8K Random Write/Read
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 8,000 seconds of preconditioning, settling in at about 42,000 IOPS. We observe steady-state for the 5100 ECO is reached at 11,000 seconds of preconditioning, settling in at about 14,500 IOPS.
8K random is a more demanding workload than 4K random. The 5100 MAX again delivers stunning results, delivering 43,137 IOPS at QD4. The 5100 ECO delivers the second-best result, delivering 14,729 IOPS at QD1. Even the powerful MLC-based SM863 is no match for the eTLC powered Micron 5100 SSDs when writing random data. Comparing the 5100 ECO to the TLC powered PM863 reveals that the 5100 ECO delivers nearly 50% better performance.
A pure 8K read workload takes its toll on the 5100 series SSDs. The Samsung offerings handily outperform both the 5100 MAX and 5100 ECO with this demanding workload. The MLC-powered M510DC manages to deliver better results than the 5100 MAX and 5100 EVO when reading 8K data. These results are testament to the write-centric nature of Micron's 5100 series SSDs.
Conclusion (TL;DR): Micron's 5100 series SSDs greatly favor write-centric workloads over read-centric workloads.
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