Seagate ST980821A, ST9100826A, ST940811A, ST9120826A, ST960814A User Manual

Product Manual

Momentus®5400 FDE

ST9120826A ST9100826A ST980821A ST960814A ST940811A

100377037 Rev . C August 2007

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 Te chnolog y LLC or one of it s af filiate d comp a nies in the United States a nd/ 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 p urpo ses. Actual quan tities w ill vary based on vari ou s factors, including fi le size, file format, features and application software. Seagate reserves the right to change, without notice, product offerings or specifications.

Momentus 5400 FDE Product Manual, Rev. C

Contents

1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 System requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 About Momentus 5400 FDE disc drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 Drive state upon shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.8 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.11 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.1 Handling and static discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.2 Jumper settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.1 Master/slave configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.3 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3.4 Drive integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.4.1 Drive installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.4.2 Consumer usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5 Security Erase--ATA security commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.1 Security Thaw command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.2 Security Erase procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.5.3 Drive State after security erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Momentus 5400 FDE Product Manual, Rev. C

4.0 ATA interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.1 ATA interface signals and connector pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

4.1.1 ATA interface specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.1.2 ATA Security policy exceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.1.3 Additional technical notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

4.1.4 Drive Trust Mode supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.1.5 Full Disc Encryption support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4.1.6 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4.1.7 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.1.8 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5.0 Compatibility summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.1 Installation considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.2 BIOS versions tested. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.3 Operating system versions tested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.4 Compatibility test configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.5 Software utilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

5.5.1 Third party software support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Momentus 5400 FDE Product Manual, Rev. C

iii

List of Figures

Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 2. Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 3. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 4. Momentus 5400 FDE drive label example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Momentus 5400 FDE Product Manual, Rev. C

1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate Momentus®5400 FDE drives:

• ST9120826A

• ST9100826A

• ST980821A

• ST960814A

• ST940811A These drives provide the following key features:

• Trusted Drive technology including:

• Hardware Full Disc Encryption (FDE)

• Drive Trust security interface and ATA security interface

• Pre-boot authentication and initialization using the drive’s secure partition and Drive Trust API

• Encryption key escrow. Consult with your ISV.

• 5,400-RPM spindle speed and 8-Mbyte buffer combine for superior performance.

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

• High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5.

• Tunneling Magnetoresistive (TMR) recording heads.

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

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

• 800 Gs nonoperating shock and 250 Gs operating shock.

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

• The 3D Defense S ystem ™, which i nclude s Drive D efen se, Dat a Defe nse, and Diagnostic Defense , of fers 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.

• Support for autodetection of master/slave drives that use cable select (CSEL).

1.1 System 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 Drive Trust API.

• System/BIOS that supports ATA Security commands.

Momentus 5400 FDE Product Manual, Rev. C

1.2 About Momentus 5400 FD E disc drives

The Momentus 5400 FDE contains drive trust technology providing Full-Disc Encryption (FDE) using proven Triple DES (TDES) data encryption and decryption.

Feature list

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

• Operations are performed with no measured performance loss

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

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 re ads dat a. T he pe rfor mance -opt i mized en crypti on and de cryption engine performs at the ATA interface speed.

The purpose of full-disc encryption is to protect the dat a store d on the drive in the even t that the host system is lost or stolen. This assures the system owner that if their system is lost or stolen, their data will not be accessible without the correct credentials.

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.

The Momentus 5400 FDE contains two security interfaces:

1. The ATA Security Interface

This interface is provided for compatibility with the existing ATA Security Command Set. The ATA Security Interface is active upon shipment and ready for use.

2. The Drive Trust Security Interface

This interface is provided to enable a robust enterprise-level security and management policy. Use of the Drive Tr ust S ecuri ty Inte rface req uires additi on al sof twar e to mana ge t he D rive Trust interface . Please co ntact your system or software provider for more details.

1.2.1 Drive state upon shipment

Upon shipment from the Seagate factory, the ATA Security Interface is enabled and functioning. The following is the detailed state of the drive upon shipment.

• Full Disc Encryption (FDE) 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 5400 FDE Product Manual, Rev. C

The Momentus 5400 FDE drive 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. The drive will encrypt data without a user id.

Momentus 5400 FDE Product Manual, Rev. C

2.0 Drive 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 ST9120826A, ST9100826A , ST980821 A, ST9608 14A, and ST940811A mod el drive s.

2.1 Specification summary

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

T a ble 1: S pecifications

Drive specification ST9120826A ST9100826A ST980821A ST960814A ST940811A

Formatted Gbytes (512 bytes/sector)* 120 100 80 60 40 Guaranteed sectors 234,441,648 195,371,568 156,301,488 117,210,240 78,140,160 Bytes per sector 512 Physical read/write heads 4 4 3 2 2 Discs 2 2 2 1 1 Cache (Mbytes) 8 Recording density,

BPI (bits/inch typical) Track density.

TPI (tracks/inch typical) Areal density (Gbits/inch2 max) 98.2 Spindle speed (RPM) 5,400 Internal data transfer rate OD

(Mbytes/sec max) I/O data-transfer rate

(Mbytes/sec max) ATA data-transfer

modes supported Height 9.5 +/-0.2 mm (0.374 +/-.008 inches) Width 69.85 +/-0.25 mm (2.750 +/-0.010 inches) Length 100.2 +/-0.25 mm (3.945 +/-0.010 inches) Weight (typical) 100 grams (0.22 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 3.5 Standby to ready (sec typical) 3.0 Startup current 5V (typical) 1.0 amps Track-to-track seek time

(msec typical) Average seek time (msec typical) 12.5 Average seek, read (msec typical) 12.5

778,000

126,000

100

PIO modes 0–4 Ultra DMA modes 0–5

1.0 (read), 1.5 (write)

Momentus 5400 FDE Product Manual, Rev. C

T a ble 1: S pecifications

Drive specification ST9120826A ST9100826A ST980821A ST960814A ST940811A

Average seek, write (msec typical) 14.5 Full-stroke seek (msec) 22 (typical); 24 (max) Seek power (typical) 2.0 watts Read/write power (typical) Read: 2.50 watts; Write: 2.50 watts Idle mode (typical, low power) 1.40 watts Standby mode 0.96 watts (typical)*** Sleep mode 0.96 watts (typical)*** Voltage tolerance (including noise) 5V ± 5% Ambient temperature 5° to 55°C (operating), –40° to 70°C (nonoperating) Temperature gradient

(°C per hour max, noncondensing) Relative humidity

(noncondensing) Relative humidity gradient 30% per hour max Wet bulb temperature (°C max) 30°C (operating)

Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft) Altitude, nonoperating

(below mean sea level, max) Shock, operating

(Gs max at 2 msec) Shock, nonoperating

(Gs max at 1 msec) Shock, nonoperating

(Gs max at 0.5 msec) Vibration, operating

(max displacement may apply below 10 hz)

Vibration, nonoperating (max displacement may apply below 22 hz)

Drive acoustics, sound power (bels), 2 disc

Idle** 2.4 (typical)

Performance seek 2.9 (typical)

Nonrecoverable read errors 1 per 1014 bits read Annualized Failure Rate (AFR) 0.73% Load/Unload (U/UL) cycles

25°C, 50% relative humidity

32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity

20°C (operating) 30°C (nonoperating)

5% to 90% (operating) 5% to 95% (nonoperating)

40°C (nonoperating)

–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)

250

800

900

400

1.0 Gs (0 to peak, 5–500 Hz)

5.0 Gs (0 to peak, 10–500 Hz)

2.6 (max)

3.1 (max)

600,000 software-controlled power on/off cycles 20,000 hard power on/off cycles

Momentus 5400 FDE Product Manual, Rev. C

T a ble 1: S pecifications

Drive specification ST9120826A ST9100826A ST980821A ST960814A ST940811A

5 years on distribution units. T o determine the warranty for a specific drive, use a web browser to access the following web

Warranty

*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 th e drive when ente ring S3 and S4; while in the S3 and S4 states, dr ive sleep and drive standby

modes will not contribute to battery power consumption.

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.

2.2 Fo rm a tte d ca pacity

Model Formatted capacity* Guaranteed sectors Bytes per sector

ST9120826A 120 Gbytes 234,441,648 512 ST9100826A 100 Gbytes 195,371,568 512 ST980821A 80 Gbytes 156,301,488 512 ST960814A 60 Gbytes 117,210,240 512 ST940811A 40 Gbytes 78,140,160 512

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

and formatting.

2.3 Default logical geom etry

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.

2.4 Physica l organization

Model Read/write heads Number of discs

ST9120826A 4 2 ST9100826A 3 2 ST980821A 3 2 ST960814A 2 1 ST940811A 2 1

Momentus 5400 FDE Product Manual, Rev. C

2.5 Re cording and int er f ac e te ch no l o gy

Technology Specification

Interface Parallel ATA Recording method RLL 0,11 Recording density BPI (bits/inch typical) 778,000 Track density TPI (tracks/inch typical) 126,000 Areal density (Gbits/inch2 max) 98.2 Spindle speed (RPM) (± 0.2%) 5,400 Internal data-transfer rate OD (Mbytes/sec max) 42 I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5) Interleave 1:1 Cache buffer 8 Mbytes (8,192 kbytes)

2.6 Physical characteristics

Height (mm)

(inches)

Width (mm)

(inches)

Length (mm)

(inches)

Typical weight (grams)

(pounds)

9.5 +/–0.2

0.374 +/–0.008

69.85 +/–0.25

2.750 +/–0.010

100.2 +/–0.25

3.945 +/–0.010 100

0.22

Momentus 5400 FDE Product Manual, Rev. C

2.7 Seek tim e

Seek measurem ent s a re t ake n wi th nom inal po w er a t 25 °C amb ient temperature. All tim es a re m easu red using drive diagnostics. The specifications 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.

T yp ical seek times (msec)* Read Write

Track-to-track 1.0 1.5 Average 12.5 14.5 Full-stroke 22.0 24.0 Average latency 5.56 5.56

*Measured in performance mode

Note. These driv es ar e d es ig ne d t o con si sten tl y me et th e s ee k t imes re pre se nted in th i s m anual . Phy si cal se ek s,

regardless of mode (such as track-to-track and average), are expected to meet or exceed 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.

2.8 Tim e to ready

Time to ready Typical

Power-on to Ready (sec) 3.5 8.0 St andby to Ready (sec) 3.0 8.0

Max @ 25°C

Momentus 5400 FDE Product Manual, Rev. C

2.9 Power specifications

The drive receives DC power (+5V) through the interface connector.

2.9.1 Power consumption

Power requirements for the drives are listed in the table on page 10. 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 re aches operating speed.

• Seek mode

During seek mod e, the read /write actuator arm move s toward a spe cific positi on on the d isc surface and does not execute a read or write operati on. Servo ele ctronics ar e acti ve. Seek mode power is mea sure d 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

T a ble 2: DC power

Power di s s ipation +5V average (25° C)

Spinup (typical) 1.0 amps Seek 2.00 watt s Read 2.50 watts Write 2.50 wat t s Idle, performance mode* 1.90 watts Idle, active* 1.70 watts Idle, low power mode* 1.40 watts Standby 0.96 watts Sleep 0.96 watts

*During periods of drive i dle, some offl ine activity may occur acc ording to the S. M.A.R.T. speci fica tion, which may i ncrease acoust ic and

power to operational levels.

Momentus 5400 FDE Product Manual, Rev. C

2.9.1.1 Typical current profile

Figure 5. Typical 5V startup and operation current profile

2.9.2 Conducted 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 b y dividing the nom inal volta ge by the typical RM S read/w rite curr ent.

2.9.3 Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

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