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Product Manual
Momentus 7200.4 SATA
ST9500420AS ST9500420ASG
ST9320423AS ST9320423ASG
ST9250410AS ST9250410ASG
ST9160412AS ST9160412ASG
ST9120410AS ST9120410ASG
ST980412AS ST980412ASG
100534376
Rev. C
November 2010
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© 2010 Seagate Technology LLC. All rights reserved. Publication number: 100534376, Rev. C, November 2010 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Momentus and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their r
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Contents 1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Specification summary table . . . . . . . . . . . . . . . .
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ii Momentus 7200.4 SATA Product Manual, Rev. C
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List of Figures Figure 1. Typical +5V only startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 3. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 4. Mounting dimensions—top, side and end view . . . . . . . . .
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1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate ® Momentus 7200.4 SATA model drives: Standard models Free Fall Protection models ST9500420AS ST9500420ASG ST9320423AS ST9320423ASG ST9250410AS ST9250410ASG ST9160412AS ST9160412ASG ST9120410AS ST9120410ASG ST980412AS ST980412ASG These drives provide the following key features: • 7200-RPM spindle speed. • 16-Mbyte buffer. • Free Fall Protection (on ST9500420ASG, ST9320423ASG,
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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 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 tran
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2.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. 2.1 Specification summary table The specifications listed in this table are for quick reference. For details on specification measurement or defi- nition, see the appropriate section of this manual. Table 1: Drive specifications ST9500420AS ST9320423AS ST9250410AS ST9160412AS ST9120410AS ST980412AS Drive specification ST9500420ASG ST9320423ASG ST9250410ASG ST91
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Table 1: Drive specifications ST9500420AS ST9320423AS ST9250410AS ST9160412AS ST9120410AS ST980412AS Drive specification ST9500420ASG ST9320423ASG ST9250410ASG ST9160412ASG ST9120410ASG ST980412ASG Read power (typical) 2.1 watts Write power (typical) 2.2 watts Idle mode, low power (typical) 0.69 watts Standby mode 0.20 watts (typical)*** Sleep mode 0.20 watts (typical)*** Voltage tolerance (including noise) +5V ± 5% Ambient temperature 0°C to 60°C (operating) –40°C to 70°C (nonoperating) Tempe
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2.2 Formatted capacity Model Formatted capacity* Guaranteed sectors Bytes per sector ST9500420AS and ST9500420ASG 500 Gbytes 976,773,168 512 ST9320423AS and ST9320423ASG 320 Gbytes 625,142,448 512 ST9250410AS and ST9250410ASG 250 Gbytes 488,397,168 512 ST9160412AS and ST9160412ASG 160 Gbytes 312,581,808 512 ST9120410AS and ST9120410ASG 120 Gbytes 234,441,648 512 ST980412AS and ST980412ASG 80 Gbytes 156,301,488 512 *One Gbyte equals one billion bytes when referring to hard drive capacit
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2.5 Recording and interface technology Interface Serial ATA (SATA) Recording method Perpendicular Recording density BPI (bits/inch max) 1490k Track density TPI (tracks/inch max) 265k 2 Areal density (Gbits/inch max) 394 Spindle speed (RPM) (± 0.2%) 7200 Maximum Internal transfer rate (Gbits/sec) 1.23 I/O data-transfer rate (Gbits/sec max) 3.0 Interleave 1:1 Cache buffer 16 Mbytes (16,384 kbytes) 2.6 Physical characteristics Drive specification Height (mm) 9.5 +/-0.2 (inches) 0.370 +/-0.008 W
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2.7 Seek 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 (msec) Read Track-to
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2.9 Power specifications The drive receives DC power (+5V) through a native SATA power connector. 2.9.1 Power 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. • 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
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2.9.1.1 Typical current profile Figure 1. Typical +5V only startup and operation current profile Momentus 7200.4 SATA Product Manual, Rev. C 9
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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 by dividing the nominal voltage by the typical RMS read/write current. 2.9.3 Voltage tolerance Voltage tolerance (including noise): 5V ± 5% 10 Momentus 7200.4 SATA Product
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2.9.4 Power-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
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2.10 Environmental specifications This section provides the temperature, humidity, shock, and vibration specifications for Momentus 7200.4 SATA drives. 2.10.1 Ambient 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 1000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet. Operating: 0°
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2.10.6.2 Nonoperating 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 1000 Gs based on a nonrepetitive half-sine shock pulse of 1 msec du
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2.12 Electromagnetic immunity When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table: Table 6: Radio frequency environments Performance Reference Test Description level standard Electrostatic discharge Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV B EN 61000-4-2: 95 Radiated RF immunity 80 to 1,000 MHz, 3 V/m, A EN 61000-4-3: 96 80% AM with 1 kHz s
