ests the disc drive to tra nsfer the requested da ta length without adding delay s (for retries or ECC correcti on) that may be required to in sure data integrity. The disc drive may send erro neous data in order to maintain the c ontinuous flow of data. The RC bit shou ld only be

Savvio SCSI Product Manual, Rev. C 37

used when data integrity is not a concern and s peed is of utmost im portance. If the Recovery Time Limit or retry count is reached duri ng error recovery, the state of the RC bit is examined. If the RC bit is set, the drive will transfer the unreco vered data with n o error indicatio n and co ntinue to execu te the remai ning command . If the RC bit is not set, the drive will st op data transfer with the last good LBA, and report a “Check Condition , Unrecovered Read Error.”

Table 3: Read and write retry count maximum recovery times [1]

Read retry count [1]

0 77.7 0 35.9 1 89.7 1 53.8 2305 283.7 3353 3101.7 4401 4179.4 5 419 5 (default) 221.3 6466 7586 8676 9724 10 777 1 1 (def aul t) 1,591

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 is allowed to take up to 401 msec recovery time for each of the four LBAs in the command. If the reco very ti me lim it is set to 0 0 C8 hex (200 m sec dec imal) a four LB A rea d comm and is allowed to take up to 200 msec for all err or re co very with in tha t command. The use of the Recover y Time Limit field allows f iner granularity on control of the time spent in error reco very. The recovery tim e limit only starts counting when the dr ive is executi ng error recove ry and it resta rts on each command . Therefore, each command’s total re covery ti me is subjec t to the recov ery tim e lim it. Note : A reco very ti me li mit of 0 will use the drive’s defa ult value of FF FF. Minimum recovery time limit is achieved by setti ng the Recovery Time Limit field to 00 01.

7.3 SCSI systems errors

Information on the reporting of op erational errors or faults across the interface is given in the SCSI Inte rface Product Manual. Message Pr otoc ol Sy s tem i s desc r ib ed in the S CSI Comm and Re fer en ce Manu al . Several of

the messages are used in the SCSI systems error management system. The Request Sense command returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive.

Status returned by the drive to the Initiator is de scr ib ed in the SCSI Interface Product Man ual . Status reporting plays a role in the SCSI s yste ms err or manage men t and i ts use in that re spect i s des cribed in sec tions wh ere the various commands are discussed.

38 Savvio SCSI Product Manual, Rev. C

8.0 Installation

Note. These driv es are designed to be used only on single-ended (SE) or low voltage differen tial (LVD)

busses. Do not install these drives on a high voltage differential (HVD) bus.

The first thing to do when installing a drive is to set the drive SCSI ID and set up certain operating options. This is done via the drive to host I/O signals.

Configure drive options

Drive default mode parameters are not normally needed for installation. Refer to Section 9.3.2 for default mode parameters if they are needed.

• Ensure that the SCSI ID of the driv e is not the same as the host adapter. Most host adapters us e SCS I ID 7 because ID 7 is the highest priority on both 8 and 16 bit data buses.

• If multiple devices are on the bus set the drive SCSI ID to one that is not presently used by other devices on the bus.

• If the drive is the only device on the bus, attach it to the end of the SCSI bus cable. The user, system integrator, or host equipment manufacturer must provide external terminators.

Note. For additional information about terminator requirements, refer to Sections 9.8 and 9.8.1.

• Installation instructions are provided by host system documentation or with any additionally purchased drive installation software. If necessary see Section 10.0 for Seagate support services telephone numbers.

• Do not remove the manufa cturer’s installed labels from the drive and do not cover wi th addit ional l abels , as the manufacturer labels contain information required when servicing the product.

Formatting

• It is not necessary to low le vel fo rmat th is dri ve. The d riv e is shi pped from the factory low le vel fo rmatte d in 512 byte sectors.

• Reformat the drive if a different spare sector allocation scheme is selected.

• High level formatting the drive involves assigning one or more partitions or logical drives to the drive volume. Follow the instructions in the system manuals for the system into which the drive is to be installed.

8.1 Drive orientation

The balanc ed r otary arm ac t ua t or de si g n of th e drive allows i t t o be mou n t ed i n any orientati on . Al l drive performance characterization, however, has been done with the drive in horizontal (discs level) and vertical (drive on its side) orientations, and these are the two preferred mounting orientations.

8.2 Cooling

The host enclosure must di ss ipate he at fr om the drive . You should confirm that the host enclo sure is designed to ensure that the drive operates within the temperature measurement guidelines described in Section 6.4.1. In some cases, forced airf low may be required to keep tem peratures at or below the tempe ratures specified in Section 6.4.1.

Savvio SCSI Product Manual, Rev. C 39

If forced air is nece ssary, possible air-flow patterns are s hown in Figur e 13. 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.

Above un

ote. 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 13. Air flow (suggested)

Under uni

Above unit

Under unit

8.3 Drive mounting

Use M3 x .5 metric screws to mount the drive using the side, bottom, or end mou nting holes. Select a screw length that results in a minimum th read engagem ent of 0.12 in ches when u sing the si de-mounting holes or a minimum thread enga gement of 0.10 inches when using the bottom or end mounting holes. Use a maximu m torque of 4.5 +/- .45 in lbs. If the screws are torqued above the specified values, threads could be stripped.

Note. Before mounting the drive in any kind of adapter frame, verify that the drive can meet the shock and

vibration specifications while mounted in the adapter frame.

8.4 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 HD A an d P CBA with no el ec trically 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.

40 Savvio SCSI Product Manual, Rev. C

9.0 Interface requirements

This section describes the drive-specific interface requirements as implemented on the drive.

9.1 General description

This section descr ibes in essential ly general terms the interface requ irements supported by the Savvio SCS I. No attempt is made to de scrib e all o f the mi nute deta ils of co nditio ns and cons train ts that mus t be co nside red by designers when designing a syste m in which this family of drives c an properly ope rate. Seagate decl ares that the drives operate in accordance with the appropriate ANSI Standards referenced in various places herein, with exceptions as noted herein or in the Seagate SCSI Interface Produc t Manual .

Savvio SCSI Product Manual, Rev. C 41

9.2 SCSI interface messages supported

Table 12 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Savvio SCSI family drives.

Table 12: SCSI messages supported by Savvio SCSI family drives

Message name Message code Supported

Abort 06h Y Abort-tag 0Dh Y Bus device reset 0Ch Y Clear ACA 16h N Clear queue 0Eh Y Command complete 00h Y Continue I/O process 12h N Disconnect 04h Y Extended messages 01h[1] Y Identify 80h-FFh Y Ignore wide residue (two bytes) 23h Y Initiate recovery 0Fh N Initiator detected error 05h Y Linked command complete 0Ah Y Linked command complete with flag 0Bh Y Message parity error 09h Y Message reject 07h Y Modify da ta pointer [1] N No operation 08h Y

Parallel Protocol Request Y

Queue tag messages (two bytes)

ACA 24h N Head of queue tag 21h Y Ordered queue tag 22h Y

Simple queue tag 20h Y Release recovery 10h N Restore pointers 03h Y Save data pointer 02h Y Synchronous data transfer req. [1] Y Target transfer disable 13h N Termin ate I/O proces s 11h N Wide data transfer request [1] Y

Notes.

[1] Extended messages (see the SCSI Command Reference Manual). [2] Supports all options except qas_req and iu_req.

42 Savvio SCSI Product Manual, Rev. C

9.3 SCSI interface commands supported

Table 13 following lists the SCSI interface commands that are supported by the drive. OEM standard drives are shipped set to operate in Ultra320 mode.

Table 13: Commands supported by Savvio SCSI family drive

Command name Command code Supported

Change Definition 40h N Compare 39h N Copy 18h N Copy and Verify 3Ah N Format Unit [1] 04h Y DPRY bit supported N DCRT bit supported Y STPF bit supported Y IP bit supported Y DSP bit supported Y IMMED bit supported Y VS (vendor specific) N Inquiry 12h Y

Date Code page (C1h) Y

Device Behavior page (C3h) Y

Firmware Numbers page (C0h) Y Implemented Operating Def page (81h) Y Jumper Settings page (C2h) Y Supported Vital Product Data page (00h) Y

Unit Serial Number page (80h) Y Lock-unlock cache 36h N Log Select 4Ch Y

PCR bit Y

DU bit N

DS bit Y

TSD bit Y

ETC bit N

TMC bit N

LP bit N Log Sense 4Dh Y

Application Client L og page (0Fh) Y Buffer Over-run/Under-run page (01h) N

Cache Statistics page (37h) Y Factory Log page (3Eh) Y Last n Deferred Errors or Asynchronous Events page (0Bh) N

Savvio SCSI Product Manual, Rev. C 43

Table 13: Commands supported by Savvio SCSI family drive (Continued)

Command name Command code Supported

Last n Error Events page (07h) N

Non-medium Error page (06h) Y Pages Supported list (00h) Y Read Error Counter page (03h) Y

Read Reverse Error Counter page (04h) N

Self-test Results page (10h) Y Start-stop Cycle Counter page (0Eh) Y Temperature page (0Dh) Y Verify Error Counter page (05h) Y

Write error counter page (02h) Y Mode Select (same pages as Mode Sense 1Ah) 15h Y [2] Mode Select (10) (same pages as Mode Sense 1Ah) 55h Y Mode Sense 1Ah Y [2]

Caching Parameters page (08h) Y

Control Mode page (0Ah) Y

Disconnect/Reconnect (02h) Y

Error Recovery page (01h) Y

Format page (03h) Y Information Exceptions Control page (1Ch) Y

Notch and Partition Page (0Ch) N

Port Control Page (19h) Y

Power Condition page (1Ah) Y

Rigid Disc Drive Geometry page (04h) Y

Unit Attention page (00h) Y

Verify Error Recovery page (07h) Y Xor Control page (10h) N Mode Sense (10) (same pages as Mode Sense 1Ah) 5Ah Y Prefetch 34h N Read 08h Y Read Buffer (modes 0, 2, 3, Ah and Bh supported) 3Ch Y Read Capacity 25h Y Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read Extended 28h Y DPO bit supported Y FUA bit supported Y Read Long 3Eh Y Reassign Blocks 07h Y Receive Diagnostic Results 1Ch Y

44 Savvio SCSI Product Manual, Rev. C

Table 13: Commands supported by Savvio SCSI family drive (Continued)

Command name Command code Supported

Supported Diagnostics pages (00h) Y

Translate page (40h) Y Release 17h Y Release (10) 57h Y Report LUNS A0h Y Request Sense 03h Y

Actual Retry Count bytes Y

Extended Sense Y

Field Pointer bytes Y Reserve 16h Y

3rd Party Rese r v e Y

Extent Reservation N Reserve (10) 56h Y 3rd Party Reserve Y Extent Reservation N Rezero Unit 01h Y Search Data Equal 31h N Search Data High 30h N Search Data Low 32h N Seek 0Bh Y Seek Extended 2Bh Y Send Diagnostics 1Dh Y

Supported Diagnostics pages (00h) Y

Translate page (40h) Y Set Limits 33h N Start Unit/Stop Unit (spindle ceases rotating) 1Bh Y Synchronize Cache 35h Y Test Unit Ready 00h Y Verify 2Fh Y BYTCHK bit Y Write 0Ah Y Write and V erify 2Eh Y DPO bit Y Write Buffer (modes 0, 2, supported) 3Bh Y Firmware Download option

(modes 5, 7, Ah and Bh supported) [3] Write Extended 2Ah Y DPO bit Y FUA bit Y

Savvio SCSI Product Manual, Rev. C 45

Table 13: Commands supported by Savvio SCSI family drive (Continued)

Command name Command code Supported

Write Long 3Fh Y Write Same 41h Y PBdata N LBdata N XDRead 52h N XDWrite 50h N XPWrite 51h N

[1] The drive can format to any even number of bytes per sector from 512 to 528. [2] Tables 15 show how individual bits are set and which are changeable by the host. [3] WARNING: A power loss during flash programm ing ca n re su lt i n fi rmwar e c orru pti on. This usually makes

the drive inoperable.

46 Savvio SCSI Product Manual, Rev. C

Table 14 lis ts the Standar d Inquiry command data that the drive should retur n to the initiator per the format given in the SCSI Interface Product Manual, part number 75789509, Inquiry command section.

Table 14: Savvio SCSI family drive Standard Inquiry data

Bytes Data (HEX)

0-15 00 00 [03]1[12]28B 00 01 3E 53 45 41 47 41 54 45 20 VENDOR ID

16-31 53 54 [39] [37] [33] [34] [30] [31] [4C] [43] 32-47 R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00 48-63 000000 00 0000000000 00 000000000000 64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80-95 000000 00 0000000000 00 000000000000 96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 [32] COPYRIGHT 112-127 [30] [30] [34]420 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

[]

03 means SCSI-3 (Ultra160) implemented.

[20] 20 20 20 20 20 PRODUCT ID

Note. Seaga te has chosen to set this bit to 03, S CSI-3 (Ultra160) implem ented, rather than 04, SCSI- 4

(Ultra320) impleme nted, due to compatib ility issues with some hos t bus adapters. T his setting will not affect the Ultra320 functionality of the drive.

[]

The drive can be changed between these two configurations: 02 means response data in SCSI-2/SCSI-3 format. 12 means the drive uses the hierarchical addressing mode to assign LUNs to logical units (default is 12).

R# Four ASCII digits representi ng the la st four digits of the product F irmwa re Relea se num ber. This informa-

tion is also given in th e Vital Product Data page C0h, together w ith servo RAM and RO M release numbers.

S# Eight ASCII digits representing the eight digits of the product serial number.

[]

Bytes 18 through 26 reflect model of drive. The table above shows the hex values for Model ST973401LC. Refer to the values below for the values of bytes 18 through 26 of you particular model:

ST973401LC 39 37 33 34 30 31 4C 43 20 ST936701LC 39 33 36 37 30 31 4C 43 20

[]

9.3.1 Inquiry Vital Product data

Instead of the standard Inquiry data shown in Table 14, the initiator can reque st several Vital Product Data pages by setting t he Inqu ir y command EVPD bit to on e. T he SCS I Command Reference Ma nual li sts the Vital Product Data pages and describes their formats. A separate Inquiry command must be sent to the dr ive for each Vital Product Data page the initiator wants the drive to send back.

9.3.2 Mode Sense data

The Mode Sense c ommand provides a means for th e drive to repor t its operating parame ters to the initi ator. The drive maintains four sets of Mode parameters, Default values, Saved values, Current values and Changeable values.

Default values are har d coded i n the drive fi rmware that i s stored in flash EPROM nonvolat ile memor y on the drive PCBA. Default values can be changed only by downloading a complete set of new firmware into the flash EPROM. An initiator can request and receive from the drive a list of default value s and use those in a Mode Select command to set up new current and saved values, where the values are changeable.

Savvio SCSI Product Manual, Rev. C 47

Saved values are stored on the disc media using a Mode Sel ect command. Only parameter values that are allowed to be changed c an be chang ed by this meth od. See “Ch angeable v alues” defi ned below. Parameters in the saved values list that are not changeable by the Mode Select command get their values from the default values storage.

Current values are volat ile values currently being used by the dri ve to control its operation. A Mode Select command can be us ed to chan ge these val ues (only those tha t are change able). O riginall y, they are installed from saved or default values after a power on reset, hard reset, or Bus Device Reset message.

Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved values ca n be ch anged b y a Mod e Sel ect comma nd. A “ one” allows a c hange to a co rres pondi ng bit; a “zero” allows no change. For example, in Table 15 refer to Mode page 01, in the row entitled “CHG”. These are hex numbers representing the changeable values for mode page 01. Note that bytes 04, 05, 06, and 07 are not changeable, becaus e those fie lds ar e all zer os. If some c hangeab le cod e had a he x val ue EF, that equates to the binary pattern 1110 1111. If there is a zero in any bit position in the field, it means that bit is not changeable. Bits 7, 6, 5, 3, 2, 1, and 0 are changeable, because those bits are all ones. Bit 4 is not changeable.

Though the drive always reports non-zero values i n by tes 00 and 01, those particular bytes ar e ne ver c han geable.

The Changeable values list can only be changed by downloading new firmware into the flash EPROM. On standard OEM drives the Saved values are taken from the default values list and stored into the saved val-

ues storage location on the media prior to shipping. When a drive is powered up, it takes sav ed valu es from the medi a and store s them to th e cur rent va lues stor-

age in volatile memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the drive is up to speed and is “ready.” An attempt to do so results in a “Check Condition status being returned.

Note. Beca use th ere may be se vera l differen t versi ons o f drive contr ol firm ware i n the t otal popul ation o f

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 Ultra160 implementation (see the SCSI Command Reference Manual).

Definitions: DEF = Default value. Standard drives are shipped configured this way.

CHG= Changeable bits; indicates if current and saved values are changeable. Note. Saved values for OEM drives are normally the same as the default values.

48 Savvio SCSI Product Manual, Rev. C

Table 15: ST973401 Mode sense data

Bytes 000102030405060708091011121314151617181920212223

Mode Sense Data

Mode Page

01 DEF 01 CHG 81 0a f f f f 00 00 00 00 f f 0 0 f f f f

02 DEF 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00 02 CHG 82 0e f f f f 00 00 00 00 00 00 00 00 87 00 00 00

03 DEF 83 16 28 ec 00 00 00 14 00 00 02 be 02 00 00 01 00 b4 00 6c 40 00 00 00 03 CHG

04 DEF 84 16 00 c7 bc 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 31 00 00 04 CHG

07 DEF 87 0a 00 0b f f 00 00 00 00 00 f f f f 07 CHG 87 0a 0f f f 00 00 00 00 00 00 f f f f

08 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 08 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

0A DEF 8a 0a 02 00 00 00 00 00 00 00 06 18 0A CHG 8a 0a 03 f1 00 00 00 00 00 00 00 00

00 ae 00 10 00 00 00 08 08 8b b9 98 00 00 02 00

<------------------------------Mode Page Headers and Parameter Data Bytes---------------------------->

81 0a c0 0b f f 00 00 00 05 00 f f f f

83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

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

19 DEF 19 06 01 00 f f f f 00 00 19 CHG 19 06 00 00 f f f f 00 00

1A DEF 9a 0a 00 02 00 00 00 05 00 00 00 04 1A CHG 9a 0a 00 03 f f f f f f f f 00 00 00 00

1C DEF 9c 0a 10 00 00 00 00 00 00 00 00 01 1C CHG 9c 0a 9d 0f f f f f f f f f f f f f f f f f

00 DEF 80 06 00 00 0f 00 00 00 00 CHG 80 06 f7 40 0f 00 00 00

Read capacity data

08 8b b9 97 00 00 02 00

Savvio SCSI Product Manual, Rev. C 49

Table 16: ST936701 Mode sense data

Bytes 000102030405060708091011121314151617181920212223

Mode Sense Data

Mode Page

01 DEF 01 CHG 81 0a f f f f 00 00 00 00 f f 00 f f f f

02 DEF 82 0e 80 80 00 0a 00 00 00 00 00 00 00 00 00 00 02 CHG 82 0e f f f f 00 00 00 00 00 00 00 00 87 00 00 00

03 DEF 83 16 14 76 00 00 00 0a 00 00 02 be 02 00 00 01 00 87 00 6c 40 00 00 00 03 CHG

04 DEF 84 16 00 c7 bc 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 31 00 00 04 CHG

07 DEF 87 0a 00 0b f f 00 00 00 00 00 f f f f 07 CHG 87 0a 0f f f 00 00 00 00 00 00 f f f f

08 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 08 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

0A DEF 8a 0a 02 00 00 00 00 00 00 00 03 19 0A CHG 8a 0a 03 f1 00 00 00 00 00 00 00 00

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

<------------------------------Mode Page Headers and Parameter Data Bytes---------------------------->

81 0a c0 0b f f 00 00 00 05 00 f f f f

83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

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

19 DEF 19 06 01 00 f f f f 00 00 19 CHG 19 06 00 00 f f f f 00 00

1A DEF 9a 0a 00 02 00 00 00 05 00 00 00 04 1A CHG 9a 0a 00 03 f f f f f f f f 00 00 00 00

1C DEF 9c 0a 10 00 00 00 00 00 00 00 00 01 1C CHG 9c 0a 9d 0f f f f f f f f f f f f f f f f f

00 DEF 80 06 00 00 0f 00 00 00 00 CHG 80 06 f7 40 0f 00 00 00

Read capacity data

04 45 dc cb 00 00 02 00

50 Savvio SCSI Product Manual, Rev. C

9.4 SCSI bus conditions and miscellaneous features supported

Asynchronous SCSI bus cond itions supp orted by th e drive are li sted be low. These conditio ns ca use the SCSI device to perform certain actions and can alter the SCS I bus phase sequenc e. Other mis cellan eous ope ratin g features supported are also listed here. Refer to the SCSI Interface Product Manual for details.

Table 4: SCSI bus conditions and other miscellaneous features

SCSI-2/SCSI-3 Conditions or feature

Y Adaptive Caching Y Arbitrating System Y Asynchronous Data Transfer N Asynchronous Event Notification Y Attention Condition N Auto Contingent Allegiance Condition Y Contingent Allegiance Condition Y Deferred Error Handling Y Disconnect/Reconnect N High voltage differential (HVD) interface available Y Low voltage differential (LVD) interface available Y Parameter Rounding (controlled by the Round bit in Mode Select page 0) Y Queue tagging (up to 64 Queue tags supported) Y Reporting actual retry count in Extended Sense bytes 15, 16 and 17. Y Reset Condition Y Segmented Caching Y Synchronous Data Transfer N Zero Latency Read

SCSI-2/SCSI-3 Status supported

Y Good Y Check Condition Y Condition Met/Good YBusy Y Intermediate/Good Y Intermediate/Condition Met/Good Y Reservation Conflict Y Queue Full N ACA Active

9.5 Synchronous data transfer

The data transfer period to be used by the drive and the initiator is established by an ex change of messa ges during the Message P hase of operation. S ee the section on message protocol in the SCSI Interfac e Product Manual, part number 75789509.

Savvio SCSI Product Manual, Rev. C 51

9.5.1 Synchronous data transfer periods supported

In the following tables, M is the synchronous period value (in the transfer rate negotiation message) that represents the associated transfer period and transfer rate values.

Table 17 lists the synchronous data transfer periods supported by the drive in DT DATA phase. DT DATA phase is only allowed when using the LVD interface.

Table 17: Synchronous DT DATA transfer periods

M (decimal)

Transfe r period (nanoseconds)

Tr ansfe r rate (megatransfers/second)

Transfer rate (Mbytes/second) on wide bus

8 6.25 160.0 320.0 9 12.5 80.0 160.0 10 25 40.0 80.0 12 50 20.0 40.0 25 100 10.0 20.0

Table 18 lists the synchronous data transfer periods supported by the drive in ST DATA phase. ST DATA phase is allowed with either LVD or SE interface except as noted.

Table 18: Synchronous ST DATA transfer periods

M (decimal)

Transfe r period (nanoseconds)

10 25 40.0

Tr ansfe r rate (megatransfers/second)

12 50 20.0 25 100 10.0 50 200 5.0

1. This transfer rate is only allowed when using the LVD interface.

9.5.2 REQ/ACK offset

Savvio SCSI family drives support REQ/ACK offset values from

7 to 63 (3Fh). Offsets of 1 through 6 are nego-

tiated to 0 (asynchronous transfer).

9.6 Physical interface

This section describes the co nnectors, cables, signals, terminator s and bus timing of the DC and SCSI I/O interface. See Section 9.8 and Section 9.8.1 for additional terminator information.

Figure 14 shows the location of the SCSI interface connector. Details of the physi cal, electrical and logical cha racteristics are given in sectio ns following, while the SCSI

operational aspects of Seagate drive interfaces are given in the SCSI Interface Product Manual.

9.6.1 DC cable and connector

SFF.1 LC model drives receive power through the 80-pin I/O connector. See Tables 20 and 21.

52 Savvio SCSI Product Manual, Rev. C

Figure 14. Physical interface (80-pin SCSI I/O connector)

9.6.2 SCSI interface physical description

Savvio SCSI drives support the physical interface requirements of the Ultra320 SCSI Parallel Interface-4 (SPI-

4), and operate compatibly at the interfa ce with devices that support ear lier SCSI-2 and SCSI-3 standards. It should be noted that t his i s o nly tr ue if the s y stems en gin eer i ng h as bee n c orre ct ly don e, and if earlier SCSI -2 and SCSI-3 devices respond in an acceptable manner (per applicable SCSI Standards) to reject newer Ultra320 protocol extensions that they don’t support.

The drives documented in this manual support single-ended and low voltage differential physical interconnects (hereafter referred to as SE and LVD, respectively) as described in the corresponding ANSI SPI document referenced in the precee ding paragraph. These drives implemen t driver and receiver circuits that can oper ate either SE or LVD. However, they cannot switch dynamically between SE and LVD operation.

The drives typically operate on a daisy-chain interface in which other SCSI devices are also operating. Devices on the daisy chain mu st all operate in the s ame mode, either SE or LVD, but not a mixture o f these. On the interface daisy chain, all signals are common between all devices on the chain, or bus, as it is also called. This daisy chain of SCSI de vices must be t erminated at bot h ends with the p roper impedance in order to operat e correctly. Do not terminate intermediate SCSI devices. LC mo del drives do not have onboard ter mination circuits. Some type of external termination circuits must be provided for these drives by the end user or designers of the equipment into which the drives will be integrated. See the ANSI T10 Standard referenced above for the maximum number of devices that can successfully operate at various interface transfer rates on SE and LVD daisy chains.

LC model drives plug in to PCBA or bul khead con nector s in th e host. The y may b e conne cted in a daisy chai n by the host backplane wiring or PCB A circu it runs that hav e adequ ate DC curren t carry ing capacity to support the number of drives plug ged into the PCBA or bulkhead connec tor s. A si ngl e 80 -p in I/O connector cable cannot support the DC current needs of sev eral dr ives , so no dai sy chain cables beyond the bulk hea d co nnec to rs should be used. A single drive connected via a cable to a host 80-pin I/O connector is not recommended.

Savvio SCSI Product Manual, Rev. C 53

Table 19 shows the interface transfer rates supported by the various drive models defined in this manual.

Table 19: Interface transfer rates supported

Maximum transfer rate

Interface type/ drive models

ST973401LC

Asynchronous Fast-5 Fast-10

yes yes yes yes no no no

Fast-20 (Ultra)

Fast-40 (Ultra2)

Fast-80 (Ultra160)

Fast-160 (Ultra320)

ST936701LC

LVD

ST973401LC

yes yes yes yes yes yes yes

ST936701LC

9.6.3 SCSI interface cable requirements

The characteristics of cables used to connect parallel interface drives are discussed in the ANSI standards referenced in this section.

9.6.3.1 Cable requirements

The 80-pin connector option pr ovided on LC models is intended for use on drives that plug directly into bac kplane connector in t he hos t equipmen t. In such installati ons, all backplane wi ring segm ents are sub ject to th e electromagnetic conc epts presented in Standard T10/1365D, Rev. 3, Section 6. Installations with connectors on cables are not recommended.

9.6.4 Mating connectors

Part numbers for the different type connectors that mate with the various Savvio SCSI I/O connectors are given in the sections following.

9.6.4.1 Mating connectors

The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adjacent contacts 50 (1.27 mm) mils apart (see Fi gure 15 ). I/O co nne cti on using a cable is not recommended . The length and size of the host equ ipment DC power car rying conductors from the DC power source to th e host equipment 80-pin disc drive interface connector(s) should be strictly designed according to proper power transmission design con cepts. No pos sibility f or the equi pment user t o attach an 8 0-pin cabl e/connector should be allowed, since the l ength of the DC power carrying cond uctors could not be controlled an d therefore could become too long for safe po wer transm ission to the dri ve. Daisy -chain 80-c onductor c ables sho uld esp ecially not be allowed, since the p ower-carryi ng conductors on the 80-conducto r interface we re not intend ed to support a series of drives.

To in sure that both drive c onnector and ho st equ ipm ent mating co nnector m ate pr operly, both drive connector and host equipment mating connector must meet the provisions of “SFF-8451 Specification for SCA-2 Unshielded Connections.” To obtain this specification, visit the following web site: www.sffcommittee.org

Recommended mating 80-position PCBA mount connectors:

Straight-in connector Hot plug version (with ground guide-pin)

Seagate P/N: 77678703 Amp US P/N: or Amp US P/N: or

2-557103-1 94-0680-02-1 2-557103-2 94-0680-02-2

787311-1 with polarization 787311-2 without polarization

Amp Japan P/N: 5-175475-9

54 Savvio SCSI Product Manual, Rev. C

Right-angle to PCBA connectors

Seagate P/N: 77678559 Amp US P/N: 2-557101-1 Amp Japan P/N: 5-175474-9 For additional information call Amp FAX service at 1-800-522-6752.

7.00

(.276)

Pin 1

0.15

62.15

(2.447)

0.15

Housing

MYM

—Y—

– 0.15 (– .005)

MYM

57.87

(2.278)

Grounding

0 —0.15 + .000

[

— .006

Pins

[

of Datum Y

12.70 (.500)

2.15–0.10 2 places

End View

Front View

Insert mating I/O connector

Top View

ontact

0.50

(.020)

0.3

MYM

(.012)

Pin 1 Pin 40

Pin 41 Pin 80

Figure 15. Nonshielded 80-pin SCSI “SCA-2” connector

Savvio SCSI Product Manual, Rev. C 55

1.27 (.05)

Typ

of Datum Y

Grounding

Pins

Back Vie

Table 20: 80-pin single-ended (SE) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low.

Connector Signal name [1]

contact

number [3]

Signal number [3]

Contact name[1]

12 V CHARGE 1 41 12 V GND 12 V 2 42 12 V GND 12 V 3 43 12 V GND 12 V 4 44 MATED 1 [12] NC [10] 5 45 NC [10] NC [10] 6 46 DIFFSNS [8] –DB11 7 47 GND –DB10 8 48 GND –DB9 9 49 GND –DB8 10 50 GND –I/O 11 51 GND –REQ 12 52 GND –C/D 13 53 GND –SEL 14 54 GND –MSG 15 55 GND –RST 16 56 GND –ACK 17 57 GND –BSY 18 58 GND –ATN 19 59 GND –DBP 20 60 GND –DB7 21 61 GND –DB6 22 62 GND –DB5 23 63 GND –DB4 24 64 GND –DB3 25 65 GND –DB2 26 66 GND –DB1 27 67 GND –DB0 28 68 GND –DP1 29 69 GND –DB15 3070GND –DB14 3171GND –DB13 3272GND –DB12 3373GND +5 V 3474MATED 2 +5 V 35755 V GND +5 V 36765 V GND NC [10] 37 77 ACTIVE LED OUT [4] [9] RMT-START [5] [9] [12] 38 78 DLYD-START [6] [9] [12] SCSI ID (0) [7] [9] [12] 39 79 SCSI ID (1) [7] [9] [12] SCSI ID (2) [7] [9] [12] 40 80 SCSI ID (3) [7] [9] [12]

Notes [ ]: See page following Table 21.

56 Savvio SCSI Product Manual, Rev. C

Table 21: 80-pin single-ended (LVD) I/O connector pin assignments [11] Note. A minus sign preceding a signal name indicates that signal is active low.

Connector Signal name [1]

contact

number [3]

Signal number [3]

Contact name[1]

12 V CHARGE 1 41 12 V GND 12 V 2 42 12 V GND 12 V 3 43 12 V GND 12 V 4 44 MATED 1 [12] NC [10] 5 45 NC [10] NC [10] 6 46 DIFFSNS [8] –DB11 7 47 +DB11 –DB10 8 48 +DB10 –DB9 9 49 +DB9 –DB8 10 50 +DB8 –I/O 11 51 +I/O –REQ 12 52 +REQ –C/D 13 53 +C/D –SEL 14 54 +SEL –MSG 15 55 +MSG –RST 16 56 +RST –ACK 17 57 +ACK –BSY 18 58 +BSY –ATN 19 59 +ATN –DBP 20 60 +DBP0 –DB7 21 61 +DB7 –DB6 22 62 +DB6 –DB5 23 63 +DB5 –DB4 24 64 +DB4 –DB3 25 65 +DB3 –DB2 26 66 +DB2 –DB1 27 67 +DB1 –DB0 28 68 +DB0 –DBP1 2969+DP1 –DB15 3070+DB15 –DB14 3171+DB14 –DB13 3272+DB13 –DB12 3373+DB12 +5 V 3474MATED 2 +5 V 35755 V GND +5 V CHARGE36765 V GND NC [10] 37 77 ACTIVE LED OUT [4] [9] RMT_START [5] [9] [12] 38 78 DLYD_START [6] [9] [12] SCSI ID (0) [7] [9] [12] 39 79 SCSI ID (1) [7] [9] [12] SCSI ID (2) [7] [9] [12] 40 80 SCSI ID (3) [7] [9] [12]

Notes [ ]: See page following this table.

Savvio SCSI Product Manual, Rev. C 57

Notes [ ] for Tables 20 and 21.

[1] See Section 9.6.4.1 for detailed electrical characteristics of these signals. [2] The conductor numb er refers to t he conduc tor positi on when usi ng 0.025-in ch (0.63 5 mm) ce nterline fla t

ribbon cable. Other cables types may be used to implement equivalent contact assignments. [3] Connector contacts are on 0.050 inch (1.27 mm) centers. [4] Front panel LED signal; indicates drive activity for host front panel hard drive activity indicator. [5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command). [6] Asserted by host to enable Delayed Motor Start option (motor starts at power on or after a delay of 12 sec-

onds times drive ID). This and [3] above are mutually exclusive options. [7] Binary code on A3, A2, A1 and A0 asserted by host to set up SCSI bus ID in drive. [8] GND provides a means for differential devices to detect the presence of a single ended device on the bus.

Drive will not operate I/O bus at Ultra2 or faster SCSI data rates if this is grounded. [9] Signals [4] through [7] are used in place of ins talling jumpers an d cables on opti on select co nnector J6.

See Section 8.1.1 notes. [10] “NC” means no connection. [11] 8 bit devices which are connected to the 16 data bit LVD I/O shall leave the following signals open: –DB8,

–DB9, –DB10, –DB11, –DB12, –DB13, –DB14, –DB15, and –DBP1.

8 bit devices which are connected to the 16 data bit single-ended (SE) I/O shall have the following signals

open: DB8, –DB9, –DB10, –DB11, –DB12, –DB13, –DB14, –DB15, and –DBP1.

All other signals should be connected as shown. [12] Pins 38, 39, 40 , 44, 78, 79, and 80 a re op tio n s el ect pi ns an d are tie d h igh by th e d rive c ircu itry. The pre-

ferred electrical 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.

9.7 Electrical description

Savvio SCSI drives are mul timode devices. That is, thei r I/O c ircu its ca n ope ra te as eith er si ngl e- en ded o r lo w voltage differential drivers/receivers (selectable using the I/O “DIFFSENS” line).

See ANSI Standard T10/1302D for detailed electrical specifications.

9.7.1 Multimode—SE and LVD alternatives

When the interface “D IFFSNS” line i s between -0.35 V and +0.5 V, the drive interface circuits operate singleended and up to and in cluding 20 M transfers /s (Fast-20 or Ultra SCS I). When “ DIFFSNS” is between +0.7 V and +1.9 V, the drive interface circuits operate low voltage differential and up to and including 160 M transfers/s (Fast-160 or U320 SCSI).

This multimode desi gn does not allo w dynami cally changi ng transm issi on mode s. Dri ves must operate only i n the mode for which the installation an d interface cabling is designed. Multimo de I/O circuits used by these drives do not operate at high voltage differential levels and should never be exposed to high voltage differential environments unless the common mode vo ltages in the environment are controlled to s afe levels for si ngleended and low voltage differential devices (see ANSI SPI-4 specification T10/1365D).

LC model drives do not have onboard terminators. Termination of the I/O lines must be provided for by the Host equipment designers or end users.

LVD output characteristics

Each differential sign al driven by LVD interface driv ers shall have the following outp ut characteristics when measured at the disc drive connector:

Steady state Low level output differential voltage = 0.320 V = < |V Steady state High level output differential voltage = 0.320 V = < |V

58 Savvio SCSI Product Manual, Rev. C

| = < 0.800 V (signal negation/logic 0)

| = < 0.800 V (signal assertion/logic 1)

L VD input characteristics

Each differential signal received by LVD interface receiver circuits shall have the following input characteristics when measured at the disc drive connector:

Steady state Low level input differential voltage = 0.030 V = < V Steady state High level input differential voltage = –3.6 V = < V Differential voltage = +

0.030 V minimum with common-mode voltage range 0.845 V = < Vcm = < 1.655 V.

(T10/1302D revision 14, section A.3.2).

VCCA VCCB

Single Ended Circuitry

Single Ended Ground Driver

Ground

Single Ended: LVD:

GND

+Signal

Figure 16. Typical SE-LVD alternative transmitter receiver circuits

LVD Signal Drivers

LVD

Receiver

LVD Signal Drivers

= < 3.6 V (signal negation/logic 0)

= < –0.030 V (signal assertion/logic 1)

Single Ended Receiver

—Signal —Signal

Single Ended Negation Driver

Single Ended Assertion Driver

9.7.1.1 General cable characteristics

The 80-pin connector option p rovided on LC models is inte nded for use on drives that plug directly into bac kplane connector in the hos t equipmen t. In such installati ons, all backpla ne wiring s egments are sub ject to th e electromagnetic conc epts pr esented i n Standard T10/1365D, Rev. 3, Section 6. For LC m odel d rives , installations with cables are not recommended.

9.7.1.2 Single-ended drivers/receivers

Single-ended I/O pin a ssignments are shown in Table 20. The LC model drives do not require an I/O cable. These models are designed to connect directly to a back panel connector.

9.8 Terminator requirements

These drives do not have onboard internal terminators. The user, systems integrator or host equipment manufacturer must provide a terminator ar rangement exter nal to the drive whe n termination is required. L C model drives are designed to be plugged into a backpanel connector without cabling.

9.8.1 Terminator power

These drives cannot fu rnish te rmin ator power becau se no cond uctor s in th e 80-pin I/O co nnecto r are dev oted to terminator power.

Savvio SCSI Product Manual, Rev. C 59

9.9 Disc drive SCSI timing

Table 22: Disc drive SCSI timing

These values are not current Savvio SCSI values, but are listed for information only.

Description

Waveform symbol [1]

Waveform table [1] Typical timing

Target Select Time (no Arbitration) T00 N/A <1 µs Target Select Time (with Arbitration) T01 4.5-1,2 1.93 µs Target Select to Command T02 4.5-1 3.77 µs Target Select to MSG Out T03 4.5-2 1.57 µs Identify MSG to Command T04 4.5-3 3.36 µs Command to Status T05 4.5-5 Command Dependent Command to Data (para. In) T06 4.5-9 Command Dependent Command to Data (para. Out) T07 4.5-10 Command Dependent Command to Data (Write to Data Buffer) T08 4.5-10 Command Dependent Command to Disconnect MSG T09 4.5-6 Command Dependent Disconnect MSG to Bus Free T10 4.5-6,14 0.52 µs Disconnect to Arbitration (for Reselect)

T1 1 4.5-6 Command Dependent

This measures disconnected CMD over head Target win Arbitration (for Reselect) T12 4.5-7 3.00 µs Arbitration to Reselect T13 4.5-7 1.60 µs Reselect to Identify MSG In T14 4.5-7 1.39 µs Reselect Identify MSG to Status T15 4.5-8 Command Dependent Reselect Identify MSG to Data (media) T16 4.5-11 Command Dependent Data to Status T17 4.5-15 Command Dependent Status to Command Complete MSG T18 4.5-5,8,15 0.98 µs Command Complete MSG to Bus Free T19 4.5-5,8,15 0.51 µs Data to Save Data Pointer MSG T20 4.5-14 4.00 µs Save Data Pointer MSG to Disconnect MSG T21 4.5-14 0.79 µs Command Byte Transfer T22 4.5-4 0.04 µs Next Command Byte Access: 4.5-4

Next CDB Byte Access (Byte 2 of 6) T23.6.2 4.5-4 0.58 µs

Next CDB Byte Access (Byte 3 of 6) T23.6.3 4.5-4 0.12 µs

Next CDB Byte Access (Byte 4 of 6) T23.6.4 4.5-4 0.12 µs

Next CDB Byte Access (Byte 5 of 6) T23.6.5 4.5-4 0.12 µs

Next CDB Byte Access (Byte 6 of 6) T23.6.6 4.5-4 0.12 µs

Next CDB Byte Access (Byte 2 of 10) T23.10.2 4.5-4 0.59 µs

Next CDB Byte Access (Byte 3 of 10) T23.10.3 4.5-4 0.11 µs ±1 µs

Next CDB Byte Access (Byte 4 of 10) T23.10.4 4.5-4 0.12 µs ±1 µs

Next CDB Byte Access (Byte 5 of 10) T23.10.5 4.5-4 0.11 µs ±1 µs

Next CDB Byte Access (Byte 6 of 10) T23.10.6 4.5-4 0.11 µs ±1 µs

Next CDB Byte Access (Byte 7 of 10) T23.10.7 4.5-4 0.13 µs ±1 µs

60 Savvio SCSI Product Manual, Rev. C

Table 22: Disc drive SCSI timing (Continued)

These values are not current Savvio SCSI values, but are listed for information only.

Description

Waveform symbol [1]

Waveform table [1] Typical timing

Next CDB Byte Access (Byte 8 of 10) T23.10.8 4.5-4 0.12 µs ±1 µs Next CDB Byte Access (Byte 9 of 10) T23.10.9 4.5-4 0.12 µs ±1 µs

Next CDB Byte Access (Byte 10 of 10) T23.10.10 4.5-4 0.12 µs ±1 µs Data In Byte Transfer (parameter) T24 4.5-12 0.04 µs Data Out Byte Transfer (parameter) T25 4.5-13 0.04 µs Next Data In Byte Access (parameter) T26 4.5-12 0.12 µs Next Data Out Byte Access (parameter) T27 4.5-13 0.12 µs Data In Byte Transfer (media) [2] T28 4.5-12 0.04 µs Data Out Byte Transfer (media) [2] T29 4.5-13 0.04 µs Next Data In Byte access (media [2] T30 4.5-12 0.12 µs Next Data Out Byte access (media [2] T31 4.5-13 0.12 µs MSG IN Byte Transfer T32 4.5-5,7,8,14,15 0.04 µs MSG OUT Byte Transfer T33 4.5-2 0.04 µs ST ATUS Byte Transfer T34 4.5-5,8,15 0.04 µs Synchronous Data Transfer Characteristics:

Request Signal Transfer Period [3] – – various (800 ns max)

Notes.

[1] See the Timing examples section of the SCSI Interface Product Manual. [2] Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3 of this manual. [3] Synchronous Transfer Period is determined by negotiations between an Initiator and a Drive. The Drive is

capable of setting periods as given in Section 9.5. See also the Synchronous data transfer section and the Extended messages sect ion of the SCSI Command Referenc e Manual for a des cription of sync hronous data transfer operation.

Savvio SCSI Product Manual, Rev. C 61

62 Savvio SCSI Product Manual, Rev. C

10.0 Seagate Technology support services

Online services

Internet

www.seagate.com for informatio n about Seagate products and servic es. Worldwide support is availab le 24

hours daily by e-mail for your questions.

Presales Support: www.sea Technical Support: www.sea

gate.com/support/email/email_presales.html or Presales@Seagate.com

gate.com/support/email/email_disc_support.html or DiscSupport@Seagate.com

mySeagate

my.seagate.com is the industry’s first Web portal desi gned specifically fo r OEMs and distribu tors. It provides self-service a ccess to cr itical app lications, personaliz ed content and the tool s that allo w our partner s to manage their Seagate account fun ctions. Submit prici ng requests, order s and returns through a singl e, passwordprotected Web interface—anytime, anywhere in the world.

reseller.seagate.com

reseller.seagate.com supports Seag ate resellers with produc t information, program benefi ts and sales tools. You may register for custom ized communications that are n ot available on the web. These c ommunications contain product la unch, EOL, pr icing, prom otions and oth er channel- related inf ormation. To learn more about the benefits or to register, go to reseller.sea

gate.com, any time, from anywhere in the world.

Automated phone services

SeaFONE® (1-800-SEAGATE) is the Seagate toll-free number (1-800-732-4283) to access our automated

directory assistance for Seagate Service Center support options. International callers can reach this service by dialing +1-405-324-477 0.

Seagate Service Centers

Presales Support

Our Presales Suppo rt staff can help you deter mine which Seagate products are best suited for your specific application or computer system, as well as drive availability and compatibility.

Technical Support

If you need help installing your dr ive, consult your system's doc ume ntation or contact the deal er's s upp or t services department for assista nce specific to your sy stem. Seagate techn ical support is also av ailable to assist you online at support.sea tion and your drive’s “ST” model number available.

SeaTDD™ (+1-405-324-3655) is a telecommuni catio ns de vice fo r the d eaf (TDD). You can send questions or comments 24 hours d aily and e xcha nge m essag es wi th a technic al s upport speci alist during nor mal b usine ss hours for the call center in your region.

Savvio SCSI Product Manual, Rev. C 63

gate.com or through one of our call centers. Have your system configuration informa-

Customer Service Operations

Warranty Service

Seagate offers worldwide customer supp ort for Seagate drives. Seagate dis tributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for warrantyrelated issues. Resell ers or end users of drive products should contact their plac e of purchase or one of th e Seagate CSO warranty center s for ass istance. Have your drive’s “ST” mod el numbe r and serial nu mber av ailable.

Data Recovery Services

Seagate offers data recovery services for all formats and all brands of storage media. Our Data Recovery Services labs are currently located in North America. To get a free quick quote or speak with a case manage men t representative, call 1-800-475-0143. Additional information, including an online request form and data loss prevention resources, is available at www.datarecovery.sea

gate.com.

Authorized Service Centers

In some locations outside the US, you can contact an Authorized Service Center for service.

USA/Canada/Latin America support services

Seagate Service Centers

Presales Support

Call center To ll-free Direct dial FAX

Americas 1-877-271-3285

+1-405-324-4730

+1-405-324-4704

Technical Support

Call center To ll-free Direct dial FAX

Americas 1-800-SEAGATE

+1-405-324-4700

+1-405-324-3339

Customer Service Operations

Warranty Service

Call center Toll-free Direct dial FAX / E-mail

USA, Canada, Mexico and 1-800-468-3472

Latin America

Brazil

Jabil Industrial Do Brasil — +55-11-4191-4761 +55-11-4191-5084

LTDA

Data Recovery Services

Call center To ll-free Direct dial FAX

USA, Canada, 1-800-475-01435 +1-905-474-2162 1-800-475-0158 and Mexico +1-905-474-2459

Hours of operation are 8:00 A.M. to 11:45 A.M. and 1:00 P.M. to 6:00 P.M., Monday through Friday (Central time).

Hours of operation are 8:00 A.M. to 8:00 P.M., Monday through Friday (Central time).

Hours of operation are 8:00 A.M. to 5:00 P.M., Monday through Friday (Central time).

Authorized Service Center

Hours of operation are 8:00 A.M. to 8:00 P.M., Monday through Friday, and 9:00 A.M. to 5:00 P.M., Saturday (Eastern time).

— +1-956-664-4725

SeagateRMA.br@jabil.com

64 Savvio SCSI Product Manual, Rev. C

European support services

For presales and technic al support in Europe , dial the Seagate Serv ice Center toll-free nu mber for your specific location. If yo ur location is not listed h ere, dial our presales and tech nical support call cen ter at +1-405324-4714 from 8:00

A.M. to 11:45 A.M. and 1:00 P.M. to 5:00 P.M. (Central Europe time) Monday through Friday.

The presales and technical support call center is located in Oklahoma City, USA. For European warranty service , dial the tol l-free numb er for you r specific locatio n. If your l ocation is not liste d

here, dial our Euro pean CS O warr an ty ce nter at +31-20-316-7222 from 8:30

A.M. to 5:00 P.M. (Central Europ e

time) Monday through Friday. The CSO warranty center is located in Amsterdam, The Netherlands.

Seagate Service Centers

Toll-free support numbers

Call center Presales and Technical Support Warranty Service

Austria — 00 800-47324289 Belgium 00 800-47324283 (00 800-4SEAGATE) 00 800-47324289 Denmark 00 800-47324283 00 800-47324289 France 00 800-47324283 00 800-47324289 Germany 00 800-47324283 00 800-47324289 Ireland 00 800-47324283 00 800-47324289 Italy 00 800-47324283 00 800-47324289 Netherlands 00 800-47324283 00 800-47324289 Norway 00 800-47324283 00 800-47324289 Poland 00 800-311 12 38 00 800-311 12 38 Spain 00 800-47324283 00 800-47324289 Sweden 00 800-47324283 00 800-47324289 Switzerland 00 800-47324283 00 800-47324289 Turkey 00 800-31 92 91 40 00 800-31 92 91 40 United Kingdom 00 800-47324283 00 800-47324289

FAX services—All Europe (toll call)

Technical Support +1-405-324-3339 Warranty Service +31-20-653-3513

Africa/Middle East support services

For presales and tec hnical suppo rt in Africa and the Midd le East, dia l our presal es and technic al support c all center at +1-405-32 4-471 4 from 8:00 day through Friday. The presales and technical support call center is located in Oklahoma City, USA.

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

A.M. to 5:00 P.M. (Centr al Euro pe time ) Mond ay throu gh Frid ay, or send a FAX to +31-20-653-

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-

Savvio SCSI Product Manual, Rev. C 65

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.

November through March (Australian Eastern time) Monday through Friday.

Seagate Service Centers

Call center Toll-free Direct dial FAX

Australia 1800-14-7201 — — China (Mandarin) Hong Kong 800-90-0474 — — Hong Kong (Cantonese)

2, 4

India

1, 4

800-810-9668 +86-10-6225-5336 —

1, 4

001-800-0830-1730 — — 1-600-180-1104 — —

Indonesia 001-803-1-003-2165 — —

3, 4

Japan Korea

3, 4

0034 800 400 554 — —

007 98 8521 7635 — — Malaysia 1-800-80-2335 — — New Zealand 0800-443988 — — Singapore 800-1101-150 — +65-6488-7525 Taiwan (Mandarin)

1, 4

00-800-0830-1730 — — Thailand 001-800-1 1-0032165 — —

Customer Service Operations

Warranty Service

Call center Toll-free Direct dial FAX

Asia/Pacific — +65-6485-3595 +65-6485-4860 Australia 1800-12-9277 — —

India

— +91-44-821-6164 +91-44-827-2461

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

Hours of operation are 9:00 A.M. to 6:00 P.M., Monday through Saturday.

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

Authorized Service Center

66 Savvio SCSI Product Manual, Rev. C

Publication feedback surv ey

We are interested in your comm ents and su ggesti ons rega rding this pu blic ation. P lease take a few minu tes to participate in our survey at the following URL:

http://survey.seagate.com/survey/techpubs.nsf

Thank you for your time and comments.

Savvio SCSI Product Manual, Rev. C 67

68 Savvio SCSI Product Manual, Rev. C

Index

Symbols

+5 and +12 volt supplies 26

Numerics

80 conductor connector 54 80 conductor interface 80-pin connector option 80-pin I/O connector

AC power 25 access time accessories acoustics activity indicator actuator actuator assembly address air cleanliness air flow

suggested altitude altitude and atmospheric pressure ambient ambient temperature ANSI SCSI documents asynchronous interface transfer rate audible noise Australia/New Zealand Standard automatic retry automatic shipping lock average idle current average latency average rotational latency

11 9, 10

9, 39

background processing 8 backward compatibility bits/inch buffer buffer segment buffer-full buffer-full ratio bulkhead connector bus device reset message bytes per sector bytes/surface bytes/track

13, 14

54, 59

56, 57

11, 12

cable 52 cache

13, 14

cache buffer cache miss cache mode cache operation cache operation hit cache segment caching write data Canadian Department of Communications capacities capacity, drive, programmable case temperature CE Marking changeable bit changeable value check condition circuits class B limit command command descriptor block (CDB) command queuing condensation conducted noise immunity connect/disconnect connector contact consecutive read operation contiguous blocks of data continuous vibration controller controller overhead controller self test cooling C-Tick Marking current current limiting current profile current requirements current value cylinder boundary

47, 48

12, 43

31, 32

25, 26

26, 27, 28

47, 48

daisy-chain 26, 53

80 conductor

data block size

modifing the data correction data transfer period data transfer protocol data transfer rate DC cable and connector DC current DC power

12, 17

Savvio SCSI Product Manual, Rev. C 69

DC power carrying conductor 54 DC power requirements DC power source dedicated landing zone default mode parameter default value defect/error management delayed motor start option depot repair depot repair philosophy diagnostics differentiating features dimensions disable read ahead disc access disc media disc rotational speed disconnect/reconnect

control

specification discontinuity (DISC) bit DRA bit drive

drive activity drive capacity

programmable drive default mode parameter drive failure drive firmware drive ID drive interface connector drive internal drive internal defects and errors drive malfunction drive mounting

constraints drive orientation drive primary defects list drive SCSI timing drive transfer drive volume drive warranty dynamic spindle brake

47, 48

19 26 35

35, 40 17

25, 58

ECC 17 ECC correction capability electrical charact eris tic s electromagnetic compatibility electromagnetic interference (EMI) electromagnetic susceptibility embedded servo EMC compliance EMI requirements environmental control

52, 58

environmental interference environmental limits environmental requirements EPROM equipment malfunction error error management system error rate error rate calculation error recovery ETF defect list European Union requirements EVPD bit execution time extended messages

47, 48

17, 18

fault status 17 FCC rules and regulations field repair firmware flat ribbon cable flaw reallocation format format command format time formatting front panel front panel LED

47, 48

GMR heads 7 gradient ground return grounding

31, 32

hard reset 48 hardware error HDA

7, 19, 40

high level format host

14, 37, 46, 53

host adapter host backplane wiring host equipment

DC power host I/O signal host system host system malfunction host/drive operational interface hot plug humidity

40, 54, 59

8, 19

31, 32

70 Savvio SCSI Product Manual, Rev. C

I/O connector 53 identified defect idle condition Input characteristics inquiry command inquiry vital product data installation installation guide installation instructions instantaneous current peak interface data interface requirements interface timing internal data rate

29, 30

5, 9, 10

mode sense command

mode sense command page 08h

mode sense data

mode sense value

model number table

motor start command

motor start delay option

motor start option

mounting configuration

mounting configuration dim ens ions

mounting constraints

MTBF

9, 17, 18, 31

multimode drivers and receivers

multiple segment

multi-segmented ca ch e control

47, 48

12, 25, 58

17, 40

jumper 58

landing zone 8 LB

logical

logical block logical characteristics logical segment (mode select page 08h) low level format low voltage differential (LVD) drivers and receivers LVD

LVD interface receiver circuits

13, 14

magnetoresistive heads 7 mating connector maximum current requirements maximum operating current maximum starting current mean time between failure. See MTBF media

8, 48

media defect media defect induced error medium error message protocol message protocol system messages

SCSI interface miscellaneous feat ures mode page 01 mode page 08h mode parameter

page 08h mode select command mode select page 08h

17, 18

13, 47, 48

noise 26

audible

non-operating

temperature

non-operating vibration

32, 34

office environment 34 operating operating environment operating option

operating parameter operator interventi on options orientation Output characteristics

32, 34

12, 32, 39

package size 33 package test specification packaged partition or logical drive PCB PCBA PCBA circuit run peak bits/inch peak starting current performance charact eris tic s performance degradation peripheral I/O cable physical buffer space physical characteristics physical damage physical interface physically contiguous blocks of data power power connector

40, 47, 53, 54

25, 26

Savvio SCSI Product Manual, Rev. C 71

power control switch 12 power dissipation power distribution power sequencing power supply voltage power-carrying condu cto r power-on power-on operating hours power-on reset power-up power-up hours prefetch prefetch (read look-ahead) prefetch ceiling field prefetch data prefetch field prefetch hit prefetch mode prefetch of contiguous blocks prefetch operation prefetch segmented cache control preventive maintenance PRML read channel electronics product data page programmable drive capacity

13, 14

29, 30

13, 14

17, 19

radio interference regulations 3 read

read command read data read error read error rate read operation read retry count read/write head ready

receive diagnostic results receiver circuits recommended mounting recoverable seek error reference documents regulation relative humidity reliability reliability and service reliability specifications repair facility repair information REQ/ACK offset request sense command request sense information resonance retrieved data

13, 14

17, 18, 37 13

S.M.A.R.T. 9, 20 safe power transmission safety

saved value Savvio SCSI Installation Guide SCSI

commands format commands interface data transfer rate

messages SCSI bus cable SCSI bus condition SCSI bus ID SCSI bus phase sequence SCSI command SCSI ID SCSI interface SCSI interface cable SCSI interface commands supported SCSI interface connector SCSI interface data SCSI Interface Product Manual SCSI systems error SCSI systems error consideration SCSI systems error management Seagate support service sector sector interleave sector sizes seek error seek positioning error segment self-contained Self-Monitoring Analysis and Reporting Technology.

SE-LVD alternative sense key sequential read operations service

life

philosophy

tools servo data shielding shipping shipping container shock

and vibration shock mount signal ground single unit shipping pack single-ended (SE) dr iver s and rece iv er s single-ended interface circuit site installation

47, 48

12, 17, 53

17, 18

See S.M.A.R.T.

17, 19

3, 5, 7

29, 30

72 Savvio SCSI Product Manual, Rev. C

software interleave 14 spare part spindle standard day standards start motor command start/stop time status stop spindle stop time storage capacity straight-in connector strict bit in Mode page 00h supply voltage support services synchronous data transfer synchronous data transfer operation synchronous data transfer period synchronous transfer period system chassis system recovery procedures

technical support serv ic es 63 temperature

ambient case gradient non-operating regulation

See also cooling temperature sensor termination terminator power terminator requirements thermal monitor tracks/inch tracks/surface, total transfer period transmitter receiver circuits typical access time

12, 21, 31

39, 59

vibration 32, 34 vital product data volatile memory voltage

12, 25

warranty 9, 24 wet bulb temperature wide Ultra320 SCSI interface wrap-around write caching write error

unrecoverable write operation write retry count

zoned bit recording (ZBR) 8

Ultra160 48 Ultra160 mode Ultra320 SCSI controller Ultra320 SCSI interface unformatted unrecoverable condition unrecoverable error unrecoverable seek error Unrecoverable write error

Savvio SCSI Product Manual, Rev. C 73

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

Publication Number: 100293075, Rev. C, Printed in USA

Seagate Savvio ST973401LC, Savvio ST936701LC Product Manual

Specifications and Main Features

Frequently Asked Questions

User Manual