We test the 4K random write performance of a drive through a range of queue depths. The setup for the tests is listed below.
4K Random Write
Transfer Request Size: 4KB, Outstanding I/O: 1-32.
As with the random read testing when it came to random writes our 4-threaded test results were nowhere near the official maximum figure of 450,000 IOPS, the best we saw was 265,743 IOPS at QD16.
4K Random Write v QD Performance compared.
The write performance of the drive is pretty consistent though as the drive sits mid-table throughout the tested queue depths. At all the tested queue depths apart from QD1, the Blue SN570 is faster than the previous Blue SN550.
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