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 is achieved at 7,000 seconds of preconditioning. We precondition with an inverted (all-write) workload.
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.
Although our Web mix does not represent a completely accurate modern web server workload, it is a very taxing workload that does give us a realistic representation of how well an SSD handles an all-read mix. This kind of workload is exactly what the read-centric DC P3520 was designed to do. The DC P3520 is delivering performance that is roughly equivalent to three SATA SSDs at QD64. The DC P3700 has about a 28K advantage at QD256, but it costs more than double what the DC P3520 costs.
Conclusion (TL;DR): The DC P3520 was designed to flourish in a read-centric environment, and the results of this test clearly show Intel hit the nail on the head.
PRICING: You can find the Intel DC P3520 2TB Enterprise PCIe NVMe 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 Intel DC P3520 2TB Enterprise PCIe NVMe SSD retails for $1029 at Amazon.
United Kingdom: The Intel DC P3520 2TB Enterprise PCIe NVMe SSD retails for £985 at Amazon UK.
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