4k Random Read/Write
We precondition the 400GB Seagate Pro for 9,000 seconds, or two and a half hours, receiving performance reports every second. We plot this data to illustrate the drive's descent into steady state.
This dual-axis chart consists of 18,000 data points, with the IOPS on the left and the latency on the right. The red dots signify IOPS, and the grey dots are latency measurements during the test. We place latency data in a logarithmic scale to bring it into comparison range. The lines through the data scatter are the average during the test. This type of testing presents standard deviation and maximum/minimum I/O in a visual manner.
Note that the IOPS and latency figures are nearly mirror images of each other. This illustrates that high-granularity testing can give our readers a good feel for latency distribution by viewing IOPS at one-second intervals. This should be in mind when viewing our test results below. This downward slope of performance only occurs during the first few hours of use, and we present precondition results only to confirm steady state convergence.
Each level tested includes 300 data points (five minutes of one second reports) to illustrate performance variability. The line for each OIO depth represents the average speed reported during the five-minute interval. 4k random speed measurements are an important metric when comparing drive performance, as the hardest type of file access for any storage solution to master is small-file random. One of the most sought-after performance specifications, 4k random performance is a heavily marketed figure.
The Seagate 600 Pro begins our testing with an outstanding 83,355 IOPS. The Micron M500DC averages 56,259 IOPS at 256 OIO, and the Intel DC S3500 averages 57,769 IOPS.
The 600 Pro leverages its terrific 4k random speed to deliver the lowest latency during random read activity.
Garbage collection routines are more pronounced in heavy write workloads, leading to performance variability.
The Seagate 600 Pro falls into second place against the M500DC with an average of 30,991 IOPS. The Micron M500DC distances itself from the pack with an outstanding average of 39,089 IOPS, and the Intel DC S3500 averages 13,841 IOPS.
Our write percentage testing illustrates the varying performance of each solution with mixed workloads. The 100% column to the right is a pure write workload of the 4k file size, and 0% represents a pure 4k read workload. Mixed workload testing reveals strengths, and weaknesses, that remain hidden during typical tests. In reality, much of the real-world data is going to feature mixed data.
The Seagate 600 Pro leverages its outstanding read speed to jump to an early lead in the test. As we mix in more write activity, the 600 Pro delivers leading performance until we reach a 90% write mixture. Overall, the 600 Pro scores very well, with its LAMD controller winning nine of 11 tests.
We record the power consumption measurements during our precondition run. We calculate the stated average results during the last five minutes of the test, after the device has settled into steady state.
A particular strength of the 600 Pro is its frugal power consumption, measured during this test at a low 3.2 watts. The M500DC averages 4.09 watts, and the DC S3500 averages 3.8 watts during the measurement window.
IOPS-to-Watts measurements are generated from data recorded during our precondition run, and the stated average is from the last five minutes of the test. We measure efficiency during write activity, and it is important to note that many SSDs are spec'd with IOPS-to-Watts figures during read activity.
The 600 Pro averages an even 10,000 IOPS-per-Watt, besting the M500DC with its average of 9,545 IOPS-per-Watt; the DC S3500 averages 3,125.
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- Page 1 [Introduction]
- Page 2 [Seagate 600 Pro Internals and Specifications]
- Page 3 [Test System and Methodology]
- Page 4 [Benchmarks – 4k Random Read/Write]
- Page 5 [Benchmarks – 8k Random Read/Write]
- Page 6 [Benchmarks - 128k Sequential Read/Write]
- Page 7 [Benchmarks - Database/OLTP and Web Server]
- Page 8 [Benchmarks – Email Server]
- Page 9 [Final Thoughts]
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