Definitive 2TB HD Roundup: WD, Seagate, Samsung
ATTO Disk Benchmark
ATTO is a more straight-forward type of disk benchmark that measures transfers across a specific volume length. It measures raw transfer rates for both reads and writes and graphs them out in an easily interpreted chart. We chose 0.5KB through 8,192KB transfer sizes over a total max volume length of 256MB.
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Samsung EcoGreen F3 2TB |
Seagate Barracuda LP 2TB |
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Seagate Barracuda XT 2TB |
Seagate Constellation ES 2TB |
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WD AV-GP 2TB |
WD Caviar Black 1TB |
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WD Caviar Black 2TB |
WD Caviar Green 2TB |
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WD RE4 2TB |
WD RE4-GP 2TB |
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Three HDDs exceeded write speeds of 140MB/Sec on our ATTO test: the WD RE4 2TB (144.3MB/Sec), Seagate Barracuda XT 2TB (143.8MB/Sec), and the Seagate Constellation ES 2TB (141.0MB/Sec). Both WD Caviar Black drives also showed strong write performance--the 2TB drive had a write speed of 138.1MB/Sec and the 1TB version saw 133.7MB/Sec. Two of the general-purpose HDDs also had decent write performance: The Samsung EcoGreen F3 2TB had a write speed of 126MB/Sec and the Seagate Barracuda LP wrote at 122.3MB/Sec.
For read speeds, a total of five drives managed speeds that exceeded 140MB/Sec: The WD RE4 2TB lead the pack at 155.8MB/Sec, followed by the WD Caviar Black 2TB (148.9MB/Sec), Seagate Barracuda XT 2TB (147.5MB/Sec), Seagate Constellation ES 2TB (145.1MB/Sec), and the WD Caviar Black 1TB (142.8MB/Sec). The top-performing general-purpose HDD was the Seagate Barracuda LP, with a write speed of 122.6MB/Sec.
Once again, the two 6Gb/Sec drives didn't see any significant performance benefit from their faster SATA interfaces. On the other hand, the 120GB OCZ Vertex Turbo 2.5-inch SSD had a lighting-fast write speed of 201.5MB/Sec and a zippy read speed of 271.7MB/Sec.
