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Seagate USB Portable Hard Drive Review

Date: 2005-3-12

   Last June Seagate made some really impressive progress having announced 12 new products at a time. The echo from that announcement is still wandering around the market getting materiali...

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Performance in Intel IOMeter: Sequential Read and Write Patterns

The low-level Intel IOMeter benchmark was used to test the linear read and write speed of the drive. During the test session there is a stream of read/write requests sent to the drive with the queue depth=4. the data block size changes every minute. As a result we can see the dependence of the linear read/write speed on the adapt block size.

Seagate USB Portable Hard Drive Review

Seagate USB Portable Hard Drive Review

On the first graph you can see the read speed of the drives. We see that the portable Hard Drive is almost running at its maximum speed starting with 64KB data blocks. Its lag behind the ST910023A is pretty significant when the data blocks are relatively small and is less noticeable when we hit the above mentioned threshold. This situation is quite logical I should say, and the lower maximum read speed than what we have expected can easily be explained by the “smoothing effect?of the actual USB 2.0 interface bandwidth.

Seagate USB Portable Hard Drive Review

Seagate USB Portable Hard Drive Review

The second graph with the results obtained during linear write speed testing is somewhat similar to the previous one in terms of lower maximum speeds demonstrated by the portable drive starting from the 64KB data blocks. Again we see that there is a significant slow down of the portable drive when we process small data blocks.

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