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 27,000 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 20,500 IOPS at QD32.
An On-Line Transaction Processing (OLTP) / Database workload is a demanding 8K test with a 66/33 percent R/W distribution. OLPT is online processing of financial transactions such as credit cards and high-frequency trading in the financial sector. Database workloads are challenging for any storage solution.
Database workloads have a greater mix of random read than an Email Server workload does, which is why the read-centric SM863 is able to distance itself from the 5100 MAX. The 5100 MAX does outperform the PM863 by a significant margin until we hit QD16, where they both perform equivalent to one another. The 5100 ECO brings up the rear at QD1-2. At QD4, the 5100 ECO, PM863, and the M510DC deliver similar performance. At queues above four, the 5100 ECO, PM863, and the M510DC part ways. At queues of 8 and higher, the PM863 performs better than the 5100 ECO. The 5100 ECO outperforms the M510DC by a significant margin at QD8 and higher.
Conclusion (TL;DR): Due to the write-centric nature of the 5100 series, the ECO and MAX are outperformed by their Samsung counterparts with a majority random read workload.
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