Iometer - Disk Response
Version and / or Patch Used: 1.1.0
We use Iometer to measure disk response times. Disk response times are measured at an industry accepted standard of 4k QD1 for both write and read. Each test is run twice for 30 seconds consecutively, with a five-second ramp-up before each test. The drive/array is partitioned and attached as a secondary device for this testing.
Average Disk Response
Write response times benefit most from RAID 0 because of RST write caching. There is a slight latency increase in read response times for an array vs. a single drive. Write response times are far more important than read response times, and the Optima can hold its own with the more expensive arrays on our chart in this category. Read response times are better than our Q series Pro array, but the rest of the arrays on our chart are able to outperform our optima array in this category.
DiskBench - Directory Copy
Version and / or Patch Used: 220.127.116.11
We use DiskBench to time a 28.6GB block (9,882 files in 1,247 folders) of mostly incompressible random data as it's transferred from our DC P3700 PCIe NVME SSD to our test drive/array. We then read from a 6GB zip file that's part of our 28.6GB data block to determine the test drive/array's read transfer rate. The system is restarted prior to the read test to clear any cached data, ensuring an accurate test result.
Write Transfer Rate
Read Transfer Rate
The Silicon Motion SM2246EN is a read centric controller, and is able to read random data a little faster than our Seagate 600 Pro array and our SanDisk Extreme II array. Write transfers are not very impressive because of our Optima's four-channel controller.
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- Page 1 [Introduction, Drive Specifications, Pricing, and Availability]
- Page 2 [Drive Details, Test System Setup, Array Properties]
- Page 3 [Synthetic Benchmarks - ATTO, Anvil Storage Utilities, CrystalDiskMark, & AS SSD]
- Page 4 [Benchmarks (Trace Based OS Volume) - PCMark Vantage, PCMark 7 & PCMark 8]
- Page 5 [Benchmarks (Secondary Volume) - Disk Response & Transfer Rates]
- Page 6 [Benchmarks (Secondary Volume) - PCMark 8 Extended]
- Page 7 [Final Thoughts]
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