8K Random Read/Write
8K random read and write speed is a metric that is not tested for consumer use, but for enterprise environments this is an important aspect of performance. With several different workloads relying heavily upon 8K performance, we include this as a standard with each evaluation. Many of our Server Emulations below will also test 8K performance with various mixed read/write workloads.
The HGST Ultrastar 7K4000 delivers an average of 215 IOPS at QD256, easily rising above its competitors.
The average 8K random write speed of the HGST HDD is 211 IOPS at QD256. The Seagate Enterprise Capacity V.6 averages 199 IOPS, followed by the Toshiba MG03ACA400 at 196 IOPS. The 7K4000 easily wins this test.
The 7K4000 again masters the mixed read/write testing with a solid lead over competitors.
Once again, we observe the disparate latency distribution, with 54.13% of I/O's (33,202) at 100-200ms, and 15,083 I/O's (24.59%) at 200-400ms, and a broad smattering of I/O's falling into the more desirable ranges.
Power consumption for the HGST 7K4000 averages 9.61 Watts during the test period.
The 7K4000 averages 21 IOPS per Watt in 8K random write, and 21 IOPS per Watt for 8K random read access. This excellent showing outstrips the competing solutions by a decent margin.
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