Seagate LD 25 SATA Product Manual

Product Manual

LD25 Series SATA

ST9402115AS ST920217AS

100371155 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. LD25 Series, SeaTools and SeaTDD 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 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.

LD25 Series SATA Product Manual, Rev. C

Contents

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

1.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.1 Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.4 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.5 Recording and interface technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.6 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.7 Seek time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.8 Time to ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.9 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.9.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.9.2 Deferred spinup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.9.3 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.9.4 Voltage tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.9.5 Power-management modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.10 Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.2 Temperature gradient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.3 Humidity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.4 Altitude. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.10.5 Shock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.10.6 Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.11 Acoustics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.12 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.13 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.2 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.15 Environmental protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.15.1 European Union Restriction of Hazardous Substances (RoHS) . . . . . . . . . . . . 16

2.16 Corrosive environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 Handling and static-discharge precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Configuring the drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.3 Serial ATA cables and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.0 Serial ATA (SATA) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.1 Hot-Plug compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.2 Serial ATA device plug connector pin definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4.3.1 Identify Device command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.3.2 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4.3.3 S.M.A.R.T. commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

LD25 Series SATA Product Manual, Rev. C

iii

List of Figures

Figure 1. Typical +5V only startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 2. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 3. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 4. Mounting dimensions—top, side and end view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

LD25 Series SATA Product Manual, Rev. C

1.0 Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate LD25 Series SATA model drives:

• ST9402115AS

• ST920217AS Seagate LD25 Series drives comprise a new product category of 2.5-inch form factor drives designed for non-

notebook PC applications such as:

• Consumer electronics (gaming, small PVRs/DVRs)

• Ultra-small desktop PCs

• Internet appliances LD25 Series drives are quieter, lighter and use less power than 3.5-inch drives. They are ideal for applications

requiring the form and fit of a notebook drive but without some of the design specifications required by notebook drives such as high shock tolerance, high performance, and power management. LD25 Series drives are not presently suited for notebook applications or environments with high operating temperatures.

These drives provide the following key features:

• 5,400 RPM spindle speed

• 2 Mbyte buffer

• High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).

• 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.

• Quiet operation.

• 500 Gs nonoperating shock.

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

• The 3D Defense System™, w hich in clu des Drive Defense , D at a Defen se and D iagnost ic 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.

LD25 Series SATA Product Manual, Rev. C

1.1 About 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 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 sof tw ar e suppo rt. 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 cont ai ns a set of registe rs that sha dow the conte nts of the traditional device r egisters, 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.com.

LD25 Series SATA 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 the ST9402115AS and ST920217AS models.

2.1 Specification 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.

T a ble 1: Drive speci ficat ion s

Drive specification ST9402115AS ST920217AS

Formatted Gbytes (512 bytes/sector)* 40 20 Guaranteed sectors 82,443,600 41,021,800 Bytes per sector 512 Default sectors per track 63 Default read/write heads 16 Default cylinders 16,383 Physical read/write heads 2 1 Discs 1 1 Recording density in BPI (bits/in ch max) 675,900 Track density TPI (tracks/inch max) 114,000 Areal density (Gbits/inch2 max) 81 Spindle speed (RPM) 5,400 Internal transfer rate (Mbytes/sec max) 57.6 I/O data transfer rate (Mbytes/sec max) 150 ATA data-transfer modes supported SATA 1.0, SATA II

Cache buffer (Mbytes) 2 Height (max) 9.5 +/- 0.2 mm (0.374 +/- .0078 inches) Width (max) 69.85 mm (2.75 +/- 0.0098 inches) Length (max) 100.5078 +/- 1.57 mm (3.957 +/- 0.062 inches) Weight (typical) 100 grams (0.22 lb) Average latency (msec) 5.6 Power-on to ready (sec typical) 4.0 Standby to ready (sec typical) 3.0 Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write) Average seek, read (msec typical) <16

PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–6

LD25 Series SATA Product Manual, Rev. C

T a ble 1: Drive speci ficat ion s

Drive specification ST9402115AS ST920217AS

Average seek, write (msec typical) <16 Full-stroke seek (msec) 22 (typical); 24 (max) Startup current 5V, (amps typical) (max = +/- 10%) 1.0 Seek power, random r/w, desktop usage (watts, typical) 2.9 Idle mode (watts, typical) 2.5 Standby and sleep modes (watts, typical) <1.15 Voltage tolerance (including noise) +5.0V ± 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 (operating)

Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000+ ft) Altitude, nonoperating (below mean sea level, max) –304.8 m to 12,192 m (–1000 ft to 40,000+ ft) Shock, operating (Gs max at 2 msec) 100 Shock, nonoperating (Gs max at 2 msec) 500 Shock, nonoperating (Gs max at 1 msec) 350 Shock, nonoperating (Gs max at 0.5 msec) 200 Vibration, operating 0.5 G (22–350 Hz)

Vibration, nonoperating 5 Gs (0 to peak, 22–350 Hz)

Drive acoustics, sound power (bels) Idle** 2.4 (typical) Seek 2.7 (typical) Nonrecoverable read errors 1 per 10 Annualized Failure Rate (AFR) <1.0%, Desktop and gaming use Service life 5 Y ears Warranty To determine the warranty for a specific drive, use a web browser to access

Load/Unload (U/UL) cycles Controlled L/UL cycles

(40°C, 50% relative humidity) Emergency L/UL cycles

(40°C, 50% relative humidity) Supports Hotplug operation per SATA II specification Yes

20°C (operating) 30°C (nonoperating)

8% to 90% (operating) 5% to 95% (nonoperating)

40 (nonoperating)

0.25 G (351–500 Hz)

1.0 G (351–500 Hz)

bits read

the following web page: www.seagate.com/support/service/

From this page, click on the “Verify Y our 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.

50,000

20,000

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

and formatting.

**During period s of driv e idle, some offline activ ity may oc cu r acc or ding to th e S. M.A .R.T. s pe cif icati on, whi ch ma y in crease acoustic and

power to operational levels.

LD25 Series SATA Product Manual, Rev. C

2.2 Formatted ca pacity

Model Formatted capacity* Guaranteed sectors Bytes per sector

ST9402115AS 40 Gbytes 82,443,600 512 ST920217AS 20 Gbytes 41,021,800 512

*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 logi cal geometr y

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 Physical organization

Drive model Read/write heads Number of discs

ST9402115AS 2 1 ST920217AS 1 1

2.5 Recording and inter f ac e technolo gy

Interface Serial ATA (SATA) Recording density BPI (bits/inch max) 675,900 Track density TPI (tracks/inch max) 114,000 Areal density (Gbits/inch2 max) 81 Spindle speed (RPM) (± 0.2%) 5,400 Maximu m Internal tr a n sfer rate (Mbytes/se c) 57.6 I/O data-transfer rate (Mbytes/sec max) 150 (SATA 1.0) Interleave 1:1 Cache buffer 2 Mbytes (2,048 kbytes)

LD25 Series SATA Product Manual, Rev. C

2.6 Physical characteristics

Height (mm)

(inches)

Width (mm)

(inches)

Length (mm)

(inches)

Typical weight (grams)

(pounds)

9.5 +/-0.2

0.374 +/-0.0078

69.85 +/-0.25

2.75 +/-0.0098

100.5078 +/-1.57

3.957 +/-0.062 100

0.22

2.7 Seek time

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 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.

Table 2: Typical seek times

T yp ical seek times (msec) Read Write

Track-to-track <2 <2 Average <16 <16 Full-stroke <24 <24 Average latency 5.6 5.6

Note. These drives are designed to consisten tly me et t he se ek t imes r epr esente d in thi s manu al. P hysical

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.

2.8 Time to ready

Time to ready Typical

Power-on to Ready (sec) 4.0 8.0 St andby to Ready (sec) 3.0 8.0

Max @ 25°C

LD25 Series SATA Product Manual, Rev. C

2.9 Power specifications

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

2.9.1 Power consumption

Power requiremen ts for the dr i ves are lis ted in the ta bl e on p age 7 . 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.

• Operating powe r and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.

• 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 3: DC power

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

Spinup current 1.0 Amp Seek, random r/w, desktop usage 2. 9 Watts Idle* 2.5 Watts Standby and sleep modes <1.15 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.

LD25 Series SATA Product Manual, Rev. C

2.9.1.1 Typical current profile

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

2.9.2 Deferred spinup

LD25 Series SATA drives provide a deferred spinup feature which storage subsystem controllers can use to sequence disc drive initialization. This is beneficial to systems which include multiple Serial ATA hard disc drives because it allows subsystem controllers to stagger the spinup of each drive to accommodate available power supply current. This feature does not impact time-to-ready in typical desktop systems.

To accommo date th e defer red spinup of mu lt iple disc dri ves in an enclosur e, LD 25 Serie s SATA disc drives will spin up only after power is applied to the drive and after successful PHY (Physical layer) initialization. PHY initialization occurs after the PHY enters the DP7:DR_Ready state. This state is reached after a successful exchange of Out-Of-Band (OOB) signals with a functional ho st-side Serial ATA port. In desktop systems, SATA transceivers should initialize OOB as soon as power comes ready to guarantee the drive spins up quickly. Seagate disc drives will not spin up without an operational host-side Serial ATA transceiver.

+ 30 hidden pages