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Toshiba Q Series Pro 256GB RAID 0 SSD Report - Secondary Volume Benchmarks - Disk Response Times

By: Jon Coulter | RAID in Storage | Posted: Jan 16, 2014 2:00 pm



Version and / or Patch Used: 1.1.0

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Iometer is an I/O subsystem measurement, and characterization tool, for single and clustered systems. It was originally developed by the Intel Corporation, and announced at the Intel Developers Forum (IDF) on February 17, 1998. Since then, it's become widespread within the storage industry.


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.



Write Response




Read Response




Average Disk Response




Write response times benefit most from RAID 0 because of write caching. There is a slight latency increase in read response times for an array vs. a single drive. Lack of a DRAM buffer shows itself in this round of testing. Response times, while still good, are slower than the rest of the arrays on our chart.

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