Seagate ST9500423ASG, ST9500428AS, ST9640422AS, ST9640423AS, ST9640423ASG User Manual

Product Manual

Momentus®

7200-RPM

5400-RPM

Standard models	Free-fall sensor models
ST9750423AS	ST9750423ASG
ST9750422AS	ST9750420ASG
ST9750420AS	ST9640423ASG
ST9750424AS *	ST9500423ASG
ST9640424AS
ST9640423AS
ST9640422AS *
ST9500424AS
ST9500423AS
ST9500428AS *

100627937

Rev. C

January 2011

* specifications for these models are available from Seagate technical support www.seagate.com/www/en-us/about/contact_us/

		Revision history
Revision	Date	Sheets affected or comments
Rev. A	09/15/10	Initial release.
Rev. B	10/25/10	fc, 2, 4-9, 13-14, 16 & 26-28.
Rev. C	01/28/11	Add Models to cover - ST9750424AS, ST9640422AS, ST9500428AS

© 2011 Seagate Technology LLC. All rights reserved. Publication number: 100627937, Rev. C, January 2011

Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Momentus and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners.

No part of this publication may be reproduced in any form without written permission of Seagate Technology LLC. Call 877-PUB-TEK1(877-782-8351) to request permission.

One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your computer's operating system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. Seagate reserves the right to change, without notice, product offerings or specifications.

Contents

1.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.1 Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2.1 LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.8 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.9.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.9.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.9.4 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.10 Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.3 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.4 Wet bulb temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.5 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.10.6 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.10.7 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.11 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.13.1 Free Fall Protection feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.15.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 18 3.15.2 China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . . 18

3.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.3.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Momentus Product Manual, Rev. C

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ii	Momentus Product Manual, Rev. C

List of Figures

Figure 1. Typical +5V only startup and operation current profile (7200-RPM models) . . . . . . . . . . . . . 10 Figure 2. Typical +5V only startup and operation current profile (5400-RPM models) . . . . . . . . . . . . . 10 Figure 3. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 5. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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1.0Seagate Technology support services

SEAGATE ONLINE SUPPORT and SERVICES

For information regarding products and services, visit http://www.seagate.com/www/en-us/about/contact_us/ Available services include:

Presales & Technical support

Global Support Services telephone numbers & business hours

Authorized Service Centers

For information regarding Warranty Support, visit http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance

For information regarding Data Recovery Services, visit http://www.i365.com

For Seagate OEM & Distribution partner portal, visit https://direct.seagate.com/portal/system For Seagate reseller portal, visit http://spp.seagate.com

Momentus Product Manual, Rev. C

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2.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus® model drives:

Standard models	Free Fall Protection models
ST9750423AS	ST9750423ASG
ST9750422AS
ST9750420AS	ST9750420ASG
ST9640424AS
ST9640423AS	ST9640423ASG
ST9500424AS
ST9500423AS	ST9500423ASG

These drives provide the following key features:

•5400-RPM spindle speed (on ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS & ST9640423ASG models only)

•7200-RPM spindle speed on all other models.

•16MB buffer.

•Free Fall Protection (on ST9750423ASG, ST9750420ASG, ST9640423ASG and ST9500423ASG models only)

•Quiet operation. Fluid Dynamic Bearing (FDB) motor.

•High instantaneous (burst) data-transfer rates (up to 3Gb/s).

•Perpendicular recording technology.

•State-of-the-art cache and on-the-fly error-correction algorithms.

•Native Command Queuing (NCQ) with command ordering.

•Full-track multiple-sector transfer capability without local processor intervention.

•1000 Gs nonoperating shock and 350 Gs of operating shock.

•SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.

•The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense, offers the industry’s most comprehensive protection for disc drives.

•Support for S.M.A.R.T. drive monitoring and reporting.

•Support for Read Multiple and Write Multiple commands.

•Worldwide Name (WWN) capability uniquely identifies the drive.

2	Momentus Product Manual, Rev. C

2.1About the Serial ATA interface

The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include:

•Easy installation and configuration with true plug-and-play connectivity. It is not normally necessary to set any jumpers or other configuration options.

•Thinner and more flexible cabling for improved enclosure airflow and ease of installation.

•Scalability to higher performance levels.

In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current system and expect all of your existing applications to work as normal.

The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0 (master) devices.

Note. The host adapter may, optionally, emulate a master/slave environment to host software where two devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA environment.

The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward compatibility with existing host systems and software. The Command and Control Block registers, PIO and DMA data transfers, resets, and interrupts are all emulated.

The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized AT Attachment” specification. The specification can be downloaded from http://www.serialata.org.

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3.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power.

3.1Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.

Table 1: Drive specifications for 750, 640 and 500 GB models

		ST9640424AS	ST9750422AS	ST9500424AS
	ST9750423AS	ST9640423AS	ST9750420AS	ST9500423AS
Drive specification	ST9750423ASG	ST9640423ASG	ST9750420ASG	ST9500423ASG
Formatted GB	750	640	750	500
Guaranteed sectors	1,465,149,168	1,250,263,728	1,465,149,168	976,773,168
Bytes per sector (logical/physical)	512/4K
Physical read/write heads	4			4/3
Discs	2
Cache (MB)	16
Recording density in BPI (max)	1,586k
Track density TPI (tracks/inch max)	341k
Areal density (Gb/in2 max)	541
Spindle speed (RPM)	5400		7200
Average latency (ms)	5.6		4.2
Internal transfer rate (Gb/s max)	1130	950	1305	1305
I/O data transfer rate (Gb/s max)	3.0
ATA data-transfer modes supported	SATA 1.0, Serial ATA Revision 2.6
	PIO modes 0–4
	Multiword DMA modes 0–2
	Ultra DMA modes 0–6
Height	9.5 +/- 0.2 mm (0.370 +/-.008 in)
Width	69.85 +/- 0.25 mm (2.750 +/- 0.010 in)
Length	100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)
Weight	115 g (0.254 lb)
Power-on to ready (sec typical)	3.6		4.0
Standby to ready (sec typical)	2.5		3.0
Track-to-track seek time, read (ms typ)	1.5
Average seek, read (ms typical)	11.0
Average seek, write (ms typical)	13.0
Startup current, +5V (max)	1.0A
Seek power (typical)	1.9W		2.5W
Read power (typical)	1.6W		2.1W

4	Momentus Product Manual, Rev. C

Table 1:	Drive specifications for 750, 640 and 500 GB models
			ST9640424AS	ST9750422AS	ST9500424AS
		ST9750423AS	ST9640423AS	ST9750420AS	ST9500423AS
Drive specification		ST9750423ASG	ST9640423ASG	ST9750420ASG	ST9500423ASG
Write power (typical)		1.85W		2.4W
Idle mode, low power (typical)		0.55W		0.70W
Standby mode (typical)		0.15W ***
Sleep mode (typical)		0.15W ***
Voltage tolerance (including noise)		+5V ± 5%
Ambient temperature		0°C to 60°C (operating)
		–40°C to 70°C (nonoperating)
Temperature gradient (°C/hour max)		20°C (operating), 35°C (nonoperating)
Relative humidity		5% to 95% (operating and nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature (°C max)		37.7 °C (operating), 40 °C (nonoperating)
Altitude, operating		–304.8 m to 3,048 m (–1,000 ft to 10,000+ ft)
Altitude, nonoperating		–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)
(meters below mean sea level, max)
Shock, operating (Gs max at 2 ms)		350
Shock, nonoperating (Gs max at 2 ms)		800
Shock, nonoperating (Gs max at 1 msec)		1000
Shock, nonoperating (Gs max at 0.5 ms)		1000
Vibration, operating		2.0 G (0 to peak, 5–200 Hz)
		1.0 G (0 to peak, 200–500 Hz)
Vibration, nonoperating		5 Gs (0 to peak, 5–500 Hz)
Drive acoustics, sound power (bels)
Idle**		2.3 (typical)
		2.5 (max)
Performance seek		2.6 (typical)
		2.7 (max)
Nonrecoverable read errors		1 per 1014 bits read
Annualized Failure Rate (AFR)		0.5%
Load/Unload (U/UL) cycles
25°C, 50% relative humidity		600,000 software-controlled power on/off cycles
		50,000 hard power on/off cycles
32°C, 80% relative humidity		600,000 software-controlled power on/off cycles
5°C, 80% relative humidity		50,000 hard power on/off cycles
5°C, 10% relative humidity
55°C, 16% relative humidity
Warranty		To determine the warranty for a specific drive, use a web browser to access the following
		web page: http://www.seagate.com/www/en-us/support/warranty_&_returns_assistance
		From this page, click on the “Verify Your Warranty” link. You will be asked to provide the drive
		serial number, model number (or part number) and country of purchase. The system will dis-
		play the warranty information for your drive.
Supports Hotplug operation per		Yes (requires COMRESET from host after a hotplug event)
Serial ATA Revision 2.6 specification

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

***Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby modes will not contribute to battery power consumption.

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3.2Formatted capacity

	Model	Formatted capacity*	Guaranteed sectors	Bytes per sector
				(logical)
	ST9750423AS, ST9750423ASG,	750GB	1,465,149,168
	ST9750422AS, ST9750420AS and
	ST9750420ASG
	ST9640424AS, ST9640423AS and	640GB	1,250,263,728	512
	ST9640423ASG
	ST9500424AS, ST9500423AS and	500GB	976,773,168
	ST9500423ASG

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

3.2.1LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above.

See Section 5.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137GB.

3.3Default logical geometry

Cylinders	Read/write heads	Sectors per track
16,383	16	63

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above.

3.4	Physical organization
Drive model		Read/write heads	Number of discs
ST9750423AS, ST9750423ASG, ST9750422AS,
ST9750420AS and ST9750420ASG		4
			2
ST9640424AS, ST9640423AS and ST9640423ASG
ST9500424AS, ST9500423AS and ST9500423ASG		4/3

6	Momentus Product Manual, Rev. C

	3.5	Recording and interface technology
	Interface		Serial ATA (SATA)
	Recording method		Perpendicular
	Recording density BPI (bits/in max)		1,586k
	Track density TPI (tracks/in max)		341k
	Areal density (Gb/in2 max)		541
	Spindle speed (RPM) (± 0.2%)		5400
	(ST9750423AS, ST9750423ASG, ST9640424AS, ST9640423AS
	and ST9640423ASG models only)
	Spindle speed (RPM) (± 0.2%) (all other models)		7200
	Maximum Internal transfer rate (Gb/s)		1130
	(ST9750423AS and ST9750423ASG models)
	Maximum Internal transfer rate (Gb/s)		1305
	(ST9750422AS, ST9750420AS, ST9750420ASG, ST9500424AS,
	ST9500423AS and ST9500423ASG models)
	Maximum Internal transfer rate (Gb/s)		950
	(ST9640424AS, ST9640423AS and ST9640423ASG models)
	I/O data-transfer rate (Gb/s max)		3.0
	Interleave		1:1
	Cache buffer		16MB (16,384KB)

3.6Physical characteristics

Drive specification
Height	(mm)	9.5 +/-0.2
	(in)	0.370	+/-0.008
Width	(mm)	69.85	+/-0.25
	(in)	2.750	+/-0.010
Length	(mm)	100.35 +0.20 / -0.25
	(in)	3.951	+0.008 / -.010
Typical weight		115 g
all models
		0.254 lb

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3.7Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:

•Track-to-track seek time is an average of all possible single-track seeks in both directions.

•Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks, less overhead.

Table 2:	Typical seek times
Typical seek times (ms)		Read
Track-to-track		1.5
Average		11.0
Full-stroke (ST9750423AS, ST9750423ASG, ST9640424AS,		27.0
ST9640423AS and ST9640423ASG models only)
Full-stroke (all other models)		22.0
Average latency (ST9750423AS, ST9750423ASG, ST9640424AS,		5.6
ST9640423AS and ST9640423ASG models only)
Average latency (all other models)		4.2

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications.

3.8Start/stop times

	ST9750423AS, ST9750423ASG,		ST9750422AS, ST9750420AS,
	ST9640424AS, ST9640423AS		ST9750420ASG, ST9500424AS,
	and ST9640423ASG,		ST9500423AS and ST9500423ASG
Time to ready	Typical	Max @ 25°C	Typical	Max @ 25°C
Power-on to Ready (sec)	3.6	5.1	4.0	5.5
Standby to Ready (sec)	2.5	4.0	3.0	4.5

8	Momentus Product Manual, Rev. C