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Crucial MX100 512GB 3-Drive SSD RAID Report

By: Jon Coulter | RAID in Storage | Posted: Jan 31, 2015 3:11 am

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. We run each test 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.


Write Response




Read Response




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 MX100 can hold its own with the more expensive arrays on our chart in this category.



DiskBench - Directory Copy


Version and / or Patch Used:


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






When it comes to large file read/write transfers, our MX100 array is a cut above the rest. This is a new lab record for write transfers, and the second best read transfer performance from a three-drive SATA based array we have seen to date. If you plan to transfer large files on a regular basis, you really cannot beat a three-drive MX100 array.

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