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12Gb/s SAS Seagate 6TB Enterprise Capacity 3.5 HDD v4 Review

By: Paul Alcorn | HDDs in IT/Datacenter | Posted: Jun 28, 2014 10:50 am
TweakTown Rating: 93%Manufacturer: Seagate

128k Sequential Read/Write




We write to every LBA on both drives to highlight performance degradation from the outer to inner tracks of the drives. The drives begin with much higher speed on the outer tracks. The He6 requires 11 ½ hours to write the entire 6TB of data, but the SAS v4 is considerably faster, completing the task in roughly 9 hours, and the SATA v4 completes the task in 9.5 hours.


The SAS v4 has a 10MB/s advantage over the SATA v4 in sustained transfer speed, allowing it to finish the workload in a shorter amount of time. This increase is apparent in the faster completion time in this test; however, the incremental increase did not show up in short workload testing.




128k sequential speed reflects the maximum sequential throughput of the HDD. The SAS v4 averages 190 MB/s, the SATA v4 wins with an average of 192 MB/s and also exhibits the same tight performance profile. The He6 follows with an average of 158 MB/s.




The Seagate v4 provides lower latency across the board with sequential read activity.




The SAS v4 averages 190 MB/s, the SATA v4 leads with an average of 192 MB/s, and the He6 averages 159 MB/s.






The SAS and SATA v4 leads the mixed sequential testing, running away with the win in every category.




The SAS v4 averages 10.9 Watts, the SATA v4 averages 9.67 Watts, and the He6 averages a flat 7.11 Watts.






The HGST He6 continues to lead our efficiency metrics due to its very low power consumption.

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