Seagate MEDALIST 2160WC, MEDALIST PRO2160N User Manual

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Medalist 2160N (ST52160N)

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Medalist 2160WC (ST52160WC)

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SCSI Interface Drives

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Medalist 2160N (ST52160N)

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Medalist 2160WC (ST52160WC)

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SCSI Interface Drives

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2 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

registered trademarks of Seagate Technology, Inc. Ot her product names are trademarks or registered trademarks of their owners.

Seagate reserves the right to change, without notic e, product offerings or specifications. No part of this publication may be reproduced in any form without written permission from Seagate Technology, Inc.

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A iii

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specifications summary table . . . . . . . . . . . . . . . . . . . 3

1.0 Specifications summary . . . . . . . . . . . . . . . . . . . . . 5

1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Physical geometry . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Functional specifications . . . . . . . . . . . . . . . . . . . 5

1.4 Physical dimensions . . . . . . . . . . . . . . . . . . . . . . 6

1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.6 Read look-ahead and caching . . . . . . . . . . . . . . . . 7

1.7 Start/stop command . . . . . . . . . . . . . . . . . . . . . . 7

1.7.1 Power-up sequence . . . . . . . . . . . . . . . . . . . 7

1.7.2 Power-down sequence . . . . . . . . . . . . . . . . . . 8

1.7.3 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.8 Power management . . . . . . . . . . . . . . . . . . . . . . 8

1.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . 9

1.8.2 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . 9

1.8.3 Input noise . . . . . . . . . . . . . . . . . . . . . . . 10

1.9 Environmental . . . . . . . . . . . . . . . . . . . . . . . . 10

1.9.1 Ambient temperature (HDA case) . . . . . . . . . . . 10

1.9.2 Temperature gradient . . . . . . . . . . . . . . . . . . 10

1.9.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.9.4 Relative humidity . . . . . . . . . . . . . . . . . . . . 11

1.10 Shock and vibration . . . . . . . . . . . . . . . . . . . . 11

1.11 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.13 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 12

1.14 Electromagnetic Compliance for the European Union . . . 13

1.15 FCC verificatio n . . . . . . . . . . . . . . . . . . . . . . 13

2.0 Hardware and interface . . . . . . . . . . . . . . . . . . . . 17

iv Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

2.1 SCSI-3 compatibility . . . . . . . . . . . . . . . . . . . . . 17

2.2 Handling and static-discharge precautions . . . . . . . . . 17

2.3 Electrical interface . . . . . . . . . . . . . . . . . . . . . . 18

2.4 Interface and connector configuration . . . . . . . . . . . . 19

2.5 ST52160N interface connector . . . . . . . . . . . . . . . 20

2.5.1 ST52160N interface pin assignments . . . . . . . . . 21

2.5.2 ST52160WC interface connector . . . . . . . . . . . . 22

2.5.3 ST52160WC interface pin assignments . . . . . . . . 22

2.6 Interface cable requirements . . . . . . . . . . . . . . . . 25

2.6.1 Interface cable length for asynchronous operation . . . 25

2.6.2 Interface cable for Fast SCSI operation . . . . . . . . 25

2.6.3 Interface cable for UltraSCSI operation . . . . . . . . 25

2.7 Options jumper block . . . . . . . . . . . . . . . . . . . . 26

2.7.1 SCSI address . . . . . . . . . . . . . . . . . . . . . . 26

2.8 Active Termination . . . . . . . . . . . . . . . . . . . . . . 29

2.9 Parity enable option . . . . . . . . . . . . . . . . . . . . . 29

2.9.1 Motor Start option . . . . . . . . . . . . . . . . . . . . 29

2.9.2 Remote LED connection . . . . . . . . . . . . . . . . 29

2.10 Daisy chaining . . . . . . . . . . . . . . . . . . . . . . . 29

2.11 Hot-plugging . . . . . . . . . . . . . . . . . . . . . . . . 30

2.12 Mounting the drive . . . . . . . . . . . . . . . . . . . . . 30

3.0 Command set . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.1 Command descriptor block . . . . . . . . . . . . . . . . . 35

3.2 Status byte . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.3 Supported commands . . . . . . . . . . . . . . . . . . . . 36

3.4 Group 0 commands . . . . . . . . . . . . . . . . . . . . . 37

3.4.1 Test Unit Ready command (00

3.4.2 Rezero Unit command (01

3.4.3 Request Sense command (03

3.4.4 Format Unit command (04

3.4.5 Reassign Blocks command (07

) . . . . . . . . . . . . 37

) . . . . . . . . . . . . . . 38

) . . . . . . . . . . . . 38

) . . . . . . . . . . . . . . 39

) . . . . . . . . . . . 43

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A v

3.4.6 Read (6) command (08H) . . . . . . . . . . . . . . . . 45

3.4.7 Write (6) command (0A

3.4.8 Seek (6) command (0B

3.4.9 Inquiry command (12

3.4.10 Mode Select (6) command (15

3.4.11 Reserve (6) command (16

3.4.12 Release (6) command (17

3.4.13 Mode Sense (6) command (1A

3.4.14 Start/Stop Unit command (1B

3.4.15 Receive Diagnostic Results command (1C

) . . . . . . . . . . . . . . . . 46

) . . . . . . . . . . . . . . . . 47

) . . . . . . . . . . . . . . . . . 47

) . . . . . . . . . . . 48

) . . . . . . . . . . . . . 51

) . . . . . . . . . . . . . 52

) . . . . . . . . . . . 53

) . . . . . . . . . . . . 56

) . . . . . 57

3.4.16 Supported Diagnostic Pages . . . . . . . . . . . . . 58

3.4.17 Translate Address Page . . . . . . . . . . . . . . . 59

3.4.18 Send Diagnostic command (1D

) . . . . . . . . . . . 61

3.5 Supported Diagnostics Page—Send Diagnostics . . . . . . 62

3.6 Translate Address Page—Send Diagnostic . . . . . . . . . 62

3.6.1 Read Capacity command (25

3.6.2 Read (10) command (28

3.6.3 Write (10) command (2A

3.6.4 Seek (10) command (2B

3.6.5 Write and Verify command (2E

3.6.6 Verify command (2F

) . . . . . . . . . . . . . . . . . 68

3.6.7 Read Defect Data command (37

3.6.8 Write Data Buffer command (3B

3.6.9 Read Data Buffer command (3C

3.6.10 Read Long command (3E

3.6.11 Write Long command (3F

) . . . . . . . . . . . . 63

) . . . . . . . . . . . . . . . 64

) . . . . . . . . . . . . . . . 65

) . . . . . . . . . . . . . . . 66

) . . . . . . . . . . . . 67

) . . . . . . . . . . . 68

) . . . . . . . . . . . 70

) . . . . . . . . . . . 72

) . . . . . . . . . . . . . . 74

3.7 Group 2 commands . . . . . . . . . . . . . . . . . . . . . 75

3.7.1 Log Select command (4C

3.8 Log Sense command (4D

3.9 Reserve (10) command (56

3.10 Release (10) command (57

) . . . . . . . . . . . . . . 75

) . . . . . . . . . . . . . . . . . 82

) . . . . . . . . . . . . . . . . 83

)

. . . . . . . . . . . . . . .

vi Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

3.11 Group 3 and 4 commands . . . . . . . . . . . . . . . . . 85

3.12 Group 5 and 6 commands . . . . . . . . . . . . . . . . . 85

3.13 Group 7 commands . . . . . . . . . . . . . . . . . . . . 85

Appendix A. Supported messages . . . . . . . . . . . . . . . . 87

A.1 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 87

A.2 Synchronous Data Transfer Request message (01

) . . . . 88

A.2.1 Wide Data Transfer Request Message . . . . . . . . . 89

Appendix B. Sense data . . . . . . . . . . . . . . . . . . . . . . 91

B.1 Additional sense data . . . . . . . . . . . . . . . . . . . . 91

B.2 Sense key . . . . . . . . . . . . . . . . . . . . . . . . . . 93

B.3 Additional sense code and additional sense code qualifier . 94

Appendix C. Mode pages . . . . . . . . . . . . . . . . . . . . . 97

C.1 Read-Write Error Recovery page (01H) . . . . . . . . . . 98

C.2 Disconnect/Reconnect page (02 C.3 Format Device page (03

) . . . . . . . . . . . . . . . . 102

C.4 Rigid Disc Geometry page (04 C.5 Verify error recovery page (07 C.6 Caching page (08

) . . . . . . . . . . . . . . . . . . . . 108

) . . . . . . . . . . . . 100

) . . . . . . . . . . . . . 104

) . . . . . . . . . . . . . 107

C.6.1 Read look-ahead and caching . . . . . . . . . . . . 108

C.6.2 Write caching and write merging . . . . . . . . . . . 109

C.6.3 Caching page description . . . . . . . . . . . . . . 110

C.7 Control Mode page (0A

C.7.1 Unit Attention Parameters (00

) . . . . . . . . . . . . . . . . . 113

) . . . . . . . . . . . 114

Appendix D. Inquiry data . . . . . . . . . . . . . . . . . . . . 117

D.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . 117

D.2 Vital product data pages . . . . . . . . . . . . . . . . . 120

D.2.1 Unit Serial Number page (80 D.2.2 Implemented Operating Definition page (81 D.2.3 Firmware Numbers page (C0 D.2.4 Date Code page (C1

) . . . . . . . . . . . . . . . . 123

D.2.5 Jumper Settings page (C2

) . . . . . . . . . . . . 121

) . . . . 121

) . . . . . . . . . . . 122

) . . . . . . . . . . . . . 123

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A vii

Figures

Figur e 1. Ty p ical startu p current p r o fi l e . . . . . . . . . . . . . . . . 7

Figure 2. Single-ended transmitter and receiver . . . . . . . . . . .18

Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 4. ST52160N jumper settings . . . . . . . . . . . . . . . . 27

Figure 5. ST52160WC jumper settings . . . . . . . . . . . . . . . 28

Figure 6. ST52160N Mounting dimensions . . . . . . . . . . . . . 32

Figure 7. ST52160WC Mounting dimensions . . . . . . . . . . . 33

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 1

Introduction

This manual describes the functional, mechanical and interface specifications for the Medalist hard disc drives. The Medalist Pro 2160N is referred to in this manual by its model number ST52160N. This drive comes with the standard 50-pin interface connector. The Medalist Pro 2160WC is referred to in this manual by its model number ST52160WC. This drive comes with the 80-pin blindmate single-connector attachment (SCA-2).

Seagate desktop products take a step into the future with the ST52160N and ST52160WC. These drives feature MR heads and PRM L r ecording technology.

The Medalist Pro drives uses an UltraSCSI interface. The ST52160N supports a synchronous external transfer rate of up to 20 Mbytes per second. The ST52160WC supports a synchronous external transfer rate of up to 40 Mbytes per second.

These drives have other features that ensure fast data throughput. The ST52160N uses a 128-Kbyte buffer. The ST52160WC uses a 256-Kbyte buffer. The adaptable cache aids the flow of read and write data. Embedded servo technology allows the drives to position the heads for data retrieval efficiently and accurately while eliminating the periodic thermal recalibration that can interrupt during data transfers. These drives also use a 16-bit microprocessor and an intelligent controller that provides data streaming: direct data transfers between the drive and the host without microprocessor intervention. This feature allows for a sustained data rate that facilitates video playback and other multimedia operations.



Pro 2160N and Medalist Pro 2160WC SCSI

The drives conform to the standard 3.5-inch footprint but have a 0.75-inch (19 mm) height profile and a 5.380-inch depth profile. The lower height and shorter depth gives the designer or integrator more room for air circulation, other peripherals or a smaller drive bay.

The SCSI commands the drives support are listed in Section 3.3. on page 36.

2 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

The following is a summary of the drives’ features:

Capacity

• 2.17 Gbytes, guaranteed

Features

• SCSI-3 SPI and SCAM Plug and Play compliant

• 8-bit and 16-bit UltraSCSI

• Transfer rates up to 20 Mbytes and 40 Mbytes per second

• 11-msec average seek time

• 5,379-RPM rotational speed

• 5.56 average latency

• 128-Kbyte

and 256-Kbyte2 buffer

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

• Rotational-position seek/sort

• On-the-fly EC C co rrect i on

• Embedded servo

• PRML channel

• MR heads

Acoustics

• 3.4-bel idle sound power level

• 27-dBA idle sound pressure level

Mini 3.5-inch form-factor

• 19-mm-height profile

• Fits standard 3.5-inch footprint

1. ST52160N

2. ST52160WC

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 3

Specifications summary table

The following table serves as a quick reference for the drives’ performance specifications. These and other specifications are discussed in the Specifications summary section following the table.

Drive specification ST52160N ST52160W C

Guaranteed capacity (Gbytes, 10 Guaranteed sect or s 4,238,282 4,238,282 Bytes per secto r 512 512 Sectors per track (average) 161 161 Physical cylind er s 6,536 6,536 Physical read /wr i t e heads 4 4 Discs 2 2 Recording density (bits per inch, max) 122,369 122,369 Track density (t r acks per inch) 6,731 6,731 Spindle speed (R PM) 5,397 ± 0.5% 5,397 ± 0.5% Internal data-t ra nsfe r ra te

(Mbits per se cond max) External tran sf er rate

(Mbytes per second, max) Cache buffer (Kbytes) 128 256 Height, inches max (mm) 0.748 (19.0) 0.748 (19.0) Width, inches max (mm) 4.01 (101.8) 4.01 (101.8) Depth, inches max (mm) 5.38 (136.6) 5.38 (136.6) Typical weight, l b. (Kg) 1.0 (0.45) 1.0. (0.45) Track-to-t ra ck seek time (msec , typi cal) 3.5 3.5 Average seek tim e (msec, typical) 11.0 11.0 Average seek tim e re ad ( m sec, t ypi cal) 12.0 12.0 Average seek tim e writ e ( m sec, t ypi cal ) 13.0 13. 0 Full-stroke seek tim e (msec, typical) 25.0 25.0 Average laten cy (msec) 5.56 5.56 Power-on to re ady ( sec, typical) 20 20 Spinup curren t: +12V (max) 1.18A 1.18A Seek power (typi cal) 6.4W 6.4W

)2.17 2.17

56.3 to 99.6 MHz 56.3 to 99.6 MHz

10.0 asynchro nus

20.0 synchron ous

20.0 asyn chr onus

40.0 synch r onous

4 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Drive specification ST52160N ST52160W C

Read/Write po w er (typi cal) 6.3W 6.3W Idle power (typical) 6.2W 6.2W Voltage tolerance (including noise) : +5V

Voltage toleran ce ( includ ing no ise): +12V

Ambient tem per at ur e, oper at i ng ( C °) 5° to 55°C 5° to 55°C Temperature gr adient, operati ng

(°C per hour max) 20° C 20°C Relative humidity,operating gradient

(max) 10% per hr. 10% per hr. Relative humidi t y, oper at i ng 8% to 80% 8% to 80% Wet bulb temperature

operating (non condensing) 29.4°C 29.4°C Altitude, opera ting –1,000 to

Shock, norma l op er at in g (Gs max for 11 msec) 2 Gs 2 Gs

Vibration, operating (Gs max at 22–350 Hz without nonrecoverable errors)

Vibration, no noperating (Gs max at 22–350 Hz with no physical damage incurr ed)

Nonrecoverable read errors (bits transfer r ed)

Mean time betw een failures (MTBF) (power-on hou rs )

Contact start -s top cycles 50,00 0 50,000 Service life (years) 5 5

–1,000 to

10,000 ft.

0.75 Gs 0 to Peak

4 Gs 0 to Peak

1 per 10

10,000 ft.

0.75 Gs 0 to Peak

4 Gs 0 to Peak

1 per 1013

500,000 500,000

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 5

1.0 Specifications summary

1.1 Formatted cap acit y

The capacities specified here do not include spare sectors and cylinders. The media contains 2,000 spare blocks at the end of the volume.

Guaranteed capacity (Gbytes Guaranteed sectors 4,238,282

1.2 Physical geometry

Discs 2 Read/write heads 4 Cylinders 6,536 Sectors per track (average) 161

1.3 Functional specifications

)2.17

Interface SCSI-3 SPI Compliant PRML recording method Code (0,4,4)

External data-transfer rate (Mbytes per sec, max)

Internal data-transfer rate

10 asynchronous

synchronous

20 20 asynchronous

40 synchronous

56.3 - 99.6 MHz

(Mbits per sec) Bytes per sector 512 Data zones 19

Areal density (Mbits/ in

) 823.7 Track density (TPI) 6,731 Recording density (BPI, max) 122,369

3. One Gbyte equals 1,000,000,000 b y tes.

4. ST52160N

5. ST52160WC

6 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

1.4 Physical dimensions

Height (max) 0.748 inches (19 mm) Width (max) 4.01 inches (101.8 mm) Depth (max) 5.38 inches (136.6 mm) Weight (max) 1.0 lb. (0.45 Kg)

1.5 Seek time

All seek time measurements are taken under nominal conditions of temperature and voltage with the drive mounted horizontally. In the following table:

•

Track-to-track

seek time is the average of all possible singl e-track

seeks in both directions.

•

Average/typical

seek time is a true statistical random average of at least 5,000 measurements of seeks in both directions between random cylinders, less overhead.

•

Full-stroke

seek time is one-half the time needed to seek from logical

block address zero (LBA 0) to the maximum LBA and back to LBA 0.

Track-to-track seek time typ

Average/typical

seek time

Full-stroke seek time typ

Average latency

3.5 msec typ 11.0 msec typ 25.0 msec typ 5.56 msec

4.5 msec max 12. 0 msec read 27.0 msec max

13.0 msec write

Note.

Host overhead varies between systems and cannot be specified. Drive internal overhead is measured by issuing a no-motion seek. Drive overhead is typically less than 1.0 msec.

____________________

6. All possib le on e- t r ac k seek s a r e d iv ide d i nt o the t i me req ui red t o p erf or m thes e se ek s. Only the mechanism time is used; interface o verhead is excluded.

7. All possible seeks are divided into the time required to perform these seeks. Only the mechan ism time i s used; interface overhead is excluded.

8. The average of 1,000 full-stroke seeks is used in this computation. Only the mechanism time is used; interface overhe ad is excluded.

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 7

1.6 Read lo ok-ahead and caching

The drives use algorithims that improve seek performance by storing data in a buffer and processing it at a more convenient time. Three methods are used: read look-ahead, read c aching and write caching. These are described in Appendix C.6 on page 108.

1.7 Start/stop command

If the motor-start option is disabled, the drive is ready within 20 seconds after power is appli ed. If the motor-start option is enabled, the drive is ready within 20 seconds after it receives the Motor Start command. If the drive receives a command to spin down or power is removed, the drive stops within 15 seconds.

Current (mA)

1,200

1,000

800



600

400

200



2 4



Time (seconds)

Figure 1. Typical startu p cur rent profile

1.7.1 Power-up sequence

The following typical power-up sequence i s provided to assist you in evaluating drive performance. This information does not constitute a specification or a performance guarantee.

Power is applied to the disc drive.

Depending on whether there is a jumper installed on pins 9 and 10 of

the options jumper block (J5) shown in Figure 3 on page 19, either of the following sequences occurs:

• If a jumper is not installed, the remote start option is not enabled, and the drive begins to spin up as soon as power is applied.

• If a jumper is installed, the remote start option is enabled, and the drive begins to spin up when the host sends a command for the motor to start.

8 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Within 250 msec after power is applied, the drive responds to the Test

Unit Ready, Request Sense, Mode Sense and Inquiry commands. The drive begins to lock in speed-control circuits.

The actuator lock releases the actuator.

The spindle motor reaches operating speed in about 5 seconds. After

5 seconds, there are no speed variations. The drive performs velocity-adjustment seeks.

The drive seeks track 0 and is then ready.

1.7.2 Power-down sequence

Caution.

stop.

The power is turned off.

Within 15 seconds, the drive spindle stops rotating.

The read/write heads automatically move to the landing zone, which

is inside the maximum data cylinder.

The magnetic acuator lock mechanism locks the arm. This completes

the power-down sequence.

Do not move the drive until the motor has come to a complete

1.7.3 Auto-park

During power-down, the read/write heads automatically move to the landing zone. The heads park inside the maximum data cylinder and the magnetic actuator lock engages. When power is applied, the heads recalibrate to track 0.

1.8 Power managemen t

The drive supports power-management modes that reduce its overall power consumption. They automatically change from one mode to another in response to interface activity. You do not need to change any parameters or send any special commands to make the drive change modes. The power-management modes are described as follows:

•

Spinup.

coming up to operating speed. The power consumed in t his m ode is equivalent to the average power during the first 10 seconds after the drive begins to spin up.

Spinup is defined as the period dur ing whic h the spindl e is

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 9

•

The servo electronics are active, and the heads are moving to

Seek.

a specific location on the disc. The read/write electronics are powereddown. The power consumed in this mode is equivalent to the average power measured while executing random seeks with a 2-revolution (26.6 msec) dwell between seeks. The drive enters this mode from the Idle mode.

Read/Write.

and the heads are on track.

The motor is up to speed and the drive is in track-follow mode.

Idle.

The drive is reading or writing. All electronics are active

1.8.1 Power consumption

Values in the table below were measured at the dr ive power c onnec tor with an RMS DC ammeter. The terminating resistors are disabled, and terminator power is supplied through the SCSI connector. All values are measured 10 minutes after the drive spins up except as noted.

Spinup Seeking

Current at +12V

Amps peak 1.18 — — — — RMS amps typ — 0.287 0.274 0.274 0.020 Watts typ — 3.444 3.288 3.288 0. 240

Current at +12V

RMS amps typ — 0.596 .0.590 0.581 0.625 Watts typ — 2.980 2.950 2.905 3. 125

Power

Total watts typ — 6.424W 6.238W 6.193W 3.365W

Read/

Write

Idle Standby

1.8.2 Voltage tolerance

Voltage tolerance (including noise)

+5V +12V

± 5% ± 5%

10 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

1.8.3 Input noise

+5V +12V

Voltage tolerance (including noise)

Input noise frequency (max)

Input noise (max, peak-to-peak)

± 5% ± 5%

25 MHz 25 MHz

100 mV 240 mV

1.9 Environmental

This section specifies acceptable environmental conditions for the drives. The operating specifications assume that the drive is powered up. The nonoperating specifications assume that the drive is packaged as it was shipped from the factory.

1.9.1 Ambient temperature (HDA case)

Operating 5°C to 55°C (41°F to 131°F) Nonoperating –40°C to 70°C (–40°F to 158°F)

The system must provide sufficient airflow so that the

Note.

aluminum base surface temperature remains below 55°C.

1.9.2 Temperature gr ad ien t

Operating 20°C per hour (36°F per hour) Nonoperating 30°C per hour (54°F per hour)

1.9.3 Altitude

Operating –1,000 ft. to 10,000 ft. (–305 m to 3,048 m) Nonoperating –1,000 ft. to 40,000 ft. (–305 m to 12,192 m)

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 11

1.9.4 Relative humidity

Operating 8% to 80% noncondensing

Maximum wet bulb 29.4°C (84.9° F ) Operating gradient, max 10% per hour Nonoperating 5% to 95% noncondensing

Maximum wet bulb 35°C (95.0°F)

1.10 Shock and vibration

All shock and vibration specifications assume that the inputs are measured at the drive mounting screws. Shock measurements are based on an 11-msec, half sine wave shock pulse, not to be repeated m or e than twic e per second.

During normal operating shock and vibration, there is no phys ic al damage to the drive or performance degradation.

During abnormal operating shock and vibration, there is no physical damage to the drive, although performance may be degraded during the shock or vibration episode. When normal operating shock levels resume, the drive meets its performance specifications.

During nonoperating shock and vibration, the read/write heads are positioned in the shipping zone.

Normal operating

Shock 2 Gs 10 Gs 75 Gs 5–22 Hz vibration 0.020-i nch

displacement

22–350 Hz vibration 0.50 Gs 0.75 Gs 4.00 Gs

Abnormal operating

0.030-inch displacement

Nonoperating

0.160-inch displacement

12 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

1.11 Acoustics

This table shows the overall A-weighted sound power and sound pressure levels for the drives. All measurements are generally consistent with ISO document 7779. Acoustic measurements are taken under essentially free-field conditions over a reflecting plane. The drive is oriented with the top cover up for all tests.

Overall A-weighted Value

Sound power, typ (bels) 3.4 4.0 Sound power, max (bels) 3.7 4.3

Sound pressure, typ (dBA) 27 30 Sound pressure, max (dBA) 30 33

Idle

Seek

1.12 Reliability

Read error rates are measured with automatic retries and data correction with ECC enabled and all flaws reallocated. The mean time between failures (MTBF) is measured at nominal power at sea level and an ambient temperature of 35°C.

Nonrecoverable read errors 1 per 10 Seek errors 1 per 10 Contact stops and starts 50,000 MTBF 500,000 power-on hours Service life 5 years

bits transferred

physical seeks

1.13 Agency listings

These drives are listed by agencies as follows:

• Recognized in accordance with UL 478 and UL 1950

• Certified to CSA C22.2 No. 220-M1986 and CSA C22.2 No. 950-

M1989

• Certified to VDE 0806/05.90 and EN 60950/1.88 as tested by VDE

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 13

1.14 Electromagnetic Compliance for the European

Union

This model has the CE Marking, signifying that it complies with the European Union requirements of the Electromagnetic Compatibility Directive 89/336/EEC of 03 May 1989 as amended by Directive 92/31/EEC of 28 April 1992 and Directive 93/68/EEC of 22 July 1993.

Seagate above directives. The drive was tested in a representative system for typical applications. T he selected system r epresents the most popular characteristi cs for tes t plat for ms.

The system configurations include:

• 486, Pentium, and PowerPC microprocessors

• 3.5-inch floppy disc drive

• Keyboard

• Monitor/display

Although the test system with this Seagate model complies to the directives, we cannot guarantee that al l systems will comply. The computer manufacturer or system integrator will confirm EMC compliance and provide CE Marking for their product. The drive is not meant for external uses (without properly designed enclosure, shielded I/O cable, etc.), and a terminator should be used on all unused I/O ports.

uses an independent laboratory to confirm compliance to the

1.15 FCC verification

The Medalist Pro SCSI interface drives are intended to be contained solely within a personal computer or s imilar enclosure (not at tached to an external device). As such, a drive is c onsidered to be a subassembly even when individually marketed to the customer. As a subassembly, no Federal Communications Commission authorization, verification or certification of the device is required.

Seagate Technology, Inc. has tested the drive in an enclosure as described above to ensure that the total assembly (enclosure, disc drive, motherboard, power supply, etc.) does comply with the limits for a Class B computing device, pursuant to Subpart J of Part 15 of the FCC rules. Operation with noncertified assemblies is likely to result in interference to radio and television reception.

14 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Radio and television interference.

radio frequency energy and, if not installed and used in strict accordance with the manufacturer’s instructions, may cause interference to radio and television reception.

This equipment is designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television, which c an be determined by turning the equipment on and off, you are encouraged to try one or more of the following corrective measures:

• Reorient the receiving antenna.

• Move the device to one side or the other of the radio or TV.

• Move the device farther away from the radio or TV.

• Plug the equipment into a diff erent outlet so that the receiver and

computer are on different branch outlets.

If necessary, you should consult your dealer or an experienced radio/television technician for additional suggesti ons. You may find helpful the following booklet prepared by the Federal Communications Commission:

This equipment generates and uses

How to Identify and Resolve Radio-Television Interference Problems.

This booklet is available from the Superintendent of Documents, US Government Printing Office, Washington, DC 20402. Refer to publication number 004-000-00345-4.

Note.

This digital apparatus does not exceed the Class B limits for radio noise emissions from computer equipment as set out in the radio interference regulations of the Canadian Department of communications.

Le présent appareil numérique n′émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de Classe B prescrites dans le règlement sur le brouillage radioélectrique édicté par le Ministère des Communications du Canada.

Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 15

Sicherheitsanleitung

Das Gerrät ist ein Einbaugerät, das für eine maximale Umgebung-

stemperatur von 55°C vorgesehen ist. Zur Befestigung des Laufwerks werden 4 Schrauben 6-32 UNC-2A

benötigt. Bei seitlicher Befestigung darf die maximale Länge der Schrauben im Chassis nicht mehr als 5,08 mm und bei Befestigung an der Unterseite nicht mehr als 5,08 mm betragen.

Als Versorgungsspannugen werden benötigt:

+5V æ 5% 0.55A +12V æ 5% 0.35A (1,9A fur ca. 10 Sek. fur ± 10%)

Die Versorgungsspannung muss SELV entsprechen.

Alle Arbeiten an der Festplatte dürf en nur von ausgebildetem Serv-

icepersonal durchgeführt werden. Bitte entfernen Sie nicht die Aufschriftenschilder des Laufwerkes.

Der Einbau des Laufwerkes muss den Anforderungen gemäss DIN

IEC 950 VDE 0805/05.90 entsprechen.

16 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Medalist Pro 2160N/2160WC Product Manual, Rev. A 17

2.0 Hardware and interface

The Medalist Pro drives use an UltraSCSI interface. The ST52160N consists of an 8-bit bidirectional data bus. The ST52160WC consists of a 16-bit bidirectional data bus. The interface supports multiple initiators, disconnect and reconnect, self-configuring host software and logical block addressing.

The UltraSCSI interface uses a singled-ended driver/receiver configuration that uses asynchronous or synchronous communication protocols. The ST52160N supports asynchronous transfer rates up to 10 Mbytes per second and synchronous transfer rates up to 20.0 Mbytes per second. The ST52160WC supports asynchronous transfer rates up to 20 Mbytes per second and synchronous transfer rates up to 40 Mbytes per second.

2.1 SCSI-3 compati bil ity

The drive interface is described in the Seagate SCSI-2 /SCSI-3 Interface Manual, publication number 77738479. The drives comply with the mandatory subset of the ANSI SCSI-2 Interface. The Fast SCSI-3 interface is based on the ANSI Small Computer System Interface-2 (SCSI-2), document number ANSI X3.131-1994.

2.2 Handling and static-discharge precautions

The drive has static-sensitive devices. Avoid damaging the drive and these devices by observing t he following standard handl ing and stati cdischarge precautions:

• Keep the drive in its static-shielded bag until you are ready to complete

the installation. Do not attach any cables to the drive while it is in its static-shielded bag.

• Before handling the drive, put on a grounded wrist strap, or ground

yourself frequently by touching the metal chassis of a computer that is plugged into a grounded outlet. Wear a grounded wrist strap throughout the entire installation procedure.

Wool and synthetic clothes, carpets, plastics and Styrofoam contributes to electrostatic buildup. Static discharge may damage sensitive components in your drive and computer.

• Handle the drive by its edges or frame only.

• The drive is extremely fragile—handle it with care. Do not press down

on the drive’s top cover.

18 Medalist Pro 2160N/2160WC Product Manual, Rev. A

• Always rest the drive on a padded, antistatic surface until you mount it in the host system.

• Do not touch the connector pins or the printed circuit board.

• Do not remove the factory-installed labels from the drive or cover them

with additional labels. If you do, you void the warranty. Some factoryinstalled labels contain information needed to service the drive. Others are used to seal out dirt and contamination.

2.3 Electrical interface

The drives are designed to use single-ended interface signals. They use single-ended drivers and receivers and active terminator circuitry. Figure 2 shows a single-ended transmitter and receiver without the active terminator circuitry.

•

Transmitter characteristics.

The drives use an ANSI SCSI-compatible, open-collector, single-ended driver. This driver is capable of sinking a current of 48 mA with a low-level output voltage of 0.4 volts.

•

Receiver characteristics.

The drives use an ANSI SCSI single-

ended receiver with hysteresis gate or equivalent as a line receiver.

The loss in the cable is defined as the difference between the voltages of the input and output signals, as shown below:

Logic level Driver output (x) Receiver input (x)

Asserted (1) Negated (0)

Line driver

(transmitter or transceiver)

ANSI SCSI

compatible circuit

≤

x ≤ 0.4V 0.0V ≤ x ≤ 0.8V

0.0V

≤

2.5V

x ≤ 5.25V 2.0V ≤ x ≤ 5.25V

+2.85V

110

ohms

Flat cable pair

+2.85V

110

ohms

Line receiver

ANSI SCSI compatible

circuit

Figure 2. Single-ended transmitter and receiver

Medalist Pro 2160N/2160WC Product Manual, Rev. A 19

ST52160WC

Options Jumper Block (J5)

SCA-2 Interface

connector

ST52160N



Options Jumper 



Block (J5)

50-Pin Interface

Standard

power connector

+5V

+12V return +12V 

Circuit board

5V return

connector

Pin 1

Figure 3. Connectors

2.4 Interface and connector configuration

The ST52160N and ST52160WC drives are differentiated by their connectors. The ST52160N comes with a standard 50-pin interface connec tor and a standard 4-pin power connector. The ST52160WC comes with an 80-pin blindmate single-connector attachment (SCA-2) . The power is supplied to the driv e through the bus. To minimize noise, us e shielded mating connectors.

20 Medalist Pro 2160N/2160WC Product Manual, Rev. A

2.5 ST52160N inter fa ce connec to r

The ST52160N uses a standard 50-pin, nonshielded, keyed connector. The connector consists of two rows of 25 male contacts 0.100 inches apart. Pin 1 on the connector is shown in Figure 3 on page 19. Recommended mating connectors and their part numbers are

listed below. Part numbers for mating 3M connectors that are compatible with the

drives are listed below. These connectors do not have a center key and are available with or without strain relief.

Without strain relief No center key

Closed end (for cable ends)

Open end (for daisy chain)

Part numbers for mating Molex connectors compatible with the drives are listed below. These connectors have a center key.

Closed end (for cable ends)

Open end (for daisy chain)

Below are part numbers for strain reliefs that can be used with the M olex connectors.

Molex strain relief, preferred version in Europe

Molex strain relief, preferred version in Japan

3M 3425-7000

3M 3425-6000

Molex 39-51-2504

Molex 39-51-2501

Molex 90170-0050

Molex 15-25-1503

With strain relief No center key

3M 3425-7050

3M 3425-6050

Medalist Pro 2160N/2160WC Product Manual, Rev. A 21

2.5.1 ST52160N interface pin assignments

The table below shows the pin ass ignment for the ST52160N 50-pin interface connector. A minus sign (−) indicates an active-low signal.

Signal name

–DB(0) 2 1 –DB(1) 4 3 –DB(2) 6 5 –DB(3) 8 7 –DB(4) 10 9 –DB(5) 12 11 –DB(6) 14 13

–DB(7) 16 15 –DB(P) 18 17 Ground 19–22 —

Reserved 23–25 —

Terminator power 26 —

Reserved 27–28 —

Ground 29–30 —

–ATN 32 31

Ground 33–34 —

–BSY 36 35 –ACK 38 37 –RST 40 39

–MSG 42 41

–SEL 44 43

–C/D 46 45

–REQ 48 47

–I/O 50 49

Caution.

Do not connect pin 25 to ground. If you plug in the connector upside down, the terminator power on pin 26 is shorted to ground. This may damage the drive.

Signal

pin number

Ground

22 Medalist Pro 2160N/2160WC Product Manual, Rev. A

2.5.2 ST52160WC interface connector

The ST52160WC uses an 80-pin blindmate single-connector attachment (SCA-2). It is a single-piece connector that provides power to the drive through the SCSI bus. The remote LED, motor start options and additional binary codes are also placed on the SCSI bus. Pin 1 on the connector is shown in Figure 3 on page 19.

We recommend the AMP blindmate receptacle assembly (part number 787311-1).

2.5.3 ST52160WC interface pin assignments

The following table shows the pin assignments for the ST52160WC 80-pin interface connector. A minus sign (−) indicates an active-low signal.

Signal Name

(1)

+12V 1 1 2 41 12V GND +12V 2 3 4 42 12V GND +12V 3 5 6 43 12V GND

+12V 4 7 8 44 Mated 1 NC (9) 5 9 10 45 NC (9) NC (9) 6 11 12 46 GND (7) –DB11 7 13 14 47 GND –DB10 8 15 16 48 GND

–DB9 9 17 18 49 GND –DB8 10 19 20 50 GND

–I/O 11 21 22 51 GND

–REQ 12 23 24 52 GND

–C/D 13 25 26 53 GND

–SEL 14 27 28 54 GND

–MSG 15 29 30 55 GND

–RST 16 31 32 56 GND

–ACK 17 33 34 57 GND

–BSY 18 35 36 58 GND

Connector Contact Number (3)

Cable

Conductor

(2)

Connector Contact Number (3)

Signal Name

(1)

Medalist Pro 2160N/2160WC Product Manual, Rev. A 23

Signal Name

(1)

–ATN 19 37 38 59 GND –DBP 20 39 40 60 GND –DB7 21 41 42 61 GND –DB6 22 43 44 62 GND –DB5 23 45 46 63 GND –DB4 24 47 48 64 GND –DB3 25 49 50 65 GND –DB2 26 51 52 66 GND –DB1 27 53 54 67 GND –DB0 28 55 56 68 GND –DP1 29 57 58 69 GND

–DB15 30 59 60 70 GND –DB14 31 61 62 71 GND –DB13 32 63 64 72 GND –DB12 33 65 66 73 GND

+5 V 34 67 68 74 Mated 2 +5 V 35 69 70 75 5V GND +5 V 36 71 72 76 5V GND

NC (9) 37 73 74 77

RMT-START

(6) (8)

SCSI ID 0

(6) (8)

SCSI ID 2

(5) (8)

Connector Contact Number (3)

38 75 76 78

39 77 78 79

40 79 80 80

Cable

Conductor

(2)

Connector Contact Number (3)

Signal Name

(1)

Active LED

out (4) (8)

DLYD-Start

(9)

SCSI ID 1

(6) (8)

SCSI ID 3

(6) (8)

24 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Notes:

See Section 2.3 on page 18 for detailed electrical charac-

teristics of these signals. The conductor number refers to the conductor position when

using 0.025-inch (0.635 mm) centerline flat-ribbon cables. You can use other cable types to implement equivalent contact assignments.

Connector contacts are on 0.050 inch (1.27 mm) centers.

Front-panel LED signal: indicates drive activity for the front-

panel hard drive activity indicator. Asserted by the host to enable the Motor Start option (Motor

Start enables the motor through the SCSI bus command). To set up the SCSI bus ID on the drive, the host asserts the

binary code on A3, A2, A1 and A0. GND provides a means for differential devices to detect the

presence of a single-ended device on the bus.

. Refer to notes 4 through 7 instead of installing jumpers

and cables on the options jumper block (J5). NC means no connection.

The conductor number refers to the conductor position when

10.

using 0.050 inch (1.27 mm) centerline flat ribbon cables. You can use other cable types to implement equivalent assignments.

Connector contacts are on 0.100 inch (2.54 mm) centers.

11.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 25

2.6 Interface cable req ui re ment s

A characteristic impedance of 100 ohms + 10% is recommended for the unshielded flat or twisted-pair interface cable. However, most available cables have a somewhat lower characteristic impedance. To minimize discontinuities and signal reflections, do not use cables of different impedances on the same bus. If shielded and unshielded cables are mixed within the same bus, the effect of impedance mismatch must be carefully considered. This is especially important f or maintaining adequate margins for Ul traSCSI transfer rates. UltraSCSI i mplementation may require adjustments to cable length, the number of loads and the transfer rates to achieve satisfactory system operation.

Part Manufacturer

Flat Cable 3M-3365-50 Twisted Pair Spectra Twist-N-Flat 455-248-50

2.6.1 Interface cable length for asynchronous operation

The SCSI interface cable must meet the following requirements for normal operation:

• The cable length cannot be longer than 6.0 meters.

• Cable stubs cannot be more than 0.1 meter long and must be

separated by at least 0.3 meter.

2.6.2 Interface cable fo r Fast SCSI operation

When using Fast SCSI synchronous data-transfer rates, the SCSI interface cable must meet the following additional requirements:

• The cable length cannot be longer than 3.0 meters.

• The cable should not attenuate a 5-MHz signal more than 0.095 dB

per meter.

• The DC resistance at 20°C must not exceed 0.230 ohms per meter.

• A shielded, twisted-pair cable should not have a propagation delay

delta greater than 20 nsec per meter.

2.6.3 Interface cable for UltraSCSI operation

• The cable cannot be longer than 3.0 meters when using up to 4

devices.

26 Medalist Pro 2160N/2160WC Product Manual, Rev. A

• The maximum cable length when using 5 to 8 devices cannot be longer than 1.5 meters.

• Cable stubs cannot be more than 0.1 meter long and must be separated by at least 0.3 meter.

2.7 Options jumper block

The ST52160N and ST52160WC options jumper block allows you to:

• Set the SCSI ID address.

• Enable or disable active termination.

• Enable parity.

• Activate the motor start/stop option.

• Attach a remote LED.

These functions are represented on the drives’ options jumper block (J5). Figure 4 and Figure 5 on pages 27 and 28 show you how to configure the jumpers. The ST52160WC allows you t o configure some of these functions through the SCSI bus. You must use either the bus commands or the jumpers to configure the drive when both options are available.

The options jumper block accepts 2-mm jumpers. If you need additional jumpers, use the jumpers listed below or equivalent.

Manufacturer Part number

Seagate 13211-001 Du Pont 89133-001 Methode 8618-202-70

2.7.1 SCSI address

The SCSI ID address is set using pins 1 and 2, 3 and 4, and 5 and 6 on the options jumper block (J5). The drive is shipped with no jumpers on the SCSI addresses. This makes the def ault SCSI ID 0. T o configure the drive for a different address, consult the charts in Figure 4 or Figure 5 on pages 27 and 28. Refer t o your host adapter manual f or the preferred addressing scheme.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 27

ST52160N Options jumper block (J5)

234 1

6 5

1213148



SCSI ID 0

Drive oriented with circuit board side down

SCSI ID 1

SCSI ID 2 SCSI ID 3

SCSI ID 4

SCSI ID 5 SCSI ID 6

SCSI ID 7



SCSI Parity  Disabled

SCSI Parity Enabled Remote Start  Disabled

Remote Start Enabled

SCSI Terminator Enabled

SCSI Terminator Disabled

Remote LED Connection

Note.

Pins 13 and 14 are used for a remote LED connection. Pin 13 is for cathode and  Pin 14 is for anode.

Figure 4. ST521 60N j u m per settings

28 Medalist Pro 2160N/2160WC Product Manual, Rev. A

ST52160WC Options jumper block (J5)

234 1

1213148



Drive oriented with circuit board side down

SCSI ID 0

SCSI ID 1

SCSI ID 2 SCSI ID 3 SCSI ID 4

SCSI ID 5 SCSI ID 6 SCSI ID 7 SCSI ID 8

SCSI ID 9 SCSI ID 10

SCSI ID 11

SCSI ID 12

SCSI ID 13 SCSI ID 14 SCSI ID 15



SCSI Parity  Disabled

SCSI Parity

Enabled Remote Start  Disabled Remote Start Enabled

Remote LED Connection

Figure 5. ST521 60W C ju mper settings

Note.

Pins 13 and 14 are used for a remote LED connection. Pin 13 is for cathode and  Pin 14 is for anode.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 29

2.8 Active Termin ation

Active termination is configured on the ST52160N using pins 11 and 12 on the J5 options jumper block. Active termination is enabled when there is no jumper on pins 11 and 12. Active termination is disabled when a jumper is placed on pins 11 and 12. The drive provides termination power to the drive’s terminator chips and to the SCSI bus. No other option is available.

Termination is not provided on the ST52160WC. You mus t provide your own external termination as required.

2.9 Parity enable option

Parity is enabled on the ST52160N when a jumper is installed on pins 7 and 8 of the options jumper block (J5). Parity is enabled on the ST52160WC when a jumper is installed on pins 9 and 10 of t he options jumper block (J5). Both drives are shipped with parity enabled.

2.9.1 Motor Start option

The Motor Start option causes t he drive to wait for a Start/Stop Unit command from the host before starting or stopping the spindle motor. Motor Start is enabled on the ST52160N when a jumper is installed on pins 9 and 10 of the options jumper block (J5). Motor Start is enabled on the ST52160WC when a jumper is installed on pins 11 and 12 of the options jumper block (J5).

2.9.2 Remote LED connection

Pins 13 and 14, located on the options jumper block, are reserved for a remote LED. Pin 13 is ground. The options jumper block accepts 2-mm connectors. You may need to replace the current LED cable-connector with a 2-mm connector. If you are placing the drive in an array configuration, we recommend the LiteOn (part number LTL-3231A) LED or equivalent.

2.10 Daisy chaining

You can connect the ST52160N in a daisy-chain configuration with a maximum of eight SCSI devices (host included) that have single-ended drivers and receivers. Each SCSI device must be set to a unique SCS I ID number. SCSI ID 7 is usually used by the host adapter.

30 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Devices at both ends of the SCSI bus must be terminated; intermediate devices should not be terminated. All electrical signals are common between all SCSI devices.

2.11 Hot-plugging

Hot-plugging allows you t o connect and disconnect the I/O and power cables for each SCSI device in a daisy chain without powering down the system. When hot-plugging, the following conditions must be met:

• All I/O transactions are complete before you install or remove a drive.

• The terminators at either end of the SCSI bus are in place.

• The drive you are disconnecting or connecting is not the device that

supplies terminator power or terminator resistance to the bus.

To avoid damage to the head/disc assembly, the spindle motor must be completely stopped and the heads must be parked before before you remove the drive from the system. You can stop the spindle and park the heads as follows:

• If the drive is not configured to use the remote start/stop feature, disconnect the DC power cable from the drive DC power connector and wait 30 seconds.

• If the drive is configured to use the remote start/stop feature, issue the Start/Stop Unit command and wait 30 seconds.

2.12 Mounting the drive

The drives fit the standard 3.5-inch form-factor but have a 0.75-inch height profile and a 5.38-inch depth profile. You can mount them securely in the computer using either the bottom or side mounting holes, as described below. Position the drive so that you do not strain or crimp the cables. Refer to Figure 6 and Figure 7 on pages 32 and 33 for the mounting dimensions

Bottom mo untin g hole s.

four available bottom mounting holes. Do not insert the screws more than

0.20 inches (6 turns) into the drive frame.

Side mounti ng ho les.

the six available side mounting holes. Use two mounting holes on each side of the drive. Do not insert the screws more than 0.20 inches (6 turns) into the drive frame.

Insert 6-32 UNC-2A mounting screws in the

Insert 6-32 UNC-2A mounting screws in four of

Medalist Pro 2160N/2160WC Product Manual, Rev. A 31

Caution.

• Use only mounting screws of the type specified.

• Gently tighten the mounting screws—do not apply more than 6 inch-lb

To avoid damaging the drive:

of torque.

32 Medalist Pro 2160N/2160WC Product Manual, Rev. A

In the following figures, all dimensions are in inche s and millimeters (mm).

Six 6-32 NC-2B threaded hole Max screw insertion depth: 0.20 inches

0.748 max (19.000)

2.362 ± 0.010

(59.995. ± 0.254)

0.240 ± 0.020 (6.096

4.000 ± 0.010 (101.60

1.985 ± 0.020

(50.419 ± 0.508)

Four 6-32 NC-2B threaded hole

Max screw insertion depth: 0.20 inches

± 0.508)

± 0.254)

5.380 max (136.165)

1.750 ± 0.010

(44.450 ± 0.254)

0.250 ± 0.010 

(6.350 ± 0.254)

1.120 (28.448)

1.625 ± 0.020

(41.275 ± 0.508)

4.010 max (101.854)

3.750 ± 0.010 (95.250 ± 0.254)

1.145 (29.083)

0.175 (4.445)

0.188

0.238

(6.045)

(4.775)

Figure 6. ST52160N M ounting dimensions

Pin 1Pin 1

Medalist Pro 2160N/2160WC Product Manual, Rev. A 33

Six 6-32 NC-2B threaded hole Max screw insertion depth: 0.20 inches

0.748 max (19.000)

2.362 ± 0.010

(59.995. ± 0.254)

0.240 ± 0.020 (6.096

4.000 ± 0.010 (101.60

5.380 max (136.165)

1.985 ± 0.020

(50.419 ± 0.508)

Four 6-32 NC-2B threaded hole

Max screw insertion depth: 0.20 inches

0.181

(4.597)

± 0.508)

± 0.254)

1.750 ± 0.010

(44.450 ± 0.254)

0.250 ± 0.010 

(6.350 ± 0.254)

1.120 (28.448)

1.625 ± 0.020

(41.275 ± 0.508)

4.010 max (101.854)

3.750 ± 0.010 (95.250 ± 0.254)

1.875 (47.625)

Figure 7. ST52160WC Mount in g di me nsi ons

34 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Medalist Pro 2160N/2160WC Product Manual, Rev. A 35

3.0 Command set

The drives support a subset of the Group 0, Group 1 and Group 2 standard SCSI commands. T he commands are described in this section.

3.1 Command descriptor block

The initiator makes a request to the drive by sending a command descriptor block (CDB) to the drive. Each CDB has the following common characteristi cs:

• Byte 0 always contains the operation code.

• The three most significant bits (bits 7–5) of byte 1 contain the logical

unit number (LUN). This field is ignored if an Identify Message is sent.

• The last byte is always zero.

3.2 Status byte

The drive terminates each command by sending the status byte (shown below) to the initiator during the status phase before the command complete message.

Bytes

76543210

Reserved

00 0

status byte

Good status. Check condition status.

tion or an abnormal condition. In response, the initiator may issue a Request Sense command to determine the nature of the condition.

Busy status.

from an initiator. The initiator retries the command later. The drive returns a busy status if 1) the initiator has not sent the disconnect message and tries to queue a command or 2) the initiator rejects the disconnect message and the queue is not empty.

can be any of the following:

The drive has s uccessfully completed a com mand.

The drive is busy and is unable to accept a command

The

Bits

Status byte code

The drive detected an error, an excep-

Rsvd

36 Medalist Pro 2160N/2160WC Product Manual, Rev. A

18HReservation conflict status.

A SCSI device tried t o access the drive, but was unable to because the drive was already reserved by another SCSI device.

Queue full status.

The drive received a command but rejected it because the queue was full. The drive only uses this status if tagged command queuing is implemented.

3.3 Supported commands

The drive supports the commands listed below.

Group 0 commands Operation code

Test Unit Ready 00 Rezero Unit 01 Request Sense 03 Format Unit 04 Reassign Blocks 07 Read (6) 08 Write (6) 0A Seek (6) 0B Inquiry 12 Mode Select (6) 15 Reserve (6) 16 Release (6) 17 Mode Sense (6) 1A Start/Stop Unit 1B Receive Diagnostic Results 1C Send Diagnostic 1D

H H H H H H

H H H H H

Group 1 commands Operation code

Read Capacity 25 Read (10) 28 Write (10) 2A Seek (10) 2B Write and Verify 2E

H H

Medalist Pro 2160N/2160WC Product Manual, Rev. A 37

Group 1 commands Operation code

Verify 2F Read Defect Data 37 Write Data Buffer 3B Read Data Buffer 3C Read Long 3E Write Long 3F

H H H

Group 2 commands

Log Select 4C Log Sense 4D Reserve (10) 56 Release (10) 57

H H

3.4 Group 0 commands

3.4.1 Test Unit Ready command (00H)

The Test Unit Ready command verifies that the drive is ready; it is not a request for a self-test. If the drive can accept an appropriate media access command without encountering an error, it returns a good status.

Bits

Bytes

76543210

000000000 1 LUN 00000 200000000 300000000 400000000 500000000

38 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.4.2 Rezero Unit command (01H)

The Rezero Unit command retracts the read/write heads to the cylinder containing logical block zero.

Bytes

76543210

000000001 1 LUN 00000 200000000 300000000 400000000 500000000

Bits

3.4.3 Request Sense comm an d (03H)

The Request Sense command requests the dr ive to t ransfer sense dat a to the initiator in the additional sense data format. The additional sense format is described in Appendix B on page 91.

The sense data applies to the previous command on which a check condition status was returned. This sense data is saved for the initiator until:

• The initiator requests the sense data using the Request Sense command, or

• Another command is received from the initiator that issued the original command that caused the check condition status.

If any of the following fatal errors occur during a Request Sense command, the drive sends a check condition status, and t he sense data m ay be invalid.

• The drive receives a nonzero reserved bit in the CDB.

• An unrecovered parity error occurs on the data bus.

• A malfunction prevents return of sense data.

If any other error occurs during the Request Sense command, the drive returns sense data with a good status.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 39

Bytes

000000011 1 LUN 00000 200000000 300000000 4 Allocation length 500000000

Byte 4

76543210

allocation length

The the initiator has allocated for returned sense data. The drive returns the number of bytes specified by the allocation length up to 22 bytes. If the allocation length is set to zero, no sense data is returned.

This is not an error.

specifies the maximum number of bytes

Bits

3.4.4 Format Unit command (04H)

The Format Unit command assures that the medium is formatted so that all of the addressable data blocks can be accessed. In addition, the medium can be certified and control structures may be created for the management of the medium and defects.

If the specified logical unit is reserved, the Format Unit command is rejected with a reservation conflict status. Extent reservations are not supported. See Section 3.4.11 on page 51 for more information about reservations.

The initiator can specify (or not specify) sectors to be reallocated during the formatting process.

Bytes

0 00000100 1 LUN 2 00000000

3–4 Interleave

5 00000000

Byte 1

76543210

format data

The bit,

and the

tion 3.4.4.2. on page 40.

(Fmt Data) bit, the

Defect list format

Bits

Fmt

Data

Cmp

lst

Defect list format

complete list

field are described in S ec-

(Cmp lst)

40 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes 3–4

interleave

The value. However, the drive always formats the disc with an interleave of 1:1.

field is not supported. It can contain any

3.4.4.1 Defect lists

When the Format Unit command is issued, media defect information can be gathered from several sources. Four of these sources—primary defect list, certification defect list, data defect list and grown defect list—are defect lists written to the drive. They are defined below. As signments in Byte 1 of the defect list header—described in Section 3.4.4.3 on page 42, determine the use of the defect list during formatting. The Reassign Blocks and Read Defect Data commands also use these lists.

• The

primary defect list (PList)

the drive is manufactured and written to the disc in an area that is not directly accessible by the user. These defects are considered permanent and cannot be changed.

certification defect list (CList)

sectors that the drive reads during the certify of the Format Unit command. The CList is incorporated into the GList before the end of the Format Unit command.

data defect list (DList)

the drive during a data-out phase of the c urrent Format Unit command. The drive sends the DList in the last bytes of the data-out phase (described in Section 3.4.4.3) and may add it to the GList.

grown defect list (GList)

or detected by the target but does not include defects from the PList. The GList includes defects detected by the format operation during media certification, the DList, defects previously identified with a Reassign Blocks command and defects previously detected by the target and automatically reallocated.

is a list of media defects found when

is a temporary list of unrecoverable

is a list of sectors the initiator supplies to

is a list of defects supplied by the initiator

3.4.4.2 Format Unit parameters

For each format listed in the following table, except the default format, the initiator sends a defect list header. This header is described in Sec tion

3.4.4.3. The physical sector format is described in Section 3.4.4.4. on

page 43. The block format and bytes-from-index format are not supported.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 41

Byte 1 of CDB

Bit 4 Bit 3 Bit 2–Bit 0

Fmt

Cmp

Data

00XXX

01XXX

100XX

1 0 100

1 0 101

1011X

110XX

1 1 100

1 1 101

1111X

Lst

Defect List

Format

Description

Default format

send the defect list header or DList to the drive. The drive reallocates all sectors in the PList and GList.

Format option with the PList only

initiator does not send the defect list header or DList to the drive. The drive reallocates all sectors in the PList and erases the GList.

Extended format.

defect list header but no DList. All sectors in the PList and GList are reallocated.

The drive does not support bytes-from-index format.

. The initiator does not

. The

The initiator sends a

Format option with the GList and DList.

The initiator sends the defect list header, which may be followed by a DList in physical sector format. The drive adds the DList to the existing GList. All sectors in the PList and GList are reallocated.

Reserved Format option without GList or DList

The drive erases any previous GList. The initiator sends a defect list header but no DList. All sectors in the PList are reallocated.

The drive does not support bytes-from-index format.

Format option with DList only.

erases any previous GList. The initiator sends the defect list header, which may be followed by a DList in physical sector format. The DList becomes the new GList. All sectors in the PList and GList are reallocated.

The drive

Reserved

42 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.4.4.3 Defect list header and defect list

The defect list, shown below, contains a 4-byte header, followed by one or more defect descriptors. Byte 1 of the defect list header determines whether the P and C defects are reallocated.

Bytes

000000000

1 FOV DPRY DCRT STPF 0 0 0 0 2–3 Defect list length 4–

Byte 1

Bytes 2–3

76543210

FOV

If the interpreted. If the FOV bit is 0, the DPRY, DCRT and STPF bits must be zeros.

If the DPRY bit is 0, the defects described in t he P List are reallocated during formatting. The drive sends a check condition status if it cannot find the PList. If DPRY is 1, the PList is maintained but the sectors are not reallocated.

If the

DCRT

during the format. Therefore, no CList for this format is created or reallocated. If the DCRT is 0, the drive verifies the data written during the format, creates a CList and reallocates sectors that were unrecoverable.

If the

STPF

an error while accessing either the P or G defect list. If the

STPF

bit is 0, the drive continues formatting even though it has encountered an error while accessing either the P or G defect list.

The

defect list length

that follows the header. For each sector to be reallocated, the defect list contains one defect descriptor that contains 8 bytes in either the bytes-from-index format or the physical sector format. A length of zero indicates that no DList follows; this is not an error.

Defect descriptor

bit is 1, the DPRY, DCRT and STPF bits are

bit is 1, the drive does not verify the data written

bit is 1, the drive stops formatting if it encounters

Bits

is the length, in bytes, of the defect list

Bytes 4–

The defect descriptors are described in Sections 3.4.4.4. on page 43. A length of zero indicates that no DList follows;

this is not an error.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 43

3.4.4.4 Defect descriptor—physical sector format

Defects are specified in the physic al sector format when t he defect l ist format field is 101 tion 3.4.4. on page 39.

Each defect descriptor for the physical sector format specifies a sectorsize defect location that is composed of the cylinder number of the defect, the head number of the defect and the defect sector number. The defect descriptors must be in ascending order.

See Byte 1 of the Format Unit command in Sec-

A defect sector number of FFFFFFFF

(which means reassign the entire

track) is illegal. The information in the following table is for each defect.

Bytes

76543210

Bits

0–2 Cylinder number of defect

3 Head number of defect

4–7 Defec t sector number

3.4.5 Reassign Blocks command (07H)

When the drive receives the Reassign Blocks command, it reassigns defective logical blocks to available spare sectors.

Note.

After sending the Reassign Blocks command, the initiator transfers a defect list containing the logic al block addresses to be reassigned. The drive reassigns the logical blocks. The data contained in the logical blocks may not be preserved.

The drive can repeatedly assign a logical block to multiple physical addresses until there are no more spare locations available on the disc.

ARRE and AWRE may perform automatic reassignments independently of this command.

If the drive does not have enough spare sectors to reassign all of the defective logical blocks, the command terminates with a check condition status, and the sense key is set to media error. The logical block address of the first logical block not reassigned is returned in the information bytes of the sense data.

44 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes

76543210

000000111 1 LUN 00000 200000000 300000000 400000000 500000000

Bits

3.4.5.1 Reassign Blocks defect list

The Reassign Blocks defect list contains a 4-byte header followed by one or more defect descriptors. The length of each defect descriptor is 4 bytes.

Bytes

0 00000000 1 00000000

2–3 Defect list length

4–

76543210

Defect descriptors

Bits

Byte 2–3

Bytes 4–

defect list length

The the defect descriptors that follow. The defect list length is equal to four times the number of defects.

The

defect descriptor

address of the defect. The defect descriptors must be in ascending order.

specifies the total length, in bytes, of

contains the 4-byte logical block

Medalist Pro 2160N/2160WC Product Manual, Rev. A 45

3.4.6 Read (6) command (08H)

When the drive receives the Read command, it transfers data t o the initiator.

The Read-Write Error Recovery page (01 handles errors during a Read command. The Read-Write Error Recovery page is discussed in Appendix C.1 on page 98.

If there is a reservation access conflict, this command terminates with a reservation conflict status and no data is read. For more information about the reservation conflict status, see Section 3.2. on page 35.

In systems that support disconnection, the drive disconnects when a valid Read command is received, unless the data is available in the cache buffer. The buffer-full ratio byte of the Disconnect/Reconnect page determines when the drive reconnects. (The Disconnect/Reconnect page is discussed in Section C.2. on page 100). The drive may disconnect, if allowed, whenever there is less than one block in the buffer.

Because the drive uses read look-ahead functions, it may read more data into the buffer than specified by the transfer length in the CDB.

Note.

Bytes

The Read (6) command cannot access all logical blocks on the drive. The Read (10) command must be used to access all logical blocks.

76543210

000001000 1 LUN Logical block address (MSB) 2 Logical block address 3 Logical block address (LSB) 4 Transfer length 500000000

) determines how the drive

Bits

Bytes 1–3

Byte 4

logical block address

The the read begins.

transfer length

The logical blocks of data to be transferred. A transfer length of 0 indicates that 256 logical blocks will be transferred. A ny other value indicates the number of logical blocks transferred.

specifies the logical block where

specifies the number of contiguous

46 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.4.7 Write (6) command (0AH)

When the drive receives the Write command, it wr ites the initiator’s data to the disc.

The Read-Write Error Recovery page (01 handles bad sectors during a Write command. The Read-Write Error Recovery page is discussed in Appendix C.1 on page 98. If the system supports disconnection, the drive can dis connect and reconnect while executing this command. The drive disconnects when either an internal error-recovery procedure is required or the drive’s internal data buffer is full. The buffer-empty ratio in the Disconnect/Reconnect page determines when the drive reconnects. Section C.2 on page 100 documents the Disconnect/Reconnect page.

If there is a reservation access conflict, this command terminates with a reservation conflict status and no data is written. For more information about the reservation conflict status, see Section 3.2. on page 35.

Note.

Bytes

The Write (6) command cannot access all logical blocks on the drive. The Write (10) command must be used to access all logical blocks.

76543210

000001010 1 LUN Logical block address (MSB) 2 Logical block address

) determines how the drive

Bits

3 Logical block address (LSB) 4 Transfer Length 500000000

Bytes 1–3

Byte 4

The blocks of data to be transferred. A transfer length of zero indicates that 256 logical blocks are to be transferred. Any other value indicates the number of logical blocks to be transferred.

logical block address

The the write operation begins.

transfer length

specifies the number of contiguous logical

specifies the logical block where

Medalist Pro 2160N/2160WC Product Manual, Rev. A 47

3.4.8 Seek (6) command (0BH)

When the drive receives the Seek command, it seeks to the track of the specified logical block address. This command is not necessary because all commands that access the disc contain implied seeks. In systems that support disconnection, the drive disconnects when it receives a valid Seek command.

The Seek (6) command cannot access all logical blocks on the

Note.

drive. The Seek (10) command must be used to access all logical blocks.

Bytes

000001011 1 LUN Logical block address (MSB) 2 Logical block address 3 Logical block address (LSB) 400000000 500000000

Bytes 1–3

76543210

logical block address

The which the head seeks.

Bits

specifies the logical block to

3.4.9 Inquiry comma nd (12H)

When the drive receives the Inquiry command, it sends the inquiry data to the initiator. When the requested inquiry data cannot be returned, a check condition status is reported.

If an Inquiry command is received from an initiator with a pending unit-attention condition (before the drive reports a check condition status), the drive performs the Inquiry command and the Unit Attention condition is not cleared.

The initiator should allocate 36 returned to the initiator is summarized in Appendix D on page 117.

bytes for inquiry data. The inquiry data

48 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes

000010010 1 LUN Reserved EVPD

2 300000000

4 Allocation length, in bytes 500000000

Byte 1

Byte 2

Byte 4

76543210

00000000

enable vital product data (EVPD

If the returns the standard inquiry data. If the EVPD bit is one, the drive returns the optional vital product data specified in byte 2.

page code

The information the drive returns. If EVPD is zero, this field must be zero.

The

allocation length

has allocated for returned inquiry data. The drive returns the number of bytes specified by the allocation length up to a maximum of 148 bytes. If the allocation length is zero, no data is returned. at least 36 inquiry data.

field specifies which page of the vital product

specifies the number of bytes the initiator

This is not an error.

to allow the initiator to receive all of the standard

Bits

Page code

) bit is zero, the drive

The allocation length should be

3.4.10 Mode Select (6) command (15H)

The Mode Select command allows the initiator to change parameters stored in the mode pages. The mode pages are described in Appendix C.on page 97. The drive stores four copies of each mode page:

• Current values copy.

drive uses to control its operation. After a power-on reset, hard reset or bus device reset, the current values are equal to the saved values if the saved values can be retrieved, or the default values if the saved values cannot be retrieved.

• Changeable values copy.

parameters. Instead, it contains a map of each mode page, indicating which parameters are changeable by the initiator. If a bit contains a 1, the corresponding value in the mode page is changeable. If a bit contains a 0, the corresponding value in the mode page is not changeable. The changeability values for each bit of each mode page and the default values are listed in Appendix C.

This copy contains the parameter values the

This copy does not actually contain any

Medalist Pro 2160N/2160WC Product Manual, Rev. A 49

• Default values copy.

drive used as its current values when it was manufactured. The drive defaults to these values after a reset condition, unless valid saved values are available. The default values are li sted in Appendix C on page 97.

• Saved values copy.

If the parameter is changeable, these values can be set using a Mode Select command. If the parameter is not changeable, the default values are always used.

The drive has one set of mode parameters for all of the initiators on the SCSI bus. If the initiator that issued the Mode Select command changes a parameter that applies to other initiators, the drive generates a sense key of Unit Attention wit h an additional sense key of mode parameters changed (2AH/01) for all the other initiators. The sense keys and additional sense codes are discussed in Appendix B on page 91.

Before sending the Mode Select command, the initiator should send a Mode Sense command requesting that the drive return the c hangeable values for all pages. The initiator uses this information to determine which pages are supported, the proper length for those pages and which parameters in those pages can be changed for that logical unit. Also, before sending each Mode Select command, the initiator should send a Mode Sense command to request the current values.

When the drive receives the Mode Select command, it updates the savable parameters with the current values included in the Mode Select command. After the drive saves the parameters, it reports a good status. The drive verifies all Mode Select data.

This copy contains the parameter values the

The saved values are the values the drive stores.

If the drive detects invalid parameter data during the Mode Select command, it sends a sense key of code of

Bytes

invalid field in parameter list

76543210

000010101 1 LUN P F = 1 0 0 0 SP 200000000 300000000 4 Parameter list length 500000000

illegal request

, and no parameters are changed.

Bits

with an additional sense

50 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Byte 1

page format (PF)

The

bit is always one. This means that the data sent by the initiator after the mode select header and block descriptors complies with the page format.

When the

save pages (SP)

bit is 1, the drive saves the savable

pages in nonvolatile memory. When the

save pages (SP)

bit is 0, the drive saves the current pages in RAM only, which means that the parameters are lost when the drive is powered down.

Byte 4

parameter list length

The

specifies the length, in bytes, of the header and mode page tran sferred t o the drive . A parameter list length of 0 means that no dat a is transferred. To calculate the parameter list length for any given mode page, add the parameter list header (4 bytes), the block descriptor (if any, 8 bytes), the 2-byte mode page header an d the length of each mode pa ge. For the length of the mode pages refer to Appendix C on page 97.

3.4.10.1 Mode Select parameter list

The Mode Select parameter list contains a 4-byte header, followed by a 1-block descriptor (if any), followed by the Mode Select parameter pages.

Each block descriptor specifies the media characteristics for all or part of a logical unit. The rest of the Mode Select parameters are grouped by function and organized into mode pages. The mode pages are described in Appendix C on page 97.

Bytes

76543210

Bits

Parameter list header

0 (default) Reserved (00

1 (default) M edium type (00 2 (default) Reserved (00

3 (default) Block descriptor length (00

(Optional) Block descriptor data

4 (default) Density code (00

5–7 Number of blocks

8 (default) Reserved (00

9–11 Block length

Parameter information

12–

Mode pages

)

or 08H)

Medalist Pro 2160N/2160WC Product Manual, Rev. A 51

Byte 1

Byte 3

Byte 4 Bytes 5–7

Bytes 9–11 Note.

Bytes 4–11 will be provided if the initiator requests the Block

Descriptor.

medium type

The drive is a direct-access device.

block descriptor length

If the is sent to the drive. If the no block descriptor is sent to the drive.

density code

The

number of blocks

The which is listed in the formatted capacity section of the appropriate product manual.

block length

The

field is always 00H, which means that the

is 8 bytes, a block descriptor

block descriptor length

is always 00H and cannot be changed.

is equal to the guaranteed sectors,

is always 0200H and cannot be changed.

is 0 bytes,

3.4.11 Reserve (6) command (16H)

When the initiator issues a Reserve command, it requests that the drive be reserved for exclusive use by the initiator until the reservation is:

• Superseded by another Reserve command from the initiator that made the reservation. An initiator that has already reserved the drive can modify that reservation by issuing another Reserve command. When the drive receives the superseding Reserve command, the previous reservation is canceled.

• Released by a Release command from the same initiator. See the Release command in Section 3.4.12 on page 52.

• Released by a bus device reset message from any initiator.

• Released by a hard reset.

After the drive honors the reservation from one initiator, it accepts Inquiry, Request Sense and Reserve and Release commands from other initiators; the drive rejects all other commands with a reservation conflict status.

Note.

For the ST52160WC, the Release (6) command cannot release SCSI ID’s 8–15. Use the Release (10) command.

52 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes

000010110 1 LUN 3r d pty 3rd party device ID Extent 200000000 300000000 400000000 500000000

Byte 1

76543210

3rd pty

If the the 3rd pty bit i s 1, the initiator reserves the drive for another initiator. The SCSI ID of the third-party initiator is specified in the

3rd party device ID

The

extent

extent reservations. If the ex tent bit is 1, the driv e generates a check condition status.

bit is 0, the initiator res erves the drive for itself. I f

field.

bit must always be 0. The drive does not support

Bits

3.4.12 Release (6) command (17H)

When an initiator that had reserved the drive using the Reserve command issues the Release command, it cancels t he reservation. If the drive is not currently reserved or i s reserved by another initiator and it receives a Release command, the drive returns a good status and maintains the reservation.

Note.

Bytes

Byte 1

For the ST52160WC, the Release (6) command cannot release SCSI ID’s 8–15. Use the Release (10) command.

Bits

76543210

000010111 1 LUN 3r d pty 3rd party device ID Extent 200000000 300000000 400000000 500000000

3rd pty

If the the 3rd pty bit is 1, the initiator releases the drive for another initiator. An initiator can only release a third-party reservation

bit is 0, the initiator releases its own reservation. If

Medalist Pro 2160N/2160WC Product Manual, Rev. A 53

that it made. The SCSI ID of the third-party initiator is specified in the

3rd party device ID

The

extent

bit must always be 0. The drive does not support extent reservations. If the ex tent bit is 1, the driv e generates a check condition status.

field.

3.4.13 Mode Sense (6) comm and (1AH)

When the initiator sends this command to the dr ive, it returns mode-page parameters to the initiator. This command is used in conjunction with the Mode Select command.

Bytes

000011010 1 LUN 0 DBD 0 0 0 2 PC Page code 300000000 4 Allocation length 500000000

Byte 1

Byte 2

76543210

A disable block descriptor (DBD) bit of zero indicates that the target may return zero or mo re block d escript ors in the return ed Mode Sense data. This is at the target’s discretion. A DBD bit of one specifies that the target will not return any block descriptors in the returned Mode Sense data.

The page control (PC)

Parameter bytes. Regardless of the value of the PC, the block descriptor always contains the current values.

PC bit 7 PC bit 6 Effect

0 0 Return current values. 0 1 Return changeable values. 1 0 Return default values. 1 1 Return saved values.

Bits

field determines the content of Mode

Byte 4

The

page code

The page codes are listed in Section 3.4.13.1 on page 54.

allocation length

The initiator has allocated for returned Mode Sense data. An allocation length of 0 means that no Mode Sense data is to be

is the designator that is unique t o each page.

specifies the number of bytes that the

54 Medalist Pro 2160N/2160WC Product Manual, Rev. A

transferred. This condition is not considered an error. Any other value represents the number of bytes to be transferred. For a description of the allocation length, see Section 3.4.13.1.

3.4.13.1 Page code and allocation length

The Mode Sense command descriptor block contains a page code (byte 2, bits 5–0) and an allocation length (byte 4). These parameters are described in the following table for SCSI-3 devices. You can transfer mode pages to the initiator either of two ways:

• Transfer all mode pages at once by using page code 3F

, or

• Transfer one mode page at a time by using the page c odes and any number greater than or equal to the allocation length of the mode page.

Page code

Allocation

length

Mode Sense data returned

4 bytes of Mode Sense header 8 bytes of block descriptor

2 bytes of mode-page header

10 bytes of Read/Write Error Recovery parameters

4 bytes of Mode Sense header

8 bytes of block descriptor

2 bytes of mode-page header 14 bytes of Disconnect/Reconnect parameters

4 bytes of Mode Sense header

8 bytes of block descriptor

2 bytes of mode-page header 22 bytes of Format Device parameters

4 bytes of Mode Sense header

8 bytes of block descriptor

2 bytes of mode-page header 22 bytes of Rigid Disc Geometry parameters

4 bytes of Mode Sense header 8 bytes of block descriptor

2 bytes of mode-page header

10 bytes of Verify Error Recovery Page parameters

4 bytes of Mode Sense header

20H

8 bytes of block descriptor 2 bytes of mode-page header 18 bytes of Caching parameters

Medalist Pro 2160N/2160WC Product Manual, Rev. A 55

Page

code

Allocation

length

Mode Sense data returned

4 bytes of Mode Sense header

8 bytes of block descriptor

2 bytes of mode-page header 10 bytes of Control Mode page parameters

4 bytes of Mode Sense header

10H

8 bytes of block descriptor 2 bytes of mode-page header 2 bytes of Unit Attention Page parameters

3.4.13.2 Mode Sense data

The Mode Sense parameter list contains a 4-byte header followed by an 8-byte block descriptor (if any), followed by the mode pages. The header and block descriptor are shown below. The mode pages are described in Appendix C on page 97.

Bytes

76543210

0 Mode Sense data length

1 (default) Medium type (00

2 WP=0 Reserved

3 (default) Block descriptor length (08

(Optional) Block descriptor

4 (default) Density code (00

5–7 Number of blocks

8 (default) Reserved (00

9–11 Block length

12–

Bits

Mode p a ge s

Mode pages

)

Byte 0

Byte 1 Byte 2

Mode Sense data length

The

specifies the number of bytes minus 1 of the Mode Sense data to be transferred to the initiator.

The

medium type WP (write protect)

The

is always 0.

bit is always 0, which means the

media is write-enabled.

56 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Byte 3

Byte 4 Bytes 5–7

Byte 8 Bytes 9–11

block descriptor length

The block descriptor. This value does not include the page headers and mode pages that follow the block descriptor, if any.

The

density code

number of blocks

The blocks available to the user.

Reserved

block length

The in each logical block described by the block descriptor.

is not supported.

specifies the number of bytes contained

is the number of bytes in the

field contains the t otal number of

3.4.14 Start/Stop Unit command (1BH)

When the drive receives the Start/S top Unit command, the dri ve either spins up or spins down, depending on the setting of the start bit in byte 4.

If the host adapter supports disconnection, the drive disconnects when it receives the Start/Stop Unit command and reconnects when it is up to speed and ready.

Bytes

0 00011011 1 LUN = 0 0 0 0 0 Immed 2 00000000 3 00000000 4 0000000Start 5 00000000

76543210

Bits

Byte 1

Byte 4

immediate (Immed)

If the the command is completed. If the Immed bit is 1, the drive returns the status when it receives the command.

If the

start

bit is 1, the drive spins up. If the

spins down.

bit is 0, the drive returns the status after

start

bit is 0, the drive

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3.4.15 Receive Diagnostic Results command (1CH)

When the drive receives the Receive Diagnostics command after powerup or after a Send Diagnostic command of PF=0, it sends eight diagnostic data bytes to the initiator. The drive supports the optional Page format wherein the initiator sends additional pages after a Send Diagnostic command. These additional pages have a page code that spec ifies to the drive the format of the data to be returned after it receives a Receive Diagnostic Results command.

Bytes

76543210

Bits

0 00011100 1 LUN = 0 00000 2 00000000

3–4 Allocation length

5 00000000

Bytes 3–4

allocation length

The

specifies the number of bytes the initiator has allocated for returned diagnostic result data. An allocation length of 0 means that no diagnostic data is transferred;

this is not an error.

The drive sends the lesser of the allocation l ength or the bytes available, whichever number is less.

3.4.15.1 Diagnostic data format

Bytes

76543210

0–1 (default) Additional length (0006

2–5 FRU code

6 Diagnostic error code

7 Vendor-unique error code

Bits

)

Byte 0–1

Bytes 2–5

additional length

The

value indicates t he number of additional bytes included in the diagnostic data lis t. A value of 0000

means that there are no additional bytes. A value of

0006

means that no product-unique bytes are available.

field replaceable unit (FRU)

If the FRU information. If the FRU code is 01

code is 00H, there is no

, replace the drive.

Other values are drive-unique.

58 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Byte 6 Byte 7

diagnostic error code

The

vendor-unique error codes

The

is not supported.

are listed in Section

3.4.15.2.

3.4.15.2 Diagnostic error codes

The following diagnostic error codes are reported in byte 7 of the diagnostic data format in Section 3.4.15.1.

Error code Description

01 02 09 44 80 81

H H H H

H H

Sequencer test error Microprocessor RAM diagnostic error Fatal hardware error during drive diagnostics EEPROM test error Buffer controller diagnostic error Buffer RAM diagnostic error

3.4.16 Supported Diagnostic Page s

The following table lists all of the diagnostic pages that supports the drive. If the Send Diagnostics command requests the Supported Diagnostics Page list (PF=1), the drive returns data in the format shown in the table below, after it receives the Receive Diagnostics Results command.

Bytes

76543210

0 Page Code (00 1 Reserved

2–3 Page Length (

Supported Page List (2)

Notes:

The page length field specifies the length in bytes of the supported page list.

The supported page lists contains a list of all diagnostic page codes implemented by the drive in ascending order begin-

Bits

)

–3) (1)

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ning with page code 00H. The drive supports only pages 00 and 40

3.4.17 Translate Address Page

The translate address page allows the initiator to translate a logical block address into a physical sector address or a physical sector address into a logical block address. The address t o be translated is passed to the target during the data-out phase. This phase is associated with the Send Diagnostics command and the results are r e turned t o the initiator during the data-in phase following the Receive Diagnostic command. The translated address is returned in the Translate Address Page as shown in the following tables.

Bytes

76543210

0 Page Code (40 1 Reserved

2–3

4 Reserved Supplied Format (3) 5 6

RAREA

(4)

ALTSEC

(5)

ALTTK

Translated Address (8)

Bits

Page Length

(000A) (2)

Rsrvd

(6)

(if available)

) (1)

Translated Format (7)

Notes:

The translate address page contains a 4-byte page header

that specifies the page code and length followed by 2 bytes, which describe the supplied format followed by the translated address.

The page length field contains the number of parameters that

follow. The Supplied Format field contains the value from the Send

Diagnostic command supplied format field.

. A reserved area (RAREA) bit of 1 indicates that all or part of

the translated address falls within a reserved area of the medium (such as speed tolerance gap, alternate sector and vendor-reserved area). If the entire translated address falls within a reserved area, the target may not return a trans-

60 Medalist Pro 2160N/2160WC Product Manual, Rev. A

lated address. A RAREA bit of zero indicates that no part of the translated address falls within a reserved area of the medium.

An alternate sector (ALTSEC) bit of 1 indicates that the translated address is physically located in an alternate sector of the medium. If the drive cannot determine whether all or part of the translated address is located in an alternate sector, it will set this bit to zero. An ALTSEC bit of zero indicates that no part of the translated address is located in an alternate sector of the medium or that the drive is unable to determine this information.

An alternate track (ALTTRK) bit of 1 indicates that part or all of the translated address is located on an alternate track. An ALTTRK bit of zero indicates that no part of the translated address is located on an alternate track of the medium.

The Translated Format field contains the value from the Send Diagnostic command translate format field).The values are 000 (Logical block format) or 101 (Physical sector address format).

The Translated Address field contains the address supplied by the initiator in the Send Diagnostic command. This field will be in the format specified in the translate format field. The supported formats are shown in the following tables.

Address Field Logical Block Address Format

Bytes

0–3 Logical Block Address

400000000 500000000 600000000

700000000

Bytes

0–2 Cylinder Number

3 Head Number

76543210

Address Field Physical Sector Format

76543210

Bits

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Address Field Physical Sector Format

Bytes

4–7 Sector Number

76543210

Bits

3.4.18 Send Diagnostic command (1DH)

When the drive receives this command, it performs diagnostic tests on itself. In systems that support disconnection, the drive disconnects while executing this command.

Bytes

0 00011101 1 LUN = 0 PF 0 2 00000000

3–4 Parameter list length

5 00000000

Byte 1

76543210

If the PF (Page Format) bit is set to 0 and the is set to 1, the drive performs the buffer RAM diagnostics, which is the default self-test. If the def ault self-test is requested, the parameter list length is 0 and no data is transferred. If the self-test passes successfully, the command terminates with a good status. If the self-test fails, the command terminates with a check condition status and the sense key is hardware error.

If the PF bit i s set to 1, SelfTest bit is 0, (DevOfL) and diagnostic page is sent as the parameter list. The supported pages are the

late Address

bytes for page 00 The DevOfL bit is not supported and must be 0 if

bit =1.

unit off line

Supported Pages

(40H) page. The parameter length is 4 (04H)

and 14 (0EH) bytes for page 40H.

Bits

Self

Test

Dev OfL

device off line

(UnitOfL) are ignored and a

(00H) page and the

Unit

OfL

SelfTest

Trans-

SelfTest

bit

Bytes 3–4

The UnitOfL bit is not supported and must be 0 if bit =1.

parameter list length

The

must be 0 if

SelfTest

bit =1.

SelfTest

62 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.5 Supported Diagno st ics Pa ge—Sen d Diag no stics

This page contains instructions for the drive to make available the list of all supported diagnostic pages to be returned by a subsequent Receive Diagnostics Results command. The definition of this page includes only

not

the first 4 bytes. If t he page length is

zero, the drive shall terminate the Send Diagnostics command with a Check Condition status. The Sense Key shall be set to Illegal Request with an additional sense code of Invalid Field Parameter List.

Supported Diagnostic Pages Page

Bytes

76543210

0 Page Code (00

Bits

)

1 Reserved

2–3 Page Length (Must Be Zero)

3.6 Translate Address Page—Send Diagnostic

The translate address page allows the initiator to translate a logical block address into a physical sector address or a physical sector address into a logical block address. The address t o be translated is passed to the drive with the Send Diagnostics command, and the results are returned to the initiator during the data-in phase following the Receive Diagnostic command. The format of the translate address page—Send Diagnostic, is shown in the following table. The translated address is returned in the translate address page returned after the Receive Diagnostic Results Command.

Bytes

76543210

0 Page Code (40

Bits

) (1)

1 Reserved

2–3

Reserved

Page Length

(000A

)

Supplied Format (1)

5 Reserved T ranslated Format (7) 6

Address To Translate (3)

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Notes:

The Supplied Format field specifi es the format of the address

to translate field. The valid values for this field are 000 for logical block address format or 101 for physical sector address format. If the drive does not support the requested format it terminates the Send Diagnostic command with a Check Condition status. The s ense key is set to Illegal Request and an additional sense code is set t o Invalid Fiel d in the Parameter List.

The Translate Format field specifies the format to which the initiator wants the address to be translated. The valid values for this field are 000 for logical block addr ess format or 101 for physical sector address format. The Translate Format field must be different than the Supplied Format field. If the drive does not support the requested format it terminates the command with a Check Condition status. The sense key is set to Illegal Request and an additional sense code is set to Invalid Field in Parameter List.

The Address to Translate field contains a single address that

the initiator is requesting the drive to t ranslate. The f ormat of this field is defined by the Supplied Format field.

For systems that support disconnection, the drive disconnects

while executing this command.

3.6.1 Read Capacity command (25H)

The initiator uses the Read Capacity command to determine the capacity of the drive. When the drive receiv es the Read Capacity command, it sends the initiator read capacity data, which is described in Section

3.6.1.1. on page 64.

Bytes

0 0010010 1 1 LUN 0000 0

2–5 Logical block address

6 0000000 0 7 0000000 0 8 0000000PMI 9 0000000 0

7654321 0

Bits

64 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes 2–5

Byte 8

The logical block address specified in the CDB cannot be greater than the logical block address reported by the drive in the read capacity data else check condition.

partial medium indicator (PMI)

If the block address in the CDB is also zero. The read capacity data returned by the drive contains the logical block address and block length of the last logical block of the drive.

If the PMI bit is 1, the drive returns the read capacity data, which contains the l ogical block address and block l ength of the last logical block address, after which a substantial delay (approximately 1 msec) in data transfer occurs. This logical block address must be greater than or equal to the logical block address specified in the CDB. This reported logical block address is a track (head) boundary.

3.6.1.1 Read Capacity data

The Read Capacity data is shown below.

Bytes

0–3 Logical block address 4–7 Block length (00000200

7654321 0

Bits

bit is zero, the logical

)

Bytes 0–3

Bytes 4–7

The logical block addres s is determined by t he PMI bit in the CDB of the Read Capacity command. The PMI bit is described in Section 3.6.1. on page 63.

The block length is always 512.

3.6.2 Read (10) command (28H)

When the drive receives the Read (10) com mand, it transfers data to the initiator. This command is the same as the Read (6) command discussed in Section 3.4.6 on page 45 except that in the CDB for the Read (10) command, a 4-byte logical block address and a 2-byte transfer length can be specified.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 65

Bytes

0 00101000 1 LUN DPO FUA 0 0 0

2–5 Logical block address

6 00000000

7–8 Transfer length

9 00000000

Byte 1

Bytes 2–5

Bytes 7–8

76543210

disable page out (DPO)

If the the drive receives during this command has the lowest priority for being retained in the cache. If the DPO is 0, the cached data has the highest pri ority for being retained in the cache.

If the

forced unit access (FUA)

the disc to get the data requested by the initiator, even if the data is available in the cache. If the FUA bit is 0, the drive can get the data from the cache or the disc.

The

logical block address

the read operation begins.

transfer length

The logical blocks of data to be transferred. A transfer length of 0 means that no logical blocks are to be transferred. This condition is not considered an error.

Bits

bit is 1, the cached data that

bit is 1, the drive must access

specifies the logical block where

specifies the number of contiguous

3.6.3 Write (10) command (2AH)

When the drive receives the Write (10) command, the drive writes the data from the initiator to the disc. This command is the same as the Write (6) command, except that the CDB for this com mand contains a 4- by te logical block address and a 2-byte transfer length. For more information about the Write (6) command, see Section 3.4.7 on page 46.

66 Medalist Pro 2160N/2160WC Product Manual, Rev. A

Bytes

0 00101010 1 LUN DPO FUA 0 0 0

2–5 Logical block address

6 00000000

7–8 Transfer length

9 00000000

Byte 1

Bytes 2–5

Bytes 7–8

76543210

disable page out (DPO)

If the the drive receives during this command has the lowest priority for being retained in the cache. If the DPO is 0, the cached data has the highest pri ority for being retained in the cache.

If the

forced unit access (FUA)

the disc to write the data sent by the initiator, even if the data can be stored in the cache. If the FUA bit is 0, the drive can write the data to the cache or the disc.

The

logical block address

the write operation begins.

transfer length

The logical blocks of data to be transferred. A transfer length of 0 means that no logical blocks are to be transferred; this is not an error.

Bits

bit is 1, the cached data that

bit is 1, the drive must access

specifies the logical block where

specifies the number of contiguous

3.6.4 Seek (10) command (2BH)

The Seek (10) command requests that the drive seek to the specified logical block address. This command is the same as the Seek (6) command, except that the CDB includes a 4-byte logical block address. The Seek (6) command is described in Section 3.4.8. on page 47.

Medalist Pro 2160N/2160WC Product Manual, Rev. A 67

Bytes

000101011 1 LUN 00000

2–5 Logical block address

600000000 700000000 800000000 900000000

76543210

Bits

3.6.5 Write and Verify command (2EH)

When the drive receives the Write and Verify command, it writes the data sent by the initiator to the media and then verifies that the data is correctly written.

If the host adapter supports disconnection, the drive dis connects while it is executing this command.

Bytes

000101110 1 LUN 0 0 0 BytChk 0

2–5 Logical block address

600000000

7–8 Transfer length

900000000

76543210

Bits

Byte 1

Bytes 2–5

Bytes 7–8

byte check (BytChk)

If the media after a write by checking the ECC syndromes. If the BytChk bit is one, the driv e ver ifies the media after a write by performing a byte-by-byte comparison of the dat a stored.

The

logical block address

where the drive begins writing and verifying the data.

transfer length

The logical blocks to be transferred. If the transfer length is 0, the initiator does not transfer any data and the drive does not write or verify any data. This condition is not considered an error.

field specifies the number of contiguous

bit is 0, the drive verifies the

field specifies the logical block

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3.6.6 Verify command (2FH)

When the drive receives the Verify command, it verifies the data on the disc. If the host adapter supports disconnection, the drive disconnects while it is executing this command.

Bytes

000101111 1 LUN 0 0 0

2–5 Logical block address

600000000

7–8 Verification Length

900000000

Byte 1

Bytes 2–5

Bytes 7–8

76543210

byte check (BytChk)

If the media by checking the ECC syndromes. If the BytChk bit is 1, the drive verifies the media by performing a byte-by-byte comparison of the data sent from the initiator.

The

logical block address

where the drive begins verifying the data.

verification length

The ous logical blocks to be verified. If the verification length is 0, the drive does not verify any logical blocks, although an implied seek is still performed. This condition is not considered an error.

Bits

Byt

Chk

bit is 0, the drive verifies the

field specifies the logical block

field specifies the number of contigu-

3.6.7 Read Defect Data command (37H)

When the drive receives this command, it reads the def ect data and transfers the defect data to the initiator.

This command can be used in conjunction with the Format Unit command. Read Defect Data reads the defect lists off the buffer memory and resends the lists as defect data but does not change the lists.

The Read Defect Data command can be used to access two types of defect lists: the These lists are described in Section 3.4.4.1. on page 40.

primary defect list (PList)

and the

grown defect list (GList)

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Bytes

76543210

Bits

000110111 1 LUN 00000 2000PListGListDefect list format 300000000 400000000 500000000 600000000

7–8 Allocation length

900000000

PList

Byte 2

If the

bit is 1, the drive sends the primary defect list. If the PList bit is 0, the drive does not send the primary defect list.

If the

GList

bit is 1, the drive sends the grown defect list. If the GList bit is 0, the drive does not send the grown defect list.

If both the PList and GList bits are zero, the drive returns the defect list header only.

If the defect list format field contains 101

the drive returns

the defect data in the physical sector format. If the defect list format field contains 000

or 100B, the drive returns the

defect data in the default format, which is the physical sector format, and generates a check condition status.

Bytes 7–8

The allocation length specifies the number of bytes the initiator has allocated f or the returned defect data;

not an error.

An allocation length of 0 indicates that no

this is

defect data is transferred. The data-in phase ends when the allocation length bytes have been transferred or when all available defect data has been transferred to the ini tiator, whichever is less.

70 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.6.7.1 Defect list header

The defect data always begins with a 4-byte header, followed by an 8-byte descriptor for each defect. The defect list header format is described below.

Bytes

000000000 1 0 0 0 PList GList Defect list format

2–3 Defect List Length

Byte 1

Bytes 2–3

76543210

PList

If the defect list. If the PList bit is 0, the def ect data does not contain the primary defect list.

If the list. If the GList bit is 0, the defect data does not contain the grown defect list.

The page 68.

The defect list length always specifies the length of the defect data in bytes, even if the allocation length (in the CDB) is not large enough to accommodate all the defec t descriptors. If the PList and GList bits are 0, no defect descriptor bytes are sent to the initiator and t he defect list length is 0.

bit is 1, the defect data contains the primary

GList

bit is 1, the defect data contains the grown defect

defect list format

Bits

field is described in Section 3.6.7. on

3.6.8 Write Data Buffer command (3BH)

The Write Data Buffer command supports several dif ferent features. It can be used with the Read Data Buffer command to diagnose problems in the drive’s data buffer memory and to test the integrity of the SCSI bus.

You can also use the Write Data B uffer command to download microcode to the buffer and to save it in flash memory.

Note.

This command treats the buffer as a single segment, regar dless of the number of segments specified in Caching page 08 (Caching page 08

is described in Section C.6.3. on page 110.)

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Bytes

76543210

Bits

000111011 1 LUN 0 0 Mode 2 Buffer ID (00

)

3–5 Buffer offset 6–8 P arameter list length

900000000

Byte 1

If the

mode

bits contain 000B, the initiator transfers data to the drive buffer with a 4-byte header that contains all zeros. This mode is called

If the

mode

bits contain 010B, the initiator transfers data to

write combined header and data

the drive buffer without the header. This mode is called

data

mode

If the

bits contain 101B, the initiator downloads microcode to the drive buffer, and the drive saves the microcode in flash memory. The drive uses the new microcode for all future operations. This mode is called

and save

download microcode

After the microcode has been successfully downloaded, the drive generates a unit attention condition of

been downloaded

for all initiators except the one that issued

microcode has

the current Write Data Buffer command.

write

Byte 2 Byte 3–5

Bytes 6–8

All other settings for the mode bits are reserved. This field is ignored if the mode bits are 101

buffer offset

The

is added to the starting address of the

buffer to determine the destination of the first data byte. The bytes that follow are placed in sequential addresses. If the sum of the buffer offset and the transfer length exceeds the buffer size reported by the Read Data Buffer command (see Section 3.6.9), the drive generates a check condition status and the initiator does not transfer any data. This field is ignored if the mode bits are 101

parameter list length

The

field specifies the maximum num-

ber of bytes the initiator transfers. If the initiator transfers the 4-byte header, the transfer length includes the header. If the transfer length is zero, no data is transferred to the drive buffer; this is not considered an error. The field is ignored if the mode bits are 101

72 Medalist Pro 2160N/2160WC Product Manual, Rev. A

3.6.9 Read Data Buffer command (3CH)

The Read Data Buffer command supports several different features. The Read Data Buffer command can be used along with the Write Data Buffer command to diagnose problems in the drive’s data buffer memory and to test the integrity of the SCSI bus.

Note.

Bytes

This command treats the buffer as a single segment, regardless of the number of segments specified in mode page (08 (08

), the Caching page, is described in Section C.6. on page 108).

). (Mode page

Bits

76543210

000111100 1 LUN 0 0 Mode 2 Buffer ID (00

)

3–5 Buffer offset 6–8 Allocation length

900000000

Byte 1

If the mode bits contain 000

the initiator reads dat a from

the drive buffer. The data is preceded by a 4-byte header . This mode is called

read combined header and data.

If the mode bits contain 010B, the initiator reads data from the drive buffer without a header. This mode is called

If the

mode

bits contain 011

a maximum of 4 bytes of

read data.

READ BUFFER descriptor information is returned. The drive returns the descriptor information for the buffer specified by the buffer ID.

If there is no buffer associated with the specified buffer ID, the drive returns all zeros in the READ BUFFER descriptor. The buffer offset is reserved in this mode. The allocation length should be set to four or greater. The drive transfers the lesser of the allocation length or 4 bytes of READ BUFFER descriptor.

READ BUFFER Descriptor

Bytes

76543210

Bits

0 Offset Boundary

1–3 (MSB) Buffer Capacity (LSB)

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The offset boundary field returns the boundary alignment within the selected buffer for subsequent WRITE BUFFER and READ BUFFER commands. The value contained in th e offset boundary field shall be interpreted as a power of two.

Buffer Offse t Boundary

Offset Boundary 20 Offset Boundary Buffer Offsets

= 32 32-byte boundaries

0 is the only

Not Applicable

supported buffer

offset

The buffer capacity field returns the size of the s elected buffer in bytes.

mode

All other settings for the

bits are reserved.

Byte 2 Byte 3–5

buffe r ID

The

buffer offset

The

is not supported and must always be zero.

is added to the starting address of the buffer to determine the source of the first data byte. The bytes that follow are read from sequential addresses. If the sum of the buffer offset and the transfer length exceeds the available length reported in the Read Buffer header (see Section 3.6.9.1), the drive transfers all the data contained in the buffer.

Bytes 6–8

The

allocation length

field specifies the maximum number of bytes read by the initiator. If the 4-byte header is transferred, the transfer length includes the header. If the transfer length is zero, no data is read;

this is not an error.

3.6.9.1 Read Buffer Header

The following table shows the structure of the 4-byte Read Buffer Header.

Bytes

76543210

1–3 Buffer capacity

Bytes 1–3

buffer capacity

The buffer. Byte 1 is MSB; byte 3 is LSB.

Bits

field specifies the size of the drive

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3.6.10 Read Long command (3EH)

When the drive receives the Read Long command, it transfers data to the initiator.

Bytes

000111110 1 LUN 00000

2–5 Logical block address

600000000

7–8 Byte transfer length

900000000

Bytes 2–5

Bytes 7–8

76543210

logical block address

The begins reading data.

byte transfer length

The transferred to the initiator. The drive transfers the logical block size plus twenty. If the byte transfer length is 0, the drive does not transfer any data to the initiator. This condition is not considered an error. Otherwise, transfer length must be 532 (214

Bits

specifies the LBA where the drive

specifies the number of bytes

) Bytes.

3.6.11 Write Long command (3FH)

When the drive receives the Write Long command, it writes one logical block of data and twenty bytes of error correction code (ECC) to the disc. During this command, the drive does not perform any ECC verification.

Bytes

000111111 1 LUN 00000

2–5 Logical block address

600000000

7–8 Byte transfer length

900000000

Bytes 2–5

76543210

logical block address

The begins writing data.

Bits

specifies the LBA where the drive

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Bytes 7–8

byte transfer length

The initiator transfers to the drive.

If the transfer length does not equal the sum of the logical block size plus twenty, the command is terminated with a check condition status.

If the byte transfer length is zero, the initiator does not transfer any data to the drive; this condition is not considered an error. Otherwise, the transfer length must be 532 (214

) bytes.

specifies the number of by tes the

3.7 Group 2 commands

3.7.1 Log Select command (4CH)

The Log Select command (4CH) provides a means for an initiator to manage the statistical data maintained by the drive about drive operation. Initiators that implement the Log Select command shall also implement the Log Sense command.

Note.

The data is structured in log pages and is managed through the log parameters within log pages. The Log Select command allows the initiator to select log pages and provides global management for the logs it selects. The initiator can select 0 or additional log pages.

The initiator should issue the Log Sense command before issuing the Log Select command to determine supported pages and page length.

Bytes

001001100 1 Reserved PCR SP 2 PC Reserved

3-6 Reserved

7–8 Parameter list length

900000000

Byte 1

76543210

parameter code reset (PCR)

If the parameter list length is 0, all implemented parameter values will be set to their factory-default values. If the PCR bit is set to 1 and the parameter list length is greater than 0, the command is terminated and a CHECK CONDITION status is issued. The sense key will be set to ILLEGAL

Bits

bit is set to 1 and the

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REQUEST and the additional sense code will be set to INVALID FIELD IN CDB . If the PCR bit is set to 0, the log parameters will not be reset.

The

save parameters (SP)

bit determines whether the drive will save to nonvolatile memory all parameters indentified as savable in the

disable save (DS)

bit of the log page after a Log Select operation c ompletes. If the bit is set t o 1, the parameters are saved. If the bit is set to 0, the parameters are not saved.

If the drive does not implement saved parameters for any log parameter and the SP bit is set to 1, the c ommand is terminated and a CHECK CONDITION status is issued. The sense key is set to ILLEGAL REQUEST and the additional sense code is set to INVALID FI ELD IN CDB. If the PCR bit is set to 0, the log parameters will not be reset.

It is not an error to set the SP bit to 1 and the DS bit to 1. In this case the parameter values are not saved.

Byte 2

The page control (PC) field defines the type of parameter values to be selected.

The page control values for the Log Select command are:

Type Parameter values

Bytes 7–8

The

parameter list length

Threshold value Cumulative value Default threshold value Default cumulative value

field specifies the length in bytes of the parameter list. If t he parameter length is z ero, no pages are transferred.

This is not an error condition.

If the initiator sends page codes or parameter codes within the parameter list not reserved or not implemented, the drive terminates the Log Select command and returns a CHECK CONDITION status. The sense key is set to ILLEGAL REQUEST and the additional sense code is set to INVALID FIELD IN PARA MET ER LIS T.

If a parameter list length field specifies the lengt h in the truncation of any log parameter, the drive terminates the command and returns a CHECK CONDITION status. The sense key will be set to ILLEGAL REQUEST and the additional sense code will be set to INVALID FIELD IN CDB.

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If multiple log pages are sent to the data buffer, they should be sent in ascending order by page code. If there are multiple parameters within a page, they should be sent in ascending order by parameter code. If the page codes are sent out of order, the device server should return CHECK CONDITION status. The sense key will be set to ILLEGAL REQUEST, and the additional sense code will be set to INVALID FIELD IN PARA MET ER LIS T.

3.7.1.1 Log page format

The log page format allows the initiator to specify attributes it wants to monitor and provides additional parametric instructions t hat t he init iator can set for the specific attribute. Both the Log Select command and the Log Sense command use the Log page. However, the Log Sense command does not use all of the functions of the Log page. This section discusses the Log page format and applies to both commands. Differences in how the Log Sense command uses log pages are discussed in the Log Sense section.

Bytes

0 Reserved Page Code 1 Reserved

2–3 Page length (

4 to

76543210

Log Parameter Structure

Log Parameter (First)

x + 3

n –

Log Parameter (last)

Bits

–3)

(Length x bytes

(Length

bytes

)

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Byte 0

The page code is the code assigned to an attribute the drive monitors. It specifies the log page that is being transferred. The page codes the drives support are listed and described below:

Page Description

02 03 05 06 37

H H H H H

Error Counter Page (Write) Error Counter Page (Read) Error Counter Page (Verify) Nonmedium Error page Cache Statistics page

Parameter codes 00H through 06H specify six counters each for write, read and verify errors (18 counters). A description of the type (category of error) counters specified by codes 00

through 06H are described

below.

Parameter Code 00

—

Error Corrected Without Substantial Delay

. An error correction was applied to get perfect data (also known as ECC on-the fly).

Without Substantial Delay

means the correction did not postpone reading of later sectors (that is, a revolution was not lost). T he counter is incremented once for each logical block that requires correction. Two different blocks corrected during the same command are counted as two events.

Parameter Code 01

Error Corrected with Possible Delays

. An error

—

code or algorithm (that is, ECC, checksum) is applied to get perfect data with substantial delay.

With Possible Delays

means the correction took longer than a sector time so that reading/writing of subsequent sectors was delayed (that is, a lost revolution). The counter is incremented once for each logical block that requires correction. A block with a double error that is correctable counts as one event and two different blocks corrected during the same command count as two events.

Parameter Code 02H—

Total (rewrites or rereads)

.This parameter code specifies the counter counting the number of errors that are corrected by applying retries. This counts errors recovered, not the number of retries. If five retries are required to recover one block of data, then one is added to the counter, not five. The counter is increased once for each logical block that is recovered using retries. If an error is not recoverable while applying retries and is recovered by ECC, it is not counted by this counter; it is counted by the counter specified by parameter code 01

—Error

Corrected with Possible Delay.

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Parameter Code 03H—

Total Errors Co rrected.

This counter counts the total of all correctable errors encountered. It is the sum of the counters specified by parameter codes 01

and 02h. There is no double counting

of data errors among these two counters and all correctable data errors are counted in one of these counters.

—

Parameter Code 04

Total Times Correction Algorithm Processed

This parameter code specifies the counter that counts the total number of retries, or times the retry algor ithm is invoked. If after five attempts a counter 02

type error is recovered, then five is added to this counter. If

three retries are required to get a stable ECC syndrome before a counter

type error is corrected, then three retries are also counted. The

number of retries applied to unsuccessfully recover an error (counter 06 type error) are also counted by this counter.

Parameter Code 05

—

Total Bytes Processed. This parameter code

specifies the counter that counts the total number of bytes either successfully or unsuccessfully read, written or verified (depending on the log page) from the di sc drive. If a t ransfer terminates early bec ause of an unrecoverable error, only the logical blocks up to and including the one with the unrecoverable error ar e c ounted. Data bytes transferred to the initiator during a Mode Select, Mode Sense, Inquiry and Write Data Buffer, do not count; only user-data bytes are counted by this counter.

—

Parameter Code 06

Total Uncorrected Errors. This parameter

code specifies the counter that contains the total number of blocks for which an unrecoverable data error has occurred.

Bytes 2–3

Bytes 4–

The page length fi eld specifies the lengt h of the attached log parameters in bytes. If the application client sends a page length that is inadequate and truncates any parameter, the device server terminates the command and issues a CHECK CONDITION status. The sense key is set to ILLEGAL REQUEST and the additional sense code is set to INVALID FIELD IN PARA MET ER LIS T.

Log parameters are the special data structure for each page code used in the l og page. Log parameters may be data counters that record a count of a particular event (or events), the circumstances under which certain operations were performed, or list parameters (strings) that contain a description of a particular event. The log parameter format is shown and described on the following page.

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Bytes

0–1 Parameter Code

2 DU DS TSD ETC TMC Reserved LP 3 Parameter length ( 4

7654321 0

Bytes 1–0

Byte 2

The page code is the code assigned to an attribute the drive monitors.

The collective field in byte 2 is referred to as the parameter control byte. For t he Log Select command, thes e bits perform a control function; for the Log Sense command, they report the drive settings. A description of each bit is provided below:

The

disable update (DU)

updates cumulative log parameter values. When the DU bit is 0, the drive updates the log parameter values to reflect all events that should be noted by that parameter. When the DU bit is 1, the drive does not update the log parameter value except in res ponse to a Log Select command that specifies a new value for the parameter.

The drive uses volatile memory to hold cumulative values. The values are lost during a power cycle unless the initiator commands the drive to save them in nonvolatile memory.

Bits

–3)

Parameter value

bit determines whether the drive

The DU bit is not defined for threshold values or list parameters.

The

disable save (DS)

the log parameter. When DS is 0, the drive saves the current cumulative or threshold parameter value when the SP bit in the Log Select or Log Sense command is 1. When DS is 1, the drive saves the current cumulative or threshold parameter value when the SP bit in the Log Select or Log Sense command is 1.

The

target save disable (TSD)

the log page data automatically to ensure statistical significance. When TSD is 0, the drive saves at a frequency determined by Seagate. When TSD is 1, the drive does not automatically save.

When the threshold value is compared to the cumulative value each

enable threshold comparison ( E TC)

bit indicates whether the drive saves

bit enables the drive to save

bit is 1, the

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time the cumulative value is updated. When the ETC bit is 0 no comparison is made. The ETC bit value is the same for both the threshold and cumulative values.

The

threshold met criteria (TMC)

bit defines the basis for comparison of the cumulative and threshold values. The TMC field is valid only when ETC is 1. The codes used in this field are listed below.

Code Basis for Comparison

Notify of every update of cumulative value

Cumulative value equal to threshold value

Cumulative value not equal to threshold value

Cumulative value greater than threshold value

If the ETC bit is 1

and the comparison result is true, a unit attention condition is generated for all initiators. When reporting the unit attention condition, the drive sets the sense key to unit attention condition and the additional sense code to threshold condition met.

The

list parameter (LP)

bit indicates the log parameter format. When the LP bit is 0, the parameter is a data counter. When the LP bit is 1, the parameter is a list parameter (an ASCII string). The drive does not support list parameters.

Data counters are associated with one or more events and are incremented whenever one of the events occur. The data counter may have a maximum value assigned to it. If that value is reached, the drive sets the DU bit to 1. Setting the DU bit to 1 causes all of the other counters in the log page to cease counting. If the data counter reaches its maximum value during the execution of a command, the drive completes the command. Drive counter updates are performed in the background. I f the command completes correctly and if the report log exception condition (RLEC) bit in Control Mode Page 0A

is set to 1, the drive issues a

Unit Attention with the additional sense code set to Log Counter at Maximum. The counters do not restart automatically if the overflowed counter is reinitialized.

Byte 3

The

parameter length

field specifies the lengt h in bytes of

the parameter that follows. If the initiator sends a par ameter

9. Compar ison made at every u pdate of cumulative value.

10. The RLEC bit in Mode Page 0A

must also be 1.

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length value that causes the parameter value to truncate, the drive terminates the command with a Check Condition status. The sense key is set to Illegal Request with additional sense code set to Invalid Field Parameter List.

BByte 4

The

parameter value

an unsigned counter value. The initiator sends counts to set values into counters in the drive, and the drive returns counter values to the initiator. The initiator is responsible for issuing a Log Sense command to learn the parameter length the drive has selected.

field uses 1, 2, 4 or 8 bytes to transmit

3.8 Log Sense comman d (4DH)

The Log Sense command (4DH) provides a means for an initiator to manage the statistical data maintained by the drive about drive operation. Initiators that implement the Log Select command also implement the Log Sense command.

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3.9 Reserve (10) command (56H)

The Reserve (10) command is used to reserve a logical unit. The 3rd Party reservation allows logical units to be reserved for another specified SCSI device.

Bytes

76543210

0 Operation Code (56

Bits

)

3rd

1 Logical Unit Number

(1)

Party

(2)

Reserved Extent

2 Reservation Identification (4) 3 3rd Party Device ID not supported 4 Reserved 5 Reserved

Reserved

7–8 Extent List Length (3)

9 Control Byte (5)

Notes:

. The Logical Unit Number must be 0.

If bit 4 is 0, byte 2 must also be 0.

If bit 4 is 1, byte 2 identifies the SCSI bus ID of the device for which the drive is reserved.

(3)

Extent not supported

Must be 0 if not supported by the drive.

Normally all zeros. Control Byte can be supported as a special

factory-installed option.

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3.10 Release (10) command (57H)

The Release (10) command is used to release a pr eviously reserved logical unit. It is not an error for an initiator to attempt to release a reservation that is not currently valid. In this case, the drive returns a GOOD status without altering any other reservation.

Bytes

76543210

Bits

0 Operation Code (57

Logical Unit Number

(1)

3rd

Party

(2) 2 Reservation Identification (4) 3 3rd Party Device ID (2) 4 Reserved 5 Reserved

6 7

Reserved

9 Control Byte (5)

Notes:

The Logical Unit Number must be zero.

)

Reserved

Extent

(3)

If bit 4 is 0, bits 3, 2, and 1 are 0. If bit 4 is 1,

bits 3, 2 and 1 identify the SCSI bus ID of the device that reserves the drive.

Extent not supported

Must be zero if not supported by the drive.

. Normally all zeros. Control Byte can be supported as a special

factory-installed option.

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3.11 Group 3 and 4 commands

Group 3 commands are reserved. Group 4 commands are 16-byte commands. Group 4 commands are not supported. If the drive receives one of these commands, it returns a check condition status.

Caution.

Do not use Group 3 and 4 commands. If you do, you may destroy data on the disc.

3.12 Group 5 and 6 commands

Group 5 and 6 commands are 12-byte commands. Group 5 commands are not implemented. If the drive receives a Group 5 command, it returns a check condition status. Group 6 commands are reserved for Seagate use.

Caution.

Do not use Group 6 commands. If you do, you may destroy data on the disc.

3.13 Group 7 commands

Group 7 commands are 10-byte commands. These commands are not implemented. If the dr ive r ec eives one of these commands, it returns a check condition status.

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Appendix A. Supported messages

A.1 Messages

The implemented 1- and 2-byte messages are listed below.

Must

Code Message name Direction

Abort O Yes

Abort tag O Yes

Bus device reset O Yes

Clear queue O Yes

Command complete I —

Disconnect

Identify I/O No

Initiator detected error O Yes

Message parity error O Yes

Message reject I/O Yes

No operation

Head of queue tag

Ordered queue tag

Simple queue tag

Ignore Wide Residue

Save data pointer I —

I—

OYes ONo ONo ONo

I—

negate ATN

before last

ACK?

_____________________

11. These are 2-byte messages.

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A.2 Synchronous Data Tran sfe r Requ est message

(01H)

The synchronous Data Transfer Request message is an extended message.

Depending on the value contained in the SSM bit (contained in byte 2 of the Operating page in Appendix D.2.2. on page 121), the drive or the initiator can negotiate for synchronous data transfer after a reset. If any problem precludes the successful exchange of synchronous Data Transfer Request messages, the initiator and drive default to asynchronous data transfers. Also, reception of a Wide Data Transfer Request message sets the drive to the default asynchronous transfers.

This exchange of messages establishes the minimum transfer period and the maximum allowed REQ/ACK offset.

Bytes

Byte 0 Byte 1 Byte 2

Byte 3

Byte 4

Bits

7 6 543210

0 Extended message (01 1 Extended message length (03 2 Identifier code (01

)

3 Minimum transfer period divided by 4 4 REQ/ACK offset

This byte identifies the message as an extended message. This byte reports the length of the message. This byte identifies the message as a synchronous data transfer

request message. The value contained in this byte is in nsec. It is equal to the

minimum period in which the device can receive data, in units of 4 nsec. In byte 3, the minimum value supported by the drive is

, which is equivalent to a transfer period of 48 nsec, or a

maximum external transfer rate of 20 Mbytes per second. A value of 19

is equivalent to a transfer period of 100 nsec, or a

maximum external transfer rate of 10 Mbytes per second. A value of 32

is equivalent to a transfer period of 200 nsec, or a

maximum external transfer rate of 5 Mbytes per second.

REQ/ACK offset

The

is the maximum number of REQ pulses that may be outstanding before its corresponding ACK pulse is received at the target. A REQ/ACK offset of zero indicates asynchronous mode. The drive supports a maximum REQ/ACK offset of 0F

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A.2.1 Wide Data Transfer Request Messa ge

Bytes

0 Extended message (01 1 Extended message length (02 2 Wide Data Transfer Request code (03

76 54321 0

)

3 Transfer Width Exponent

The originating SCSI device (the SCSI device that sends the first pair of WDTR messages) sets its transfer value to the maximum data path it chooses to accommodate.

If the responding SCSI device can also accom modate this transfer width, it returns the same value in its WDTR message. If it requires a smaller transfer width, it substitutes a smaller value in its WDTR message. The successful completion of an exchange of WDTR messages implies an agreement as follows:

Bits

Responding Device

WDTR Response

Implied Agreement

Each device transmits and receives data with a transfer

Nonzero transfer width

width equal to the responding SCSI devices’

transfer width Transfer width equal to zero MESSAGE REJECT message

8-bit data transfer

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