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Seagate 400GB Barracuda 7200.8 SATA Hard Disk Review
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The Package

The Seagate 400GB Barracuda 7200.8 SATA hard disk came in a sealed plastic bag which protects it against moisture as well as electrostatic charges.

Inside, the hard disk is further protected against shock and direct force by a semi-rigid plastic box.

Inside the box is the focus of this review - the Seagate 400GB Barracuda 7200.8 SATA hard disk!

We will examine this drive in detail soon enough, but let's go through its specifications first.

 

Specifications

Model

• ST3400832AS

Formatted Capacity

• 400 GB

Guaranteed Sectors

• 781,422,768

Bytes Per Sector

• 512 bytes

Sectors Per Track

63

Read/Write Heads

16

Cylinders

16,383

Recording Method

• 16/17 EPRML

Interleave

• 1 : 1

Maximum Recording Density

• 763,000 bits per inch

Average Track Density

120,000 tracks per inch

Average Areal Density

• 91,560 Mbits per square inch

Spindle Speed

• 7,200 RPM

Average Latency

• 4.16 msec.

Maximum Internal Data Transfer Rate

95 MB/s

Sustained Internal Data Transfer Rate

• 65 MB/s

Sustained Internal Data Transfer Rate

• 65 MB/s

Maximum I/O Data Transfer Rate

• 150 MB/s

Interface

• Serial ATA

Supported ATA Data Transfer Modes

• Ultra DMA Modes 0 to 6
• Multiword DMA Modes 0 to 2
• PIO Modes 0 to 4

Supported SATA Data Transfer Mode

• 150 Gbits/s

SATA II Hotplug Capability

• Yes

Cache Buffer

• 8 MB SDRAM

Maximum Height

• 26.11 mm
• 1.028 inches

Maximum Width

• 101.85 mm
• 4.010 inches

Maximum Length

• 146.99 mm
• 5.787 inches

Maximum Weight

• 636 g
• 1.39 lb

Power-On To Ready (Typical)

• 10 sec.

Standby To Ready (Typical)

• 10 sec.

Track-To-Track Seek Time (Typical)

• 0.8 msec. (Read)
• 1.0 msec. (Write)

Average Read Seek (Typical)

• 8.0 msec.

Average Write Seek (Typical)

• 9.0 msec.

Typical Startup Current @ 12V (peak)

• 2.8 A

Seek Power (Typical)

• 9.9 W

Operating Power (Typical)

• 9.2 W

Idle Mode (Typical)

• 7.71 W

Standby Mode (Typical)

• 1.2 W

Sleep Mode (Typical)

• 1.2 W

Voltage Tolerance
(Including Noise)

• 5V ± 5 %
• 12V ± 10 %

Ambient Temperature

• 0 °C to 60 °C (Operating)
• -40 °C to 70 °C (Non-Operating)

Maximum Temperature Gradient

• 20 °C per hour (Operating)
• 30 °C per hour (Non-Operating)

Relative Humidity

• 5 % to 90 % (Operating)
• 5 % to 95 % (Non-Operating)

Maximum Relative Humidity Gradient

• 30% per hour

Maximum Wet Bulb Temperature

• 37.7 °C (Operating)
• 40.0 °C (Non-Operating)

Maximum Altitude (Operating)

• - 60.06 m to 3,048 m
• - 200 ft to 10,000+ ft

Maximum Altitude (Non-Operating)

• - 60.06 m to 12,192 m
• - 200 ft to 40,000+ ft

Maximum Operating Shock
(@ 2 msec.)

• 63 G

Maximum Non-Operating Shock
(@ 2 msec.)

• 300 G

Operating Vibration

• 0.25 G acceleration

Non-Operating Vibration

• 0.25 G (5-22 Hz)
• 5.0 G (22-350 Hz)

Idle Drive Acoustics

• 2.8 bels (Typical)
• 3.4 bels (Maximum)

Quiet Seek Drive Acoustics

• 3.2 bels (Typical)
• 3.4 bels (Maximum)

Performance Seek Drive Acoustics

• 3.7 bels (Typical)
• 3.9 bels (Maximum)

Contact Start-Stop Cycles
(25°C, 50% relative humidity)

• 50,000 Cycles

Non-Recoverable Read Errors

• 1 error per 1014 bits read

Annualized Failure Rate

• 0.34 %

Service Life

• 5 Years

Warranty

• 5 Years Limited Warranty



 

 
   
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