Seagate ST9120414AS, ST9160414ASG, ST9250424ASG, ST9320424ASG, ST9160414AS User Manual

Product Manual

Momentus® 7200 FDE.1 SATA

ST9320424AS	ST9320424ASG
ST9250424AS	ST9250424ASG
ST9160414AS	ST9160414ASG
ST9120414AS	ST9120414ASG
	ST980414ASG

100515958 Rev. A July 2008

©2008, Seagate Technology LLC All rights reserved. Publication number: 100515958, Rev. A

July 2008

Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Momentus, SeagateSeaBOARD, SeaFONE, SeaTDD, 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.

One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. Quantitative usage examples for various applications are for illustrative purposes. Actual quantities will vary based on various factors, including file size, file format, features and application software. Seagate reserves the right to change, without notice, product offerings or specifications.

Contents

1.0	Introduction. . . .		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
	1.1	System requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		1
	1.2	About Momentus 7200 FDE.1 SATA disc drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		2
		1.2.1	Drive state upon shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3

2.0	Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. 5
	2.1	Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 5
	2.2	Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		7
		2.2.1	LBA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
	2.3	Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		7
	2.4	Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	2.5	Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	2.6	Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	2.7	Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		9
	2.8	Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		9
	2.9	Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		10
		2.9.1	Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
		2.9.2	Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
		2.9.3	Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
		2.9.4	Power-management modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	2.10	Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		13
		2.10.1	Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
		2.10.2	Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
		2.10.3	Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
		2.10.4	Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
		2.10.5	Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
		2.10.6	Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
	2.11	Acoustics	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	2.12	Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		15
	2.13	Reliability	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
		2.13.1	Free Fall Protection feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
	2.14	Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17
		2.14.1	Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
		2.14.2	Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
		2.14.3	FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	2.15	Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		20
		2.15.1	European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . .	20
		2.15.2	China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . .	20
	2.16	Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		20

3.0	Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			21
	3.1	Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		21
	3.2	Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22
	3.3	Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		22
	3.4	Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		23
	3.5	Drive integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		24
		3.5.1	Drive installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25
		3.5.2	Consumer usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25
	3.6	Security Erase--ATA security commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		25
		3.6.1	Secure Erase procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25
		3.6.2	Drive State after Secure Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25

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4.0 Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.2 Serial ATA device plug connector pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.2.1 ATA Security policy exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.2.2 DriveTrust Mode support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 4.2.3 Full Disc Encryption support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2.4 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.2.5 Identify Device command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.2.6 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.2.7 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.0 Compatibility summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

5.1 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.2 System Compatibility using WIndows XP SP2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.2.1 BIOS versions tested in ATA Security mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 5.2.2 DriveTrust compatibility verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

5.3 Operating system versions tested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 5.4 Compatibility test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

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List of Figures

Figure 1. Typical +5V only startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 2. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 3. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 4. Mounting dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 5. Momentus 7200 FDE.1 SATA drive label example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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1.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus® 7200 FDE.1 SATA model drives:

ST9320424AS	ST9320424ASG (includes Free Fall Sensor)
ST9250424AS	ST9250424ASG (includes Free Fall Sensor)
ST9160414AS	ST9160414ASG (includes Free Fall Sensor)
ST9120414AS	ST9120414ASG (includes Free Fall Sensor)
	ST980414ASG (includes Free Fall Sensor)

These drives provide the following key features:

•DriveTrust technology including:

•Hardware-based Full Disc Encryption (FDE)

•DriveTrust security interface and ATA security interface

•Integrates with standard security software packages to provide features such as: Pre-boot authentication and initialization using the drive’s secure partition and DriveTrust API

•Encryption key escrow.

•7,200-RPM spindle speed

•16-Mbyte buffer.

•Free Fall Protection (on ST9320424ASG, ST9250424ASG, ST9160414ASG, ST9120414ASG and ST980414ASG models only)

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

•High instantaneous (burst) data transfer rates (up to 3 Gbits/sec).

•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.

•1,000 Gs nonoperating shock and 350 Gs operating shock.

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

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

•Support for Read Multiple and Write Multiple commands.

1.1System requirements

The following hardware and software is required to use these drives.

Host system requirements:

•Windows XP with Service Pack 2 (or later) when utilizing the Windows DriveTrust API.

•System/BIOS that supports ATA Security commands.

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1.2About Momentus 7200 FDE.1 SATA disc drives

Momentus® 7200 FDE.1 SATA drives contain DriveTrust technology providing Full Disc Encryption (FDE) using proven Advanced Encryption Standard (AES) data encryption and decryption.

You can elect to use Momentus 7200 FDE.1 SATA drives in one of two different security modes:

1.The ATA Security mode

To operate in ATA Security mode, you only need a host system and operating system that supports the existing ATA Security Command Set. The drive is shipped to operating in this mode, ready to use.

2.The DriveTrust Security mode

To enable a robust enterprise-level security and management policy, you may elect to operate in DriveTrust Security mode. To do so, you will need to use a third-party security application to manage the DriveTrust features. Please contact your system or software provider for more details.

Refer to the table below to determine which mode is best for your particular solution.

Table 1: Security feature matrix

			ATA Security mode	DriveTrust mode
	Non-FDE drive			FDE drive operating in
	without ATA Security	Non-FDE drive with	FDE drive with ATA	DriveTrust mode via
Feature	enabled	ATA Security enabled	Security enabled	third-party software
Password required to unlock	No	Yes	Yes	Yes
Full Disk Encryption	No	No	Yes	Yes
At speed encryption	No	No	Yes	Yes
Passwords stored securely	No	Yes	Yes	Yes
Quick erase	No	No	Yes	Yes
Preboot authentication	No	No	No	Yes
Master/User passwords	No	No	No	Yes

FDE drive feature list

•Automatically encrypts (and decrypts) all data on the drive

•Operations are performed with no measurable performance loss

•All user data is encrypted on write operations and decrypted on read operations

FDE benefits

•Drive-level protection of data

•Drives that are stolen, taken out of service, or re-purposed remain fully protected

•Near instantaneous disposal and re-purposing of the drive (ensures that data from previous user is not accessible by the new drive owner)

•Able to be deployed within a trusted computing environment

The drive encrypts every write operation and decrypts every read operation without user intervention. The encryption and decryption is done on the drive itself, so there is a near-zero performance impact when the drive writes and reads data. The performance-optimized encryption and decryption engine performs at the SATA interface speed.

The purpose of full disc encryption on the drive is to protect the data stored on the drive in the event that the host system is lost or stolen. This data at rest protection assures the system owner that if their system is lost or stolen, their data will not be accessible without the correct credentials.

Note. The system reauthenticates the user on powerup and when awakening from sleep mode. It is not necessary to power down to ensure that the system reauthenticates the user.

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Having the encryption/decryption on the drive also provides the highest level of security for data because all data, including the boot sector bytes, operating system, temp and even the swap files are encrypted at the drive level.

1.2.1Drive state upon shipment

Upon shipment from the Seagate factory, the ATA Security Interface is enabled and functioning. This is referred to as operating in ATA Security mode. The following is the detailed state of the drive upon shipment.

•Full Disc Encryption is active and functioning. All user data is encrypted on write and decrypted on read.

•The user interface to the drive is active and all read and write commands are allowed.

•The ATA user password is null (no value).

•The ATA master password is set to the Security ID (SID).

•ATA Security is set to the unlocked state. No password is required to access the drive.

Momentus 7200 FDE.1 SATA drives may be integrated into the computer system in the same way you would integrate a non-FDE Momentus drive.

The encryption key is enabled and operational when the drive leaves the Seagate factory. No user id is required to access the drive, so the data on the drive is accessible to anyone possessing the drive.

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2.0Drive specifications

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

2.1Specification 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 2:	Drive specifications
		ST9320424AS	ST9250424AS	ST9160414AS	ST9120414AS
Drive specification		ST9320424ASG	ST9250424ASG	ST9160414ASG	ST9120414ASG	ST980414ASG
Formatted Gbytes (512 bytes/sector)*		320	250	160	120	80
Guaranteed sectors		625,142,448	488,397,168	312,581,808	234,441,648	156,301,488
Bytes per sector		512
Physical read/write heads		4	3	2	2	1
Discs		2	2	1	1	1
Cache (Mbytes)		16
Recording density in BPI (bits/inch max)		1,334k
Track density TPI (tracks/inch max)		190k
Areal density (Gbits/inch2 max)		253
Spindle speed (RPM)		7.200
Internal transfer rate (Gbits/sec max)		1.1
I/O data transfer rate (Gbits/sec max)		3.0
ATA data-transfer modes supported		SATA 1.5/3.0, Serial ATA Revision 2.6
		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
Height (max)		9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
Width (max)		69.85 +/- .249 mm (2.75 +/- .0098 inches)
Length (max)		100.33 +/- 0.25 mm (3.95 +/- .010 inches)
Weight (typical)		110 grams (0.238 lb)		105 grams (0.227 lb)
Average latency (msec)		4.17
Power-on to ready (sec typical)		4.0
Standby to ready (sec typical)		3.0
Track-to-track seek time, read (msec typical)		1.0
Average seek, read (msec typical)		11.0
Average seek, write (msec typical)		13.0
Startup current, +5V (max)		1.0 amps
Seek power (typical)		2.3 watts

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Table 2:	Drive specifications
		ST9320424AS		ST9250424AS	ST9160414AS		ST9120414AS
Drive specification		ST9320424ASG		ST9250424ASG	ST9160414ASG		ST9120414ASG	ST980414ASG
Read power (typical)		2.1 watts
Write power (typical)		2.3 watts
Idle mode, low power (typical)		0.75 watts
Standby mode		0.21 watts (typical)***
Sleep mode		0.21 watts (typical)***
Voltage tolerance (including noise)		+5V ± 5%
Ambient temperature		0° to 60°C (operating), –40° to 70°C (nonoperating)
Temperature gradient (°C per hour max)		20°C (operating)
		35°C (nonoperating)
Relative humidity		5% to 90% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature (max)		30°C (operating)
		40°C (nonoperating)
Altitude, operating		–60.96 m to 3,048 m (–200 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		350
(Gs max at 2 msec)
Shock, nonoperating		800
(Gs max at 2 msec)
Shock, nonoperating		1,000
(Gs max at 1 msec)
Shock, nonoperating		600
(Gs max at 0.5 msec)
Vibration, operating		1.0 G (0 to peak, 5–500 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)		0.48%
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		5 years on distribution units.
		To determine the warranty for a specific drive, use a web browser to access the follow-
		ing web page:
		www.seagate.com/support/service/
		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 display the warranty information for your drive.
Supports Hotplug operation per Serial ATA		Yes (requires COMPRESET from host after a hotplug event)
Revision 2.5 specification

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

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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.

2.2Formatted capacity

Model	Formatted capacity*	Guaranteed sectors	Bytes per sector
ST9320424AS and ST9320424ASG	320 Gbytes	625,142,448	512
ST9250424AS and ST9250424ASG	250 Gbytes	488,397,168	512
ST9160414AS and ST9160414ASG	160 Gbytes	312,581,808	512
ST9120414AS and ST9120414ASG	120 Gbytes	234,441,648	512
ST980414ASG	80 Gbytes	156,301,488	512

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

2.2.1LBA 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 4.2.5, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes.

2.3Default 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.

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2.4Physical organization

Drive model	Read/write heads	Number of discs
ST9320424AS and ST9320424ASG	4	2
ST9250424AS and ST9250424ASG	3	2
ST9160414AS and ST9160414ASG	2	1
ST9120414AS and ST9120414ASG	2	1
ST980414ASG	1	1

2.5Recording and interface technology

Interface	Serial ATA (SATA)
Recording method	Perpendicular
Recording density BPI (bits/inch max)	1,334k
Track density TPI (tracks/inch max)	190k
Areal density (Gbits/inch2 max)	253
Spindle speed (RPM) (± 0.2%)	7,200
Maximum Internal transfer rate (Gbits/sec)	1.1
I/O data-transfer rate (Gbits/sec max)	3.0
Interleave	1:1
Cache buffer	16 Mbytes (16,384 kbytes)

2.6Physical characteristics

Drive specification
Height	(mm)	9.5 +/-0.2
	(inches)	0.374 +/-0.0078
Width	(mm)	69.85 +/-0.249
	(inches)	2.75 +/-0.0098
Length	(mm)	100.33 +/-0.25
	(inches)	3.95 +/-0.010
Typical weight
	ST9320424AS	110 grams
	ST9320424ASG	0.238 pounds
	ST9250424AS
	ST9250424ASG
	ST9160414AS	105 grams
	ST9160414ASG	0.227 pounds
	ST9120414AS
	ST9120414ASG
	ST980414ASG

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2.7Seek 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 5,000 measurements of seeks between random tracks, less overhead.

Typical seek times (msec)	Read
Track-to-track	1.5
Average	11.0
Full-stroke	22.0
Average latency	4.17

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.

2.8Start/stop times

Time to ready	Typical	Max @ 25°C
Power-on to Ready (sec)	4.0	8.0
Standby to Ready (sec)	3.0	8.0

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2.9Power specifications

The drive receives DC power (+5V) through a native SATA power connector.

2.9.1Power consumption

Power requirements for the drives are listed in table 3. Typical power measurements are based on an average of drives tested, under nominal conditions, at 25°C ambient temperature.

•Spinup power

Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.

•Seek mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power is measured based on three random seek operations every 100 msecs. This mode is not typical.

•Read/write power and current

Read/write power is measured with the heads on track, based on three 63 sector read or write operations every 100 msecs.

•Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

•Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down model

Table 3:	DC power
Power dissipation		+5V input average (25° C)
Spinup (max)		1.0 amps
Seek		2.3 watts
Read		2.1 watts
Write		2.3 watts
Idle, performance*		1.4 watts
Idle, active*		1.0 watts
Idle, low power mode*		0.75 watts
Standby		0.21 watts
Sleep		0.21 watts

*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.

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2.9.1.1Typical current profile

Figure 1. Typical +5V only startup and operation current profile

2.9.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on the +5 volt line.

Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.9.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

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2.9.4Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-management modes:

Table 4:	Power management modes
Power modes		Heads		Spindle	Buffer
Active (operating)		Tracking		Rotating	Full power
Idle, performance		Tracking		Rotating	Self refresh—low power
Idle, active		Floating		Rotating	Self refresh—low power
Idle, low power		Parked		Rotating	Self refresh—low power
Standby		Parked		Stopped	Self refresh—low power
Sleep		Parked		Stopped	Self refresh—low power

•Active mode

The drive is in Active mode during the read/write and seek operations.

•Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a specifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive accepts all commands and returns to Active mode any time disc access is necessary.

•Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is in Self Refresh Low Power mode, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

•Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

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2.10Environmental specifications

2.10.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions.

Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.

Operating	0° to 60°C (32° to 140°F)
Nonoperating	–40° to 70°C (–40° to 158°F)

2.10.2Temperature gradient

Operating	20°C per hour (68°F per hour max), without condensation
Nonoperating	35°C per hour (95°F per hour max), without condensation

2.10.3Humidity

2.10.3.1Relative humidity

Operating	5% to 95% noncondensing (30% per hour max)
Nonoperating	5% to 95% noncondensing (30% per hour max)

2.10.3.2Wet bulb temperature

Operating	37.7°C (99.8°F max)
Nonoperating	40°C (104°F max)

2.10.4Altitude

Operating	–60.96 m to 3,048 m (–200 ft to 10,000+ ft)
Nonoperating	–304.8 m to 12,192 m (–1,000 ft to 40,000+ ft)

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2.10.5Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied in the X, Y or Z axis.

Note. Additional shock protection is provided by the Free Fall Protection feature on ST9320424ASG, ST9250424ASG, ST9160414ASG, ST9120414ASG, and ST980414ASG models. See Section

2.13.1for additional information about this feature.

2.10.5.1Operating shock

These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 350 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second.

2.10.5.2Nonoperating shock

The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 800 Gs based on a nonrepetitive half-sine shock pulse of 2 msec duration.

The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 1,000 Gs based on a nonrepetitive half-sine shock pulse of 1 msec duration.

The nonoperating shock level that the drive can experience without incurring physical damage or degradation in performance when subsequently put into operation is 600 Gs based on a nonrepetitive half-sine shock pulse of 0.5 msec duration.

2.10.6Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may be applied in the X, Y or Z axis.

2.10.6.1Operating vibration

The maximum vibration levels that the drive may experience while meeting the performance standards specified in this document are specified below.

5–500 Hz	1.0 Gs (0 to peak). Max displacement may apply below 10 Hz.

2.10.6.2Nonoperating vibration

The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation are specified below.

5–500 Hz	5.0 Gs (0 to peak). Max displacement may apply below 22 Hz.

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