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Barracuda 7200.7 Serial ATA
ST3200822AS
ST3160827AS
ST3160023AS
ST3160021AS
ST3120827AS
ST3120026AS
ST3120022AS
ST380817AS
ST380013AS
ST380011AS
ST340111AS
ST340014AS
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Barracuda 7200.7 Serial ATA ST3200822AS ST3160827AS ST3160023AS ST3160021AS ST3120827AS ST3120026AS ST3120022AS ST380817AS ST380013AS ST380011AS ST340111AS ST340014AS
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©2003–2004–2005 Seagate Technology LLC All rights reserved Publication number: 100270024, Rev. N September 2005 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trade- marks or trademarks of Seagate Technology LLC. Other product names are registered trade- marks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No
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Contents 1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 About the Serial ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Native Command Queuing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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iv Barracuda 7200.7 Serial ATA Product Manual, Rev. N
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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 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 ® Barracuda 7200.7 Serial ATA model drives: Table 1: Barracuda 7200.7 Serial ATA models Distribution models Distribution models OEM models not supporting NCQ supporting NCQ [1] ST3200822AS ST3200822AS ST3160827AS ST380013AS [1] [1] ST3160023AS ST380011AS ST3160023AS ST3120827AS [1] [1] ST3120026AS ST380817AS ST3160021AS ST340111AS [1] [1] ST380013AS ST3120026AS ST340014AS [
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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 fr
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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 ST3200822AS, ST3160827AS, ST3160023AS, ST3160021AS, ST3120827AS, ST3120026AS, ST3120022AS, ST380817AS, ST380013AS, ST380011AS, ST340111AS and ST340014AS models. 2.1 Specification summary table The specifications listed in this table are for quick reference. For d
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Table 2: Drive specifications ST3160827AS ST3120827AS ST380817AS Drive specification ST3200822AS ST3160023AS ST3120026AS ST380013AS ST340111AS ST3160021AS ST3120022AS ST380011AS ST340014AS Average latency (msec) 4.16 Power-on to ready (typical) 10 sec Standby to ready (typical) 10 sec Startup current (typical) 12V (peak) 2.8 amps Track-to-track seek time (msec typical) <1.0 (read), <1.2 (write) Average seek, read (msec typical) 8.5 Average seek, write (msec typical) 9.5 Seek power (typical) Op
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Table 2: Drive specifications ST3160827AS ST3120827AS ST380817AS Drive specification ST3200822AS ST3160023AS ST3120026AS ST380013AS ST340111AS ST3160021AS ST3120022AS ST380011AS ST340014AS Contact start-stop cycles 50,000 (25°C, 40% relative humidity) Supports Hotplug operation per SATA II Yes specification *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, som
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2.4 Physical organization Drive model Read/write heads Number of discs ST3200822AS, ST3160827AS, ST3160023AS and ST3160021AS 4 2 ST3120827AS, ST3120026AS and ST3120022AS 3 2 ST380817AS, ST380013AS and ST380011AS 2 1 ST340111AS and ST340014AS 1 1 2.5 Recording and interface technology Interface Serial ATA (SATA) Recording method 16/17 EPRML Recording density BPI (bits/inch max) 595,000 (671,500 on ST3200822AS model) Track density TPI (tracks/inch max) 94,600 (98,000 on ST3200822AS model) 2 Area
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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 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 3: Typical seek times *Typical seek times (msec) Read Write Tr
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Operating power 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 mode. [1] Table
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2.8.1.1 Typical current profiles +5 Volt Current during spindle start — Typical Amperes 1.50 1.25 1.00 Amps 0.75 0.50 0.25 0.0 0.0 2 4 6 8 10 12 14 16 18 Seconds Figure 1. Typical 5V startup and operation current profile +12 Volt Current during spindle start — Typical Amperes 2.4 2.0 1.6 Amps 1.2 0.8 0.4 0.0 18 0.0 2 4 6 8 10 12 14 16 Seconds Figure 2. Typical 12V startup and operation current profile 2.8.2 Deferred spinup Barracuda 7200.7 Serial ATA drives provide a deferred spinup feature whic
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cessful exchange of Out-Of-Band (OOB) signals with a functional host-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. Additional details Upon system power up, PHY communication is initiated with a COMRESET signal, which is generated by the host-side transceiver. COMRESET is followed by a COMINIT signal
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2.8.5 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 operations.
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2.9.2 Temperature gradient Operating 20°C per hour (68°F per hour max), without condensation Nonoperating 30°C per hour (86°F per hour max) 2.9.3 Humidity 2.9.3.1 Relative humidity Operating 5% to 90% noncondensing (30% per hour max) Nonoperating 5% to 95% noncondensing (30% per hour max) 2.9.3.2 Wet bulb temperature Operating 33°C (91.4°F max) Nonoperating 40.0°C (104°F max) 2.9.4 Altitude Operating –60.96 m to 3,048 m (–200 ft to 10,000+ ft) Nonoperating –60.96 m to 12,192 m (–200 ft to 40,000
