Fujitsu MHC2032AT, MHD2032AT, MHD2021AT, MHC2040AT User Manual

MHC2032AT, MHC2040AT
MHD2032AT, MHD2021AT

DISK DRIVES

PRODUCT MANUAL

C141-E050-02EN

FOR SAFE OPERATION

Handling of This Manual

This manual contains important information for using this product. Read thoroughly before using
the product. Use this product only after thoroughly reading and understanding especially the
section “Important Alert Items” in this manual. Keep this manual handy, and keep it carefully.

FUJITSU makes every effort to prevent users and bystanders from being injured or from suffering
damage to their property. Use the product according to this manual.

IMPORTANT NOTE TO USERS

READ THE ENTIRE MANUAL CAREFULLY BEFORE USING THIS PRODUCT.
INCORRECT USE OF THE PRODUCT MAY RESULT IN INJURY OR DAMAGE TO
USERS, BYSTANDERS OR PROPERTY.

While FUJITSU has sought to ensure the accuracy of all information in this manual, FUJITSU
assumes no liability to any party for any damage caused by any error or omission contained in this
manual, its updates or supplements, whether such errors or omissions result from negligence,
accident, or any other cause. In addition, FUJITSU assumes no liability with respect to the
application or use of any product or system in accordance with the descriptions or instructions
contained herein; including any liability for incidental or consequential damages arising therefrom.
FUJITSU DISCLAIMS ALL WARRANTIES REGARDING THE INFORMATION
CONTAINED HEREIN, WHETHER EXPRESSED, IMPLIED, OR STATUTORY.

FUJITSU reserves the right to make changes to any products described herein without further
notice and without obligation.

The contents of this manual may be revised without prior notice.

The contents of this manual shall not be disclosed in any way or reproduced in any media without
the express written permission of Fujitsu Limited.

All Rights Reserved, Copyright

 FUJITSU LIMITED 1998

C141-E050-02EN

Revision History

(1/1)

Edition Date Revised section (*1)

(Added/Deleted/Altered)

01 1998-02-15 — —
02 1998-0-

Details

*1 Section(s) with asterisk (*) refer to the previous edition when those were deleted.

C141-E050-02EN

This manual describes the MHC Series and MHD Series, 2.5-inch hard disk drives.
These drives have a built-in controller that is compatible with the ATA interface.

This manual describes the specifications and functions of the drives and explains in
detail how to incorporate the drives into user systems. This manual assumes that
the reader has a basic knowledge of hard disk drives and their implementations in
computer systems.

This manual consists of seven chapters and sections explaining the special
terminology and abbreviations used in this manual:

Overview of Manual

CHAPTER 1 Drive Overview

This chapter gives an overview of the MHC Series and MHD Series and describes
their features.

Preface

CHAPTER 2 Drive Configuration

This chapter describes the internal configurations of the MHC Series and MHD
Series and the configuration of the systems in which they operate.

CHAPTER 3 Conditions Installation

This chapter describes the external dimensions, installation conditions, and switch
settings of the MHC Series and MHD Series.

CHAPTER 4 Theory of Drive Operation

This chapter describes the operation theory of the MHC Series and MHD Series.

CHAPTER 5 Interface

This chapter describes the interface specifications of the MHC Series and MHD
Series.

CHAPTER 6 Operations

This chapter describes the operations of the MHC Series and MHD Series.

Terminology

This section explains the special terminology used in this manual.

Abbreviation

This section gives the meanings of the definitions used in this manual.

C141-E050-02EN i

Preface

This indicates a hazarous situation could result in

minor or moderate personal injury if the user does

not perform the procedure correctly. This alert signal

also indicates that damages to the product or other

property, may occur if the user does not perform the

procedure correctly.

This indicates information that could help the user

use the product more efficiently.

Conventions for Alert Messages

This manual uses the following conventions to show the alert messages. An alert
message consists of an alert signal and alert statements. The alert signal consists of
an alert symbol and a signal word or just a signal word.

The following are the alert signals and their meanings:

In the text, the alert signal is centered, followed below by the indented message. A
wider line space precedes and follows the alert message to show where the alert
message begins and ends. The following is an example:

(Example)

Data corruption: Avoid mounting the disk drive near strong
magnetic sources such as loud speakers. Ensure that the disk drive is
not affected by external magnetic fields.

The main alert messages in the text are also listed in the “Important Alert Items.”

Operating Environment

This product is designed to be used in offices or computer rooms.

For details regarding the operating environment of use, refer to the
(Cnnn-Xnnn) and the
(Cnnn-Xnnn).

Attention

Please forward any comments you may have regarding this manual.

To make this manual easier for users to understand, opinions from readers are
needed. Please write your opinions or requests on the Comment at the back of this
manual and forward it to the address described in the sheet.

ii C141-E050-02EN

Liability Exception

“Disk drive defects” refers to defects that involve adjustment, repair, or
replacement.

Fujitsu is not liable for any other disk drive defects, such as those caused by user
misoperation or mishandling, inappropriate operating environments, defects in the
power supply or cable, problems of the host system, or other causes outside the
disk drive.

Preface

C141-E050-02EN iii

Important Alert Items

A hazardous situation could result in minor or moderate personal

injury if the user does not perform the procedure correctly. Also,

damage to the predate or other property, may occur if the user does not

perform the procedure correctly.

Alert message

Page

Normal Operation

Data corruption: Avoid mounting the disk near strong

magnetic soures such as loud speakers. Ensure that the disk

drive is not affected by extrnal magnetic fields.

3-6

Important Alert Messages

The important alert messages in this manual are as follows:

Task

C141-E050-02EN v

Contents

CHAPTER 1 Device Overview........................................................................1-1

1.1 Features 1-2

1.1.1 Functions and performance 1-2

1.1.2 Adaptability 1-2

1.1.3 Interface 1-3

1.2 Device Specifications 1-4

1.2.1 Specifications summary 1-4

1.2.2 Model and product number 1-6

1.3 Power Requirements 1-6

1.4 Environmental Specifications 1-8

1.5 Acoustic Noise 1-8

1.6 Shock and Vibration 1-9

1.7 Reliability 1-9

1.8 Error Rate 1-10

1.9 Media Defects 1-10

CHAPTER 2 Device Configuration................................................................2-1

2.1 Device Configuration 2-2

2.2 System Configuration 2-4

2.2.1 ATA interface 2-4

2.2.2 1 drive connection 2-4

2.2.3 2 drives connection 2-5

C141-E050-02EN vii

Contents

CHAPTER 3 Installation Conditions..............................................................3-1

3.1 Dimensions 3-2

3.2 Mounting 3-4

3.3 Cable Connections 3-8

3.3.1 Device connector 3-8

3.3.2 Cable connector specifications 3-9

3.3.3 Device connection 3-9

3.3.4 Power supply connector (CN1) 3-10

3.4 Jumper Settings 3-10

3.4.1 Location of setting jumpers 3-10

3.4.2 Factory default setting 3-11

3.4.3 Master drive-slave drive setting 3-11

3.4.4 CSEL setting 3-12

CHAPTER 4 Theory of Device Operation...................................................... 4-1

4.1 Outline 4-2

4.2 Subassemblies 4-2

4.2.1 Disk 4-2

4.2.2 Head 4-2

4.2.3 Spindle 4-3

4.2.4 Actuator 4-3

4.2.5 Air filter 4-3

4.3 Circuit Configuration 4-4

4.4 Power-on Sequence 4-6

4.5 Self-calibration 4-7

4.5.1 Self-calibration contents 4-7

4.5.2 Execution timing of self-calibration 4-8

4.5.3 Command processing during self-calibration 4-9

4.6 Read/write Circuit 4-9

viii C141-E050-02EN

Contents

4.6.1 Read/write preamplifier (PreAMP) 4-9

4.6.2 Write circuit 4-10

4.6.3 Read circuit 4-12

4.6.4 Digital PLL circuit 4-13

4.7 Servo Control 4-14

4.7.1 Servo control circuit 4-14

4.7.2 Data-surface servo format 4-18

4.7.3 Servo frame format 4-18

4.7.4 Actuator motor control 4-19

4.7.5 Spindle motor control 4-20

CHAPTER 5 Interface.....................................................................................5-1

5.1 Physical Interface 5-2

5.1.1 Interface signals 5-2

5.1.2 Signal assignment on the connector 5-3

5.2 Logical Interface 5-6

5.2.1 I/O registers 5-7

5.2.2 Command block registers 5-8

5.2.3 Control block registers 5-13

5.3 Host Commands 5-13

5.3.1 Command code and parameters 5-14

5.3.2 Command descriptions 5-16

5.3.3 Error posting 5-68

5.4 Command Protocol 5-70

5.4.1 Data transferring commands from device to host 5-70

5.4.2 Data transferring commands from host to device 5-72

5.4.3 Commands without data transfer 5-74

5.4.4 Other commands 5-75

5.4.5 DMA data transfer commands 5-75

5.5 Ultra DMA Feature Set 5-77

5.5.1 Overview 5-77

C141-E050-02EN ix

Contents

5.5.2 Phases of operation 5-78

5.5.2.1 Ultra DMA burst initiation phase 5-78

5.5.2.2 Data transfer phase 5-79

5.5.2.3 Ultra DMA burst termination phase 5-79

5.5.3 Ultra DMA data in commands 5-80

5.5.3.1 Initiating an Ultra DMA data in burst 5-80

5.5.3.2 The data in transfer 5-81

5.5.3.3 Pausing an Ultra DMA data in burst 5-81

5.5.3.4 Terminating an Ultra DMA data in burst 5-82

5.5.4 Ultra DMA data out commands 5-85

5.5.4.1 Initiating an Ultra DMA data out burst 5-85

5.5.4.2 The data out transfer 5-85

5.5.4.3 Pausing an Ultra DMA data out burst 5-86

5.5.4.4 Terminating an Ultra DMA data out burst 5-87

5.5.5 Ultra DMA CRC rules 5-89

5.5.6 Series termination required for Ultra DMA 5-91

5.6 Timing 5-92

5.6.1 PIO data transfer 5-92

5.6.2 Single word DMA data transfer 5-94

5.6.3 Multiword DMA data transfer 5-95

5.6.4 Transfer of Ultra DMA data 5-96

5.6.4.1 Starting of Ultra DMA data In Burst 5-96

5.6.4.2 Ultra DMA data burst timing requirements 5-97

5.6.4.3 Sustained Ultra DMA data in burst 5-99

5.6.4.4 Host pausing an Ultra DMA data in burst 5-100

5.6.4.5 Device terminating an Ultra DMA data in burst 5-101

5.6.4.6 Host terminating an Ultra DMA data in burst 5-102

5.6.4.7 Initiating an Ultra DMA data out burst 5-103

5.6.4.8 Sustained Ultra DMA data out burst 5-104

5.6.4.9 Device pausing an Ultra DMA data out burst 5-105

5.6.4.10 Host terminating an Ultra DMA data out burst 5-106

5.6.4.11 Device terminating an Ultra DMA data in burst 5-107

5.6.5 Power-on and reset 5-108

x C141-E050-02EN

Contents

CHAPTER 6 Operations.................................................................................6-1

6.1 Device Response to the Reset 6-2

6.1.1 Response to power-on 6-2

6.1.2 Response to hardware reset 6-4

6.1.3 Response to software reset 6-5

6.1.4 Response to diagnostic command 6-6

6.2 Address Translation 6-7

6.2.1 Default parameters 6-7

6.2.2 Logical address 6-8

6.3 Power Save 6-9

6.3.1 Power save mode 6-9

6.3.2 Power commands 6-11

6.4 Defect Management 6-11

6.4.1 Spare area 6-12

6.4.2 Alternating defective sectors 6-12

6.5 Read-Ahead Cache 6-14

6.5.1 Data buffer configuration 6-14

6.5.2 Caching operation 6-14

6.5.3 Usage of read segment 6-16

6.5.3.1 Mis-hit (no hit) 6-16

6.5.3.2 Sequential read 6-17

6.5.3.3 Full hit (hit all) 6-20

6.5.3.4 Partially hit 6-21

6.6 Write Cache 6-22

Glossary .................................................................................................GL-1

Acronyms and Abbreviations ........................................................................AB-1

Index ................................................................................................ ...IN-1

C141-E050-02EN xi

Contents

Figures

Illustrations

Figure 1.1 Current fluctuation (Typ.) at +5V when power is turned on 1-6

Figure 2.1 Disk drives outerview (The MHC Series and MHD Series) 2-2
Figure 2.2 Configuration of disk media heads 2-3
Figure 2.3 1 drive system configuration 2-4
Figure 2.4 2 drives configuration 2-5

Figure 3.1 Dimensions (MHC/MHD series) 3-2
Figure 3.2 Orientation (Sample: MHC2040AT) 3-4
Figure 3.3 Mounting frame structure 3-5
Figure 3.4 Surface temperature measurement points (Sample: MHC2040AT)

3-6
Figure 3.5 Service area (Sample: MHC2040AT) 3-7
Figure 3.6 Connector locations (Sample: MHC2040AT) 3-8
Figure 3.7 Cable connections 3-9
Figure 3.8 Power supply connector pins (CN1) 3-10
Figure 3.9 Jumper location 3-10
Figure 3.10 Factory default setting 3-11
Figure 3.11 Jumper setting of master or slave device 3-11
Figure 3.12 CSEL setting 3-12
Figure 3.13 Example (1) of Cable Select 3-12
Figure 3.14 Example (2) of Cable Select 3-13

Figure 4.1 Head structure 4-3
Figure 4.2 Circuit Configuration 4-5
Figure 4.3 Power-on operation sequence 4-7
Figure 4.4 Read/write circuit block diagram 4-11
Figure 4.5 Frequency characteristic of programmable filter 4-12
Figure 4.6 Block diagram of servo control circuit 4-14
Figure 4.7 Physical sector servo configuration on disk surface 4-16
Figure 4.8 Servo frame format 4-18

Figure 5.1 Interface signals 5-2
Figure 5.2 Execution example of READ MULTIPLE command 5-20
Figure 5.3 Read Sector(s) command protocol 5-71
Figure 5.4 Protocol for command abort 5-72

xii C141-E050-02EN

Contents

Figure 5.5 WRITE SECTOR(S) command protocol 5-73
Figure 5.6 Protocol for the command execution without data transfer 5-

75
Figure 5.7 Normal DMA data transfer 5-76
Figure 5.8 An example of generation of parallel CRC 5-90
Figure 5.9 Ultra DMA termination with pull-up or pull-down 5-91
Figure 5.10 Data transfer timing 5-93
Figure 5.11 Single word DMA data transfer timing (mode 2) 5-94
Figure 5.12 Multiword DMA data transfer timing (mode 2) 5-95
Figure 5.13 Starting of Ultra DMA data In Burst transfer 5-96
Figure 5.14 Sustained Ultra DMA data in burst 5-99
Figure 5.15 Host pausing an Ultra DMA data in burst 5-100
Figure 5.16 Device terminating an Ultra DMA data in burst 5-101
Figure 5.17 Host terminating an Ultra DMA data in burst 5-102
Figure 5.18 Initiating an Ultra DMA data out burst 5-103
Figure 5.19 Sustained Ultra DMA data out burst 5-104
Figure 5.20 Device pausing an Ultra DMA data out burst 5-105
Figure 5.21 Host terminating an Ultra DMA data out burst 5-106
Figure 5.22 Device terminating an Ultra DMA data out burst 5-107
Figure 5.23 Power on Reset Timing 5-108

Tables

Figure 6.1 Response to power-on 6-3
Figure 6.2 Response to hardware reset 6-4
Figure 6.3 Response to software reset 6-5
Figure 6.4 Response to diagnostic command 6-6
Figure 6.5 Address translation (example in CHS mode) 6-8
Figure 6.6 Address translation (example in LBA mode) 6-9
Figure 6.7 Sector slip processing 6-12
Figure 6.8 Alternate cylinder assignment 6-13
Figure 6.9 Data buffer configuration 6-14

Table 1.1 Specifications (MHC2032AT/MHC2040AT) 1-4
Table 1.2 Specifications (MHD2021AT/MHD2032AT) 1-5
Table 1.3 Model names and product numbers 1-6
Table 1.4 Current and power dissipation 1-7
Table 1.5 Environmental specifications 1-8
Table 1.6 Acoustic noise specification 1-8
Table 1.7 Shock and vibration specification 1-9

C141-E050-02EN xiii

Contents

Table 3.1 Surface temperature measurement points and standard values

3-6

Table 3.2 Cable connector specifications 3-9

Table 4.1 Self-calibration execution timechart 4-9
Table 4.2 Write precompensation algorithm 4-10

Table 5.1 Signal assignment on the interface connector 5-3
Table 5.2 I/O registers 5-7
Table 5.3 Command code and parameters 5-14
Table 5.4 Information to be read by IDENTIFY DEVICE command 5-

32
Table 5.5 Features register values and settable modes 5-38
Table 5.6 Diagnostic code 5-43
Table 5.7 Features Register values (subcommands) and functions 5-54
Table 5.8 Format of device attribute value data 5-56
Table 5.9 Format of insurance failure threshold value data 5-57
Table 5.10 Contents of security password 5-61
Table 5.11 Contents of SECURITY SET PASSWORD data 5-65
Table 5.12 Relationship between combination of Identifier and Security

level, and operation of the lock function 5-66
Table 5.13 Command code and parameters 5-68
Table 5.14 Parallel generation equation of CRC polynomial 5-90
Table 5.15 Recommended series termination for Ultra DMA 5-91
Table 5.16 Ultra DMA data burst timing requirements 5-97

Table 6.1 Default parameters 6-7

xiv C141-E050-02EN

CHAPTER 1 Device Overview

1.1 Features

1.2 Device Specifications

1.3 Power Requirements

1.4 Environmental Specifications

1.5 Acoustic Noise

1.6 Shock and Vibration

1.7 Reliability

1.8 Error Rate

1.9 Media Defects

Overview and features are described in this chapter, and specifications and power
requirement are described.

The MHC Series and MHD Series
controllers. These disk drives use the AT-bus hard disk interface protocol and are
compact and reliable.

are 2.5-inch hard disk drives with built-in disk

C141-E050-02EN 1-1

Device Overview

1.1 Features

1.1.1 Functions and performance

The fillowing features of the MHC Series and MHD Series are described.

(1) Compact

The MHC2032AT and MHC2040AT have 2 or 3 disks of 65 mm (2.5 inches)
diameter, and its height is 12.5 mm (0.492 inch). The MHD2032AT and
MHD2021AT have 2 disks of 65 mm (2.5 inches) diameter, and its height is 9.5
mm (0.374 inch).

(2) Large capacity

The disk drive can record up to 1,083 MB (formatted) on one disk using the
(16/17) EPR4ML recording method and 12 recording zone technology. The MHC
Series and MHD Series
MHD2032AT), 4.09 GB (MHC2040AT) and 2.16 GB (MHD2021AT)
respectively.

have a formatted capacity of 3.25 GB (MHC2032AT,

(3) High-speed Transfer rate

The disk drives (the MHC Series and MHD Series) have an internal data rate up to

10.6 MB/s (MHC/D2032AT). The disk drive supports an external data rate up to

33.3 MB/s (U-DMA mode 2).

(4) Average positioning time

Use of a rotary voice coil motor in the head positioning mechanism greatly
increases the positioning speed. The average positioning time is 13 ms (at read).

1.1.2 Adaptability

(1) Power save mode

The power save mode feature for idle operation, stand by and sleep modes makes
The disk drives (the MHC Series and MHD Series) ideal for applications where
power consumption is a factor.

(2) Wide temperature range

The disk drives (the MHC Series and MHD Series) can be used over a wide
temperature range (5°C to 55°C).

(3) Low noise and vibration

In Ready status, the noise of the disk drives (the MHC Series and MHD Series) is
only about 30 dBA (measured at 1 m apart from the drive under the idle mode).

1-2 C141-E050-02EN

1.1.3 Interface

(1) Connection to interface

With the built-in ATA interface controller, the disk drives (the MHC Series and
MHD Series) can be connected to an ATA interface of a personal computer.

(2) 512-KB data buffer

The disk drives (the MHC Series and MHD Series) uses a 512-KB data buffer to
transfer data between the host and the disk media.

In combination with the read-ahead cache system described in item (3) and the
write cache described in item (7), the buffer contributes to efficient I/O
processing.

(3) Read-ahead cache system

After the execution of a disk read command, the disk drive automatically reads the
subsequent data block and writes it to the data buffer (read ahead operation). This
cache system enables fast data access. The next disk read command would
normally cause another disk access. But, if the read ahead data corresponds to the
data requested by the next read command, the data in the buffer can be transferred
instead.

1.1 Features

(4) Master/slave

The disk drives (the MHC Series and MHD Series) can be connected to ATA
interface as daisy chain configuration. Drive 0 is a master device, drive 1 is a
slave device.

(5) Error correction and retry by ECC

If a recoverable error occurs, the disk drives (the MHC Series and MHD Series)
themselves attempt error recovery. The ECC has improved buffer error correction
for correctable data errors.

(6) Self-diagnosis

The disk drives (the MHC Series and MHD Series) have a diagnostic function to
check operation of the controller and disk drives. Executing the diagnostic
command invokes self-diagnosis.

(7) Write cache

When the disk drives (the MHC Series and MHD Series) receive a write
command, the disk drives post the command completion at completion of
transferring data to the data buffer completion of writing to the disk media. This
feature reduces the access time at writing.

C141-E050-02EN 1-3

Device Overview

Format Capacity (*1)

3.25 GB

4.09 GB

Number of Heads

Number of Cylinders (User)

7,322

7,230

Bytes per Sector

Recording Method

(16/17) EPR4ML

Track Density

11,960 TPI

Bit Density

178,000 BPI

Rotational Speed

4,000 rpm ± 1%

Average Latency

7.5 ms

Positioning time (read and seek)

• Minimum (Track to Track)

• Average

• Maximum (Full)

2.5 ms (typ.)

Read: 13 ms (typ.)

23 ms (typ.)

Start/Stop time

• Start (0 rpm to Drive Read)

• Stop (at Power Down)

Typ.: 5 sec, Max.: 10 sec

Typ.: 5 sec, Max.: 15 sec

(when the command is stopped) (when the power is off)

Interface

ATA-3 (Max. Cable length: 0.46 m)

Data Transfer Rate

• To/From Media

6.3 to 10.6 MB/s

5.5 to 9.8 MB/s

• To/From Host

33.3 MB/s Max.

(U-DMA mode 2)

Data Buffer Size

512 KB

Physical Dimensions

(Height × Width × Depth)

12.5 mm × 100.0 mm × 70.0 mm

(0.49" × 3.94" × 2.75")

Weight

145 g

1.2 Device Specifications

1.2.1 Specifications summary

Table 1.1 shows the specfications of the disk drives (MHC2032AT/MHC2040AT).

Table 1.1 Specifications (MHC2032AT/MHC2040AT)

MHC2032AT MHC2040AT

4 6

512

1-4 C141-E050-02EN

1.2 Device Specifications

Format Capacity (*1)

2.16 GB

3.25 GB

Number of Heads

Number of Cylinders (User)

7,290

7,322

Bytes per Sector

Recording Method

(16/17) EPR4ML

Track Density

11,960 TPI

Bit Density

191 Kbpi

217 Kbpi

Rotational Speed

4,000 rpm ± 1%

Average Latency

7.5 ms

Positioning time (read and seek)

• Minimum (Track to Track)

• Average

• Maximum (Full)

2.5 ms (typ.)

Read: 13 ms (typ.)

23 ms (typ.)

Start/Stop time

• Start (0 rpm to Drive Read)

• Stop (at Power Down)

Typ.: 5 sec, Max.: 10 sec

Typ.: 5 sec, Max.: 15 sec

(when the command is stopped) (when the power is off)

Interface

ATA-3 (Max. Cable length: 0.46 m)

Data Transfer Rate

• To/From Media

5.9 to 10.0 MB/s

6.3 to 10.6 MB/s

• To/From Host

33.3 MB/s Max.

(U-DMA mode 2)

Data Buffer Size

512 KB

Physical Dimensions

(Height × Width × Depth)

9.5 mm × 100.0 mm × 70.0 mm

(0.37" × 3.94" × 2.75")

Weight

95 g

Table 1.2 shows the specfications of the disk drives (MHD2021AT/MHD2032AT).

Table 1.2 Specifications (MHD2021AT/MHD2032AT)

MHD2021AT MHD2032AT

3 4

512

*1: Capacity under the LBA mode.

Under the CHS mode (normal BIOS specification), formatted capacity,
number of cylinders, number of heads, and number of sectors are as
follows.

C141-E050-02EN 1-5

Device Overview

Formatted Capacity

No. of Cylinder

No. of Heads

No. of Sectors

3,253.46 MB

6,304

4,099.86 MB

7,944

2,167.60 MB

4,200

3,253.46 MB

6,304

Model Name

Capacity

(user area)

Mounting screw

Order No.

3.25 GB

M3, depth 3

CA01677-B040

4.09 GB

M3, depth 3

CA01677-B060

2.16 GB

M3, depth 3

CA01678-B030

3.25 GB

M3, depth 3

CA01678-B040

+5 V

Maximum

100 mV (peak to peak)

Frequency

DC to 1 MHz

Model

MHC2032AT
MHC2040AT
MHD2021AT
MHD2032AT

1.2.2 Model and product number

Table 1.3 lists the model names and product numbers of the MHC Series and
MHD Series.

Table 1.3 Model names and product numbers

MHC2032AT
MHC2040AT
MHD2021AT

16 63
16 63
16 63
16 63

MHD2032AT

1.3 Power Requirements

(1) Input Voltage

• + 5 V ± 5 %

(2) Ripple

1-6 C141-E050-02EN

(3) Current Requirements and Power Dissipation

Typical RMS Current

Typical Power (*3)

MHC Series

MHD Series

MHC Series

MHD Series

Spin up (*1)

0.9 A

0.9 A

4.5 W

4.5 W

Idle

190 mA

190 mA

0.95 W

0.95 W

R/W (*2)

420 mA

430 mA

2.1 W

2.15 W

Standby

70 mA

70 mA

0.35 W

0.35 W

Sleep

26 mA

26 mA

0.13 W

0.13 W

Energy

Consumption

Efficiency

0.0002 W/MB

0.0003 W/MB

Table 1.4 lists the current and power dissipation.

Table 1.4 Current and power dissipation

— —

1.3 Power Requirements

*1 Current at starting spindle motor.

*2 Power requirements reflect nominal values for +5V power.

*3 At 30% disk accessing.

(4) Current fluctuation (Typ.) at +5V when power is turned on

Figure 1.1 Current fluctuation (Typ.) at +5V when power is turned on

C141-E050-02EN 1-7

Device Overview

Temperature

• Operating

• Non-operating

• Thermal Gradient

5°C to 55°C (ambient)

5°C to 60°C (disk enclosure surface)

40°C to 65°C

20°C/h or less

Humidity

• Operating

• Non-operating

• Maximum Wet Bulb

8% to 90% RH (Non-condensing)

5% to 95% RH (Non-condensing)

Altitude (relative to sea level)

• Operating

• Non-operating

300 to 3,000 m

300 to 12,000 m

Sound Pressure

• Idle mode (DRIVE READY)

30 dBA typical at 1 m

(5) Power on/off sequence

The voltage detector circuits (the MHC Series and MHD Series) monitor +5 V.
The circuits do not allow a write signal if either voltage is abnormal. These
prevent data from being destroyed and eliminates the need to be concerned with
the power on/off sequence.

1.4 Environmental Specifications

Table 1.5 lists the environmental specifications.

Table 1.5 Environmental specifications

–

1.5 Acoustic Noise

Table 1.6 lists the acoustic noise specification.

Table 1.6 Acoustic noise specification

29°C

–
–

1-8 C141-E050-02EN

1.6 Shock and Vibration

Vibration (swept sine, one octave per minute)

• Operating

• Non-operating

5 to 500 Hz, 1.0G0-peak (MHC series)

5 to 400 Hz, 1.0G0-peak (MHD series)

(without non-recovered errors) (9.8 m/s

0-peak)

5 to 500 Hz, 5G0-peak (MHC series)

5 to 400 Hz, 5G0-peak (MHD series)

(no damage) (49 m/s

0-peak)

Shock (half-sine pulse, 2 ms duration)

• Operating

• Non-operating

100G0-peak

(without non-recovered errors) (980 m/s

0-peak)

500G0-peak (no damage) (4,900 m/s

0-peak)

Conditions of 300,000 h

Current time

250H/month or less 3000H/years

or less

Operating time

20% or less of current time

CSS operations

50/day or less

Total 50,000 or less

Power on/off

1/day or more needed.

Environment

5 to 55°C/8 to 90%

But humidity bulb temperature

29°C or less

Table 1.7 lists the shock and vibration specification.

Table 1.7 Shock and vibration specification

1.7 Reliability

2

2

2

2

1.7 Reliability

(1) Mean time between failures (MTBF)

MTBF is defined as follows:

Total operation time in all fields

MTBF= (H)

number of device failure in all fields

“Disk drive defects” refers to defects that involve repair, readjustment, or
replacement. Disk drive defects do not include failures caused by external factors,
such as damage caused by handling, inappropriate operating environments, defects
in the power supply host system, or interface cable.

(2) Mean time to repair (MTTR)

The mean time to repair (MTTR) is 30 minutes or less, if repaired by a specialist
maintenance staff member.

C141-E050-02EN 1-9

Device Overview

(3) Service life

In situations where management and handling are correct, the disk drive requires
no overhaul for five years when the DE surface temperature is less than 48°C.
When the DE surface temperature exceeds 48°C, the disk drives requires no
overhaul for five years or 20,000 hours of operation, whichever occurs first. Refer
to item (3) in Subsection 3.2 for the measurement point of the DE surface
temperature. Also the operating conditions except the environment temperature
are based on the MTBF conditions.

(4) Data assurance in the event of power failure

Except for the data block being written to, the data on the disk media is assured in
the event of any power supply abnormalities. This does not include power supply
abnormalities during disk media initialization (formatting) or processing of
defects (alternative block assignment).

1.8 Error Rate

Known defects, for which alternative blocks can be assigned, are not included in
the error rate count below. It is assumed that the data blocks to be accessed are
evenly distributed on the disk media.

(1) Unrecoverable read error

Read errors that cannot be recovered by maximum 252 times read retries without
user’s retry and ECC corrections shall occur no more than 10 times when reading
data of 10

14

recovery procedure, and include read retries accompanying head offset operations.

(2) Positioning error

Positioning (seek) errors that can be recovered by one retry shall occur no more
than 10 times in 10

1.9 Media Defects

Defective sectors are replaced with alternates when the disk (the MHC Series and
MHD Series) are formatted prior to shipment from the factory (low level format).
Thus, the hosts see a defect-free devices.

bits. Read retries are executed according to the disk drive’s error

7

seek operations.

Alternate sectors are automatically accessed by the disk drive. The user need not
be concerned with access to alternate sectors.

1-10 C141-E050-02EN

CHAPTER 2 Device Configuration

2.1 Device Configuration

2.2 System Configuration

This chapter describes the internal configurations of the hard disk drives and the
configuration of the systems in which they operate.

C141-E050-02EN 2-1