128K Sequential Read/Write
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.
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.
The 7K4000 again posts excellent performance in our mixed read/write testing, easily leading in this test.
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.
The HGST 7K4000 averages 8.39 Watts during sequential write testing, besting the other HDDs.
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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- Page 1 [Introduction]
- Page 2 [HGST Ultrastar 7K4000 Specifications]
- Page 3 [HGST Ultrastar 7K4000 Internals]
- Page 4 [Test System and Methodology]
- Page 5 [4K Random Read/Write]
- Page 6 [8K Random Read/Write]
- Page 7 [128K Sequential Read/Write]
- Page 8 [Database/OLTP and Webserver]
- Page 9 [Fileserver and Emailserver]
- Page 10 [Final Thoughts]