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The Seagate Barracuda 7200.10 ST3320620AS is a 320 GB hard drive with a 16 MB buffer and a SATA 3 GB /s interface.

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Perpendicular recording improves sustained transfer rates

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Great value drive (large capacity, good performance at a good price ~$90)

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Superceded by the 7200.11 drives with 2nd generation perpendicular recording

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First drive had numerous errors - many bad sectors

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Makes a lot of clicking sounds as it is reading data off the disk

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Slow access timings

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The Seagate Barracuda 7200.10 ST3320620AS is a 320 GB hard drive with a 16 MB buffer and a SATA 3 GB /s interface. It is featured as the hard drive of choice in ExtremeTech's best bang for the buck PC. This drive makes use of the perpendicular recording found on all drives in the Barracuda 7200.10 family. This drive is an excellent value purchase coming in around $90 and effective bargain hunter can find it for $80 or less. At this price point you get a very large capacity drive that delivers excellent performance.

Perpendicular recording is a technology first introduced in the 7200.10 line and is succeeded by the second generation version found in the newer 7200.11 drives. Perpendicular recording aligns the bits vertically on the disk rather than horizontally, effectively squeezing more data in a smaller area. This means that hard drives made in such a way can increase their maximum capacity, as well as deliver increased sustained data throughput. The drive head can read more data in a small physical distance.

Figure: Bit orientations for longitudinal recording (above) and perpendicular recording (below). (via The Tech Report)

Specifications 320 GB
Model Number ST3320620AS
Interface SATA 3.0Gb/s
Cache 16 MBytes
Capacity 320 GB
Guaranteed Sectors 625,142,448
Height (max) 26.1 mm (1.028 inches)
Width (max) 101.6 mm (4.010 inches)
Length (max) 146.99 mm (5.787 inches)
Weight (typical) 635 grams (1.40 pounds)
Spindle Speed 7,200 rpm
Average latency 4.16 msec
Random read seek time <8.5 msec
Random write seek time <10.0 msec
MTBF 700,000 hours
Annual Failure Rate 0.34 %
Maximum start current, DC 2.80 amps
Post Review
04/24/2008 08:20

I use this hard drive in my main system and love it. Currently it's holding most of my music collection. The 500GB model is in my mythbox.

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