We precondition the drive for 16,000 seconds, or 4.44 hours, receiving performance data every second. We plot this data to observe the test subject's descent into steady-state. We plot both IOPS and Latency. We plot IOPS (represented by blue scatter) in thousands and Latency (represented by orange scatter) in milliseconds.
We observe steady-state for the 5100 MAX is reached at 14,000 seconds of preconditioning, settling in at about 28,000 IOPS at QD32. We note a significant number of outliers in the IO pattern. However, most of them are higher than the average, so that's a good thing. We observe steady-state for the 5100 ECO is reached at 15,000 seconds of preconditioning, settling in at about 18,500 IOPS at QD32.
An Email Server workload is a demanding 8K test with a 50 percent R/W distribution. This application gives a good indication of how well a drive will perform in a write heavy workload environment.
Because the 5100 series SSDs are write-centric in nature, both the 5100 MAX and 5100 ECO do quite well with this write heavy workload. The 5100 ECO and the PM863 are destined to compete for market share. The 5100 ECO outperforms the PM863 at every measured queue depth except for QD16, so we will give the nod to the 5100 ECO over the PM863 when running a write heavy workload.
The 5100 MAX, for the most part, keeps pace with the SM863 up to QD4. At QD8-16, the SM863 has the advantage over the 5100 MAX. The 5100 MAX comes on strong at QD32 and flies past the SM863 by over 3,000 IOPS. Overall, we consider the 5100 MAX and the SM863 equally matched when running a workload of this nature. The M510DC doesn't perform well with this demanding workload. At QD32, the 5100 ECO shows a 9,000 IOPS improvement over the M510DC; the 5100 MAX an 18,000 IOPS improvement.
Conclusion (TL;DR): The 5100 series SSDs deliver outstanding performance in an Email Server environment.
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