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. In 4,000 seconds, steady state is achieved.
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.
The XS1715 outperforms the DC P3608 1.6TB by a slim margin at QD8-16. The DC P3608 1.6TB takes command at QD64, and by QD256 it outperforms the venerable Samsung XS1715 by 71,000 IOPS or 39%. At over 250,000 IOPS, the DC P3608 is again delivering 10x the performance of a typical SATA-based SSD in a Web Server environment. As a RAID 0 volume, the DC P3608 1.6TB is delivering a little over twice the performance of an 800GB non-RAID volume.
Conclusion: Stripe sizes matter and our chosen stripe size suits this workload very well as evidenced by a 100% increase (over a single volume) in workload performance at QD256.
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