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HGST FlashMAX II 2.2TB Enterprise PCIe SSD Review

By: Paul Alcorn | PCIe SSDs in IT/Datacenter | Posted: Jul 29, 2014 5:50 pm
TweakTown Rating: 93%Manufacturer: HGST

8k Random Read/Write






Many server workloads rely heavily upon 8k performance and we include this as a standard with each evaluation. Many of our server workloads also test 8k performance with various mixed read/write distributions.


The FlashMAX II averages 207,859 IOPS at 256 OIO, and the Microns top the chart at 409,751 and 405,481 IOPS. From 8 - 32 OIO the FlashMAX II has an advantage over its MLC competitor, but the formidable random read speed of the P420m pulls ahead under higher loads.




The FlashMAX II latency results surprisingly beat the SLC P320h at 8 and 16 OIO.




The Micron SSDs leverage their impressive random read speed to win this challenge, but the FlashMAX II continues to exhibit excellent low queue depth performance with the lead up to 150,000 IOPS.




The FlashMAX II does not fare as well in 8k random write workloads, and tops out at a speed of 59,279 IOPS at 256 OIO, while the P420m hits 79,633 IOPS and the P320h leads with 105,363 IOPS.






The Micron offerings lead the test with higher performance.




The mixed 8k read/write testing reveals an interesting wrinkle in our results. The Micron P420m experiences a significant jump in performance when it reaches a 100% write workload, but the FlashMAX II matches its performance for the majority of the test.


The P420m has very high speed at 100% read, but falls quickly with a 10% write workload, and falls to the same speed of the FlashMAX II when we reach a 20% write workload. Overall, the two MLC products are very comparable in IOPS during common mixed workloads.




We witness the same increase in latency and variability for the P420m during the 8k mixed workload testing, while the FlashMAX II offers a tight predictable latency slope. The FlashMAX takes the win in our mixed workload testing.

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