8k Random Read/Write
Server workloads rely heavily upon 8k performance, and we include this as a standard with each evaluation. Many of our server emulations also test 8k performance with various mixed read/write workloads.
The average 8k random read speed of the HGST Ultrastar He6 is 203 IOPS at QD256, and the 7K4000 takes a small lead with 215 IOPS at QD256.
Both drives deliver the best random activity performance-to-latency ratio at QD64.
The He6 offers up 194 IOPS at QD256 compared to the 206 IOPS from the 7K4000.
Both drives perform within a tight envelope as we mix in more write activity.
Power consumption for the He6 averages 8.49 watts, considerably lower than the 7K4000's 9.89 watt average.
Both drives fall into similar efficiency profiles for read and write activity, but the He6 scores a slight win.