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Samsung SM863 & PM863 960GB Enterprise SATA III SSD Review

By: Jon Coulter | SSDs in IT/Datacenter | Posted: Jan 20, 2016 2:46 pm
TweakTown Rating: 96%Manufacturer: Samsung

128K Sequential Write/Read





We precondition the drive for 6,500 seconds, or 1.8 hours, receiving performance data every second. A sequential steady state is achievable in a much shorter span of time than a random steady state. We plot both MB/s and Latency. We plot MB/s using blue scatter and Latency using orange scatter. We observe that both the SM863 and PM863 achieve steady state at 0 seconds of preconditioning, indicating that the previous 2x plus LBA fill phase achieved a sequential steady state. Both drives exhibit tight, consistent performance.






Samsung specs the 960GB SM863/PM863 as capable of delivering up to 485/475 MB/s sustained sequential write speeds. With our configuration, we can extract significantly better results. The SM863 is delivering 530 MB/s at QD8-32, the PM863 510 MB/s at QD8-32; indicating that Samsung's sequential write specifications are quite conservative. As we've seen so far, the SM863 is capable of delivering a nice performance boost over the 845DC EVO. The M510DC is again easily outperformed by all three of Samsung's offerings.





All of the drives in our test pool achieve maximum performance at QD4. The PM863 is the star of the show delivering a massive 559 MB/s sustained sequential read performance. This is well over the 520 MB/s quoted by Samsung. The SM863 is not far behind, with 555 MB/s sustained sequential read performance. Micron's M510DC is again overmatched.


Conclusion: All of the Samsung offerings in our test pool deliver best-in-class sequential performance.

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