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HGST Ultrastar 7K4000 Enterprise HDD Review - 128K Sequential Read/Write

HGST Ultrastar 7K4000 Enterprise HDD Review

HGST's Ultrastar 7K4000 is a 3.5" 7,200 RPM Enterprise-class HDD geared for cloud storage, massive scale out, RAID arrays and NAS. Let's take a look. (NASDAQ:WDC)

| HDDs in IT/Datacenter | Posted: Aug 16, 2013 10:05 pm
TweakTown Rating: 95%      Manufacturer: HGST

128K Sequential Read/Write

 

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The 128K sequential speeds reflect the maximum sequential throughput of the HDD using a realistic file size encountered in an enterprise scenario.

 

The HGST Ultrastar 7K4000 averages 172 MB/s at sequential read speeds, following the Seagate with 178 MB/s and beating the Toshiba with its 163 MB/s.

 

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The 7K4000 HDD averages 173 MB/s in sequential write speed, while the Seagate averages 175 MB/s and the Toshiba averages 162 MB/s.

 

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The 7K4000 again posts excellent performance in our mixed read/write testing, easily leading in this test.

 

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The HGST 7K4000 offers up 79.47% of requests in the 20-40ms range and 20.52% at 6-8ms. This great performance illustrates the strength of the 7K4000 with sequential data access.

 

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The HGST 7K4000 averages 8.39 Watts during sequential write testing, besting the other HDDs.

 

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The 7K4000 provides an average of 20 MB/s per Watt for 128K sequential write and 20 MB/s per Watt for sequential read.

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