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Product Manual
DB35.4 Series SATA
ST3250310CS
100477758
Rev. B
November 2007
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Revision history Revision Date Sheets affected or comments Rev. A 09/06/07 Initial release. Rev. B 11/07/07 4-13. Copyright © 2007 Seagate Technology LLC. All rights reserved. Printed in U.S.A. Publication number: 100477758, Rev. B November 2007 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. DB35 Series, SeaTools and SeaTDD are either trademarks or registered trademarks of Seagate Techno
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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 tables . . . . . . . . . . . . . . .
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ii DB35.4 Series SATA Product Manual, Rev. B
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List of Figures Figure 1. Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2. Typical 12V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 3. Serial ATA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 4. Attaching SATA cabling . . . . . . . . . . . . . . . . . . . . .
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1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate ® DB35.4 Series model drive: ST3250310CS These drives provide the following key features: • Low profile deck design for improved air-flow and low-profile system design. • High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second). • Perpendicular recording, Tunneling Magnetoresistive (TMR) recording heads and EPRML technology, for increased areal density.
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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 necessary to set any jump- ers 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 f
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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 following drive model: ST3250310CS 2.1 Specification summary tables The specifications listed in the following tables are for quick reference. For details on specification measure- ment or definition, see the appropriate section of this manual. DB35.4 Series S
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Table 1: Drive specifications summary for 250 Gbyte model Drive specification ST3250310CS Formatted capacity (512 bytes/sector)* 250 Gbytes Guaranteed sectors 488,397,168 Heads 2 Discs 1 Bytes per sector 512 Default sectors per track 63 Default read/write heads 16 Default cylinders 16,383 Recording density 1,049 kbits/in max Track density 155 ktracks/in avg 2 Areal density 163 Gbits/in avg Internal data transfer rate 1,212 Mbits/sec max Sustained data transfer rate OD 106 Mbytes/sec max I/O dat
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Drive specification ST3250310CS Vibration, operating 5–22 Hz: 0.25 Gs, Limited displacement 22–350 Hz: 0.50 Gs 350–500 Hz:: 0.25 Gs Vibration, nonoperating 5–350 Hz: 5.0 Gs 350–500 Hz:: 1.0 Gs Drive acoustics, sound power Idle** 2.5 bels (typical) 2.8 bels (max) CE Seek Profile 2.6 bels (typical) 2.8 bels (max) 14 Nonrecoverable read errors 1 per 10 bits read Annualized Failure Rate (AFR) 0.68% Warranty 5 years on distribution units. To determine the warranty for a specific drive
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2.2 Formatted capacity Formatted Guaranteed Model capacity* sectors Bytes per sector ST3250310CS 250 Gbytes 488,397,168 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 LBA mode When addressing the drive 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 4.3.1, "Identify Device
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2.5 Physical characteristics Maximum height 20.20 mm (0.794 inches) Maximum width 101.85 mm (4.010 inches) Maximum length 146.99 mm (5.787 inches) Typical weight 380 grams (0.838 lb.) Cache buffer 8 Mbytes (8,192 kbytes) 2.6 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
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2.8 Power specifications The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 18. 2.8.1 Power consumption Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage 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 operat
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2.8.1.1 Typical current profiles Figure 1. Typical 5V startup and operation current profile Figure 2. Typical 12V startup and operation current profile 2.8.2 Conducted noise Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line. • Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz
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2.8.4 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: Power modes Heads Spindle Buffer Active Tracking Rotating Enabled Idle Tracking Rotating Enabled Standby Parked Stopped Enabled Sleep Parked Stopped Disabled • Active mode The drive is in Active mode during the read/write and seek operation
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2.9 Environmental specifications 2.9.1 Drive case temperature Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet (3,048 meters). Drive case temperature should be measured at the location indicated in Figure 5 on page 19. Operating (Drive case temperature) 0° to 75°C (32° to 167°F) Nonoperating (Ambient *) –40° to 70°C (–40° to 158°F) * Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. 2
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2.9.6 Vibration 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. 2.9.6.1 Operating vibration The maximum vibration levels that the drive may experience while meeting the performance standards speci- fied in this document are specified below 5–22 Hz 0.25 Gs (Limited displacement) 22–350 Hz 0.50 Gs 350–500 Hz 0.25 Gs 2.9.6.2 Nonoperating vibration The maximum nonope
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2.10 Acoustics emissions Drive emission of sound is measured consistent with the ECMA-74 and its referenced standards. Testing is conducted at room temperature (approximately 25 degrees C). Emission levels are reported as the total A-weighted sound power levels for, steady state, idle and active (seek) modes of operations. Table 3: Drive A-weighted Sound Power Levels (SWL, BA) Idle[1] CE seek profile 2.5 bels (typ) 2.6 bels (typ) 250 GB model 2.8 bels (max) 2.8 bels (max) [1] During periods o
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2.12 Reliability 2.12.1 Annualized Failure Rate (AFR) The product shall achieve an Annualized Failure Rate (AFR) of 0.68% when operated in an environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifications in Section 2.9 may increase the product AFR. AFR is a population statistics that is not relevant to individual units. AFR specifications are based on the following assumptions for desktop personal computer environments: • 8760 power-on-hours per year. •
