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Seagate Barracuda XT Hard Drive ST32000641AS E-mail
Reviews - Featured Reviews: Storage
Written by Olin Coles   
Friday, 04 December 2009
Table of Contents: Page Index
Seagate Barracuda XT Hard Drive ST32000641AS
Features and Specifications
Drive Testing Methodology
Seagate Barracuda XT: SATA 3G vs 6G
Basic IO Bandwidth
Random Access IOPS Tests
I/O Response Time
Sequential Performance Tests
Buffered Transaction Speed
Desktop Storage Final Thoughts
Seagate Barracuda XT Conclusion

ATTO Disk Benchmark

The ATTO Disk Benchmark program is free, and offers a comprehensive set of test variables to work with. In terms of disk performance, it measures interface transfer rates at various intervals for a user-specified length and then reports read and write speeds for these spot-tests. There are some minor improvements made to the 2.34 version of the program, but the benchmark is still limited to non-linear samples up to 256MB. ATTO Disk Benchmark requires that an active partition be set on the drive being tested.

While the bandwidth results are not realistic for determining the maximum drive speeds, ATTO Disk Benchmark is still a good tool for illustrating bandwidth using various file size chunks. Please consider the results displayed by this benchmark to be basic bandwidth performance indicators.


Our basic I/O bandwidth tests begin with the Seagate Barracuda XT SATA 6Gb/s Hard Drive connected to the integrated Intel ICH10R Southbridge chip, as the ATTO Disk Benchmark tools performs file transfers ranging from 0.5 KB to 8192 KB. The ST32000641AS model reveals a 148 MBps read plateau starting from roughly 32-8192 KB file chunks, while the 146 MBps write performance plateaus from 32-8192 KB. The dip in read performance appeared in every test, but moved from one chunk size to another.


Drive Hardware Tested

In our next section, Benchmark Reviews compares random access IOPS performance among high-end storage devices using HD Tune Pro...



# RE: Seagate Barracuda XT Hard Drive ST32000641ASStas 2010-02-22 05:34
Bad SATA 6G performance is not Seagate fault - it's a result of the use of Marvell chip, that shows better than SATA I+ resuls only in a pair wirh Marvell drive controllers (not alwais, though).

Think with any SAS 6G HBA the drive will show much better results.
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# Thanksmorisbecon 2010-02-27 19:39
Thanks for the nice post.
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# small correctiontwk 2010-10-23 05:23
The IOPS graph for the ssd isn't correct, the numbers displayed in the chart are those of the 2TB drive and no the SSD. The numbers in the article appear correct however the image is erroneous.

Good article though.
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