Seagate ST160LT011 - 9ZVG4D, ST160LT007 - 9ZV14D, ST160LT009 - 9WC14D, ST160LT014 - 9YK14D, ST250LT007 - 9ZV14C User Manual

Product Manual

Momentus® Thin

7200-RPM

ST model # - Part #

Standard models ST320LT007 - 9ZV142 ST250LT007 - 9ZV14C ST160LT007 - 9ZV14D

Free-Fall Sensor models ST320LT011 - 9ZVG42 ST250LT011 - 9ZVG4C ST160LT011 - 9ZVG4D

ST model # - Part #

SED model ST320LT014 - 9YK142 ST250LT014 - 9YK14C ST160LT014 - 9YK14D

SED (FIPS 140-2) models ST320LT009 - 9WC142 ST250LT009 - 9WC14C ST160LT009 - 9WC14D

Gen-2 100625253 Rev. C January 2011

		Revision history
Revision	Date	Sheets affected or comments
Rev. A	06/02/10	Initial release.
Rev. B	06/24/10	fc, 2, 4, 6, 21 & 26-28.
Rev. C	01/04/11	5, 8, 15 & 20.

© 2011 Seagate Technology LLC. All rights reserved. Publication number: 100625253, 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. The FIPS logo is a certification mark of NIST, which does not imply product endorsement by NIST, the U.S., or Canadian governments. 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		7
3.8	Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
3.9	Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
	3.9.1	Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
	3.9.2	Deferred spinup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	3.9.3	Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	3.9.4	Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	3.9.5	Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
3.10	Environmental specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		12
	3.10.1	Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	3.10.2	Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	3.10.3	Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	3.10.4	Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	3.10.5	Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
	3.10.6	Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
3.11	Acoustics	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
3.12	Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		14
3.13	Reliability	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
3.14	Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		15
	3.14.1	Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	3.14.2	Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	3.14.3	FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
3.15	Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17
	3.15.1	European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . .	17
	3.15.2	China Restriction of Hazardous Substances (RoHS) Directive . . . . . . . . . . . . .	17
3.16	Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		17

4.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.0 About FIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 6.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.3.3 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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ii	Momentus Thin Product Manual, Rev. C Gen-2

List of Figures

Figure 1. Typical +5V only startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 2. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 3. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 4. Mounting dimensions (for FIPS 140-2 models) — top, side and end view . . . . . . . . . . . . . . . 20 Figure 5. Mounting dimensions (for standard models) — top, side and end view . . . . . . . . . . . . . . . . . 21 Figure 6. Example of FIPS tamper evidence labels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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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

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2.0Introduction

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

ST model #	Part #	ST model #	Part #	ST model #	Part #	ST model #	Part #
Standard models		Standard SED models		SED (FIPS 140-2) models		Free-Fall Sensor models
ST320LT007	9ZV142	ST320LT014	9YK142	ST320LT009	9WC142	ST320LT011	9ZVG42
ST250LT007	9ZV14C	ST250LT014	9YK14C	ST250LT009	9WC14C	ST250LT011	9ZVG4C
ST160LT007	9ZV14D	ST160LT014	9YK14D	ST160LT009	9WC14D	ST160LT011	9ZVG4D

Note. Previous generations of Seagate Self-Encrypting Drive models were called Full Disk Encryption (FDE) models before a differentiation between drive-based encryption and other forms of encryption was necessary.

Note. The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of Data at Rest” based on the standards defined by the Trusted Computing Group (see www.trustedcomputinggroup.org).

For more information on FIPS 140-2 Level 2 certification See Section 5.0 on page 22 .

These drives provide the following key features:

•7200-RPM spindle speed.

•16-MB buffer.

•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 disk drives.

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

•Support for Read Multiple and Write Multiple commands.

2	Momentus Thin Product Manual, Rev. C Gen-2

Momentus Thin Self-Encrypting Drive models have the following additional features:

•Automatic data encryption/decryption

•Controlled access

•Random number generator

•Drive locking

•16 independent data bands

•Cryptographic erase of user data for a drive that will be repurposed or scrapped

•Authenticated firmware download

There is no significant performance difference between Self-Encrypting Drive and standard (non-Self-Encrypt- ing Drive) models.

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 disk drive in your current system and expect all of your existing applications to work as normal.

The Serial ATA interface connects each disk 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. For convenience, the phrases the drive and this drive are used throughout this manual to indicate all models.

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
		ST320LT007 - 9ZV142	ST250LT007 - 9ZV14C	ST160LT007 - 9ZV14D
		ST320LT009 - 9WC142	ST250LT009 - 9WC14C	ST160LT009 - 9WC14D
Drive specification		ST320LT011 - 9ZVG42	ST250LT011 - 9ZVG4C	ST160LT011 - 9ZVG4D
		ST320LT014 - 9YK142	ST250LT014 - 9YK14C	ST160LT014 - 9YK14D
Formatted capacity (GB)*		320	250	160
Guaranteed logical blocks (LBA)		625,142,448	488,397,168	312,581,808
Bytes per physical sector		4096
Physical read/write heads		2		1
Disks		1
Cache (MB)		16
Recording density in BPI (bits/in avg)		1397k
Track density TPI (tracks/in avg)		315k
Areal density (Gb/in2 avg)		425
Spindle speed (RPM)		7200
Average latency (ms)		4.17
Internal transfer rate (Mb/s max)		1247
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 (max)		7.0 mm (0.276 in)
Width (max)		70.10 mm (2.76 in)
Length (max)		100.55 mm (3.959 in)
Weight (max)		<92.0 g (<0.203 lb)
Power-on to ready (sec typical)		3.5
Standby to ready (sec typical)		3.0
Track-to-track seek time, read (ms typical)		1.5
Average seek, read (ms typical)		11
Startup current, +5V (max)		1.0A

4	Momentus Thin Product Manual, Rev. C Gen-2

Table 1:	Drive specifications
		ST320LT007 - 9ZV142	ST250LT007 - 9ZV14C	ST160LT007 - 9ZV14D
		ST320LT009 - 9WC142	ST250LT009 - 9WC14C	ST160LT009 - 9WC14D
Drive specification		ST320LT011 - 9ZVG42	ST250LT011 - 9ZVG4C	ST160LT011 - 9ZVG4D
		ST320LT014 - 9YK142	ST250LT014 - 9YK14C	ST160LT014 - 9YK14D
Read/write power (typical)		Read: 1.6W; Write: 1.9W
Idle mode, low power (typical)		0.66W
Standby/Sleep mode (typical)		0.15W ***
Voltage tolerance (including noise)		+5V ± 10%
Ambient temperature		0° to 60°C (operating), –40° to 70°C (nonoperating)
Temperature gradient		20°C (operating)
(°C per hour max)		35°C (nonoperating)
Relative humidity		5% to 95% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature		37.7 (operating)
(°C max)		40 (nonoperating)
Altitude, operating		–304.8 m to 3,048 m (–1000 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 2ms)		350
Shock, nonoperating (Gs max at 2ms)		800
Shock, nonoperating (Gs max at 1ms)		1000
Shock, nonoperating (Gs max at 0.5ms)		600
Vibration, operating (Swept Sine)		1.0 Gs (0 to peak, 5–500 Hz)
Vibration, nonoperating		5.0 Gs (0 to peak, 5–500 Hz)
Drive acoustics, sound power (bels)
Idle**		2.3 (typical)
		2.5 (max)
Seek		2.5 (typical)
		2.7 (max)
Nonrecoverable read errors		1 per 1014 bits read
Annualized Failure Rate (AFR)		0.50%
Load/Unload (U/UL) cycles
25°C, 50% relative humidity		600,000 software-controlled power on/off cycles
		20,000 hard power on/off cycles
32°C, 80% relative humidity		600,000 software-controlled power on/off cycles
5°C, 80% relative humidity		20,000 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
		You will be asked to provide the drive serial number, model number (or part number)
		and country of purchase. After submitting this information, the system will display the
		warranty information for your drive.
Supports Hotplug operation per Serial ATA		Yes (requires COMRESET from host after a hotplug event)
Revision 2.6 specification

*One GB 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

	Formatted capacity*	Guaranteed logical blocks (LBA) - 512 emulation	Bytes per physical sector
	ST320LT007 - 9ZV142
	ST320LT009 - 9WC142	625,142,448
	ST320LT011 - 9ZVG42
	ST320LT014 - 9YK142
	ST250LT007 - 9ZV14C
	ST250LT009 - 9WC14C	488,397,168	4096
	ST250LT011 - 9ZVG4C
	ST250LT014 - 9YK14C
	ST160LT007 - 9ZV14D
	ST160LT009 - 9WC14D	312,581,808
	ST160LT011 - 9ZVG4D
	ST160LT014 - 9YK14D

*One GB 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 logical blocks (LBA) as defined above.

See Section 6.3.1, "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 logical blocks (LBA) as defined above.

3.4Physical organization

	Models	Read/write heads	Number of disks
	320GB models	2
	250GB models		1
	160GB models	1

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3.5Recording and interface technology

	4K sector models
Interface	Serial ATA (SATA)
Recording method	Perpendicular
Recording density BPI (bits/in avg)	1397k
Track density TPI (tracks/in avg)	315k
Areal density (Gb/in2 avg)	425
Spindle speed (RPM) (± 0.2%)	7200
Maximum Internal transfer rate (Mb/s)	1247
I/O data-transfer rate (Gb/s max)	3.0
Interleave	1:1
Cache buffer	16 MB (16,384 KB)

3.6Physical characteristics

Drive specification
Height	(mm)	6.8 +/-0.2
	(in)	0.268	+/-0.0079
Width	(mm)	69.85	+/-0.25
	(in)	2.75 +/-0.0098
Length	(mm)	100.35 +0.20/-0.25
	(in)	3.951	+0.008/-0.010
Weight (max)
All models		92.0 g
		0.203 lb

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
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.

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3.8Start/stop times

Time to ready	Typical	Max @ 25°C
Power-on to Ready (sec)	3.5	4.0
Standby to Ready (sec)	3.0	3.0

3.9Power specifications

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

3.9.1Power consumption

Power requirements for the drives are listed in the table on page 8. Typical power measurements are based on an average of drives tested, under nominal conditions, at 25°C ambient temperature. These power measurements are done with Interface Power Management modes like HIPM and DIPM enabled.

•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 disk 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 100ms. 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 100ms.

•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)		1.00A
Seek		1.6W
Read		1.6W
Write		1.9W
Idle, performance*		1.3W
Idle, active*		0.90W
Idle, low power mode*		0.66W
Standby**		0.15W
Sleep		0.15W

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

8	Momentus Thin Product Manual, Rev. C Gen-2