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 subjects 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 precondition for the 100% random read Web Server testing with an inverse 100% random write workload. We observe the SM863 achieving a steady state at 4,000 seconds of preconditioning. The PM863 achieves a steady state at 6,000 seconds of preconditioning.
The Web Server workload is a pure random read test with a wide range of file sizes. Our test consists of the following file sizes and corresponding percentage of the overall 100 percent workload file size: 512B = 22 percent, 1KB = 15 percent, 2KB = 8 percent, 4KB = 23 percent, 8KB = 15 percent, 16KB = 2 percent, 32KB = 6 percent, 64KB = 7 percent, 128KB = 1 percent, and 512KB = 1 percent.
Web server is an application that the PM863 was designed for. In a 100% read environment, the PM863 and the SM863 perform very similarly. The SM863 has a slight edge over the PM863 at QD1-16. At QD32, the PM863 is able to overtake its MLC powered sibling.
Comparing the PM863 to the Micron M510DC, both of which are in direct competition with one another for market share, we find the PM863 is capable of delivering almost twice the performance at QD32. The M510DC provides a longer warranty and slightly more endurance than the PM863, but in a Web Server environment, neither the warranty nor endurance is a major consideration.
Conclusion: Samsung's PM863 illustrates the value of TLC in a read intensive datacenter environment.
PRICING: You can find the Samsung SM863 960GB Enterprise SSD for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:
United States: The Samsung SM863 960GB Enterprise SSD retails for $571 at Amazon.
United Kingdom: The Samsung SM863 960GB Enterprise SSD retails for £497 at Amazon UK.
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