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 average 8K random read speed of the HGST SSD800MM is 88,909 IOPS at QD256, peaking at QD64 with 90,429 IOPS, providing the HGST a slight lead over the Toshiba PX02SMF080, which averages 88,120 IOPS at QD256. The Optimus manages an average of 74,240 IOPS at QD256, but peaks at 80,000 IOPS at QD64.
The average 8K random write speed of the HGST is a very solid 32,842 IOPS at QD256, and the Toshiba is 15,715 IOPS at QD256. The wide performance variability of the Toshiba again penalizes the average, while the Optimus delivers an average of 23,736 IOPS at QD256.
The Toshiba PX02SMF080 and Optimus vie for second place as we mix in more writes, but the HGST proves to be much more robust in heavier write workloads. Between the two 12Gb/s SSDs, the HGST drive has a much cleaner performance range.
The HGST SSD800MM has a large percentage of its 8K write activity, 51.35%, land in the range of 6-8ms. 33.1% of I/O falls into the 8-10ms range, and 10.23% lands at 4-6ms.
Power consumption for the HGST averages 7.37 Watts, while the Toshiba averages 6.07 Watts and the Optimus runs at 7.82 Watts.
The HGST flies above the other two SSDs and delivers 4,433 IOPS per Watt during preconditioning.
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- Page 1 [Introduction]
- Page 2 [HGST Ultrastar SSD800MM Specifications]
- Page 3 [SAS 12Gb/s Architecture]
- Page 4 [HGST Ultrastar SSD800MM Internals]
- Page 5 [Test System and Methodology]
- Page 6 [4K Random Read/Write]
- Page 7 [8K Random Read/Write]
- Page 8 [128K Sequential Read/Write]
- Page 9 [Database/OLTP and Webserver]
- Page 10 [Fileserver and Emailserver]
- Page 11 [Final Thoughts]
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