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SanDisk Extreme II 240GB RAID 0 SSD Report

By: Jon Coulter | RAID in Storage | Posted: Dec 5, 2013 11:03 pm

Iometer

 

Version and / or Patch Used: 1.1.0

Product Homepage: http://www.iometer.org

Download here: http://sourceforge.net/projects/iometer

 

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 wide spread 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 thirty 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

 

sandisk_extreme_ii_240gb_raid_0_ssd_report_32

 

Read Response

 

sandisk_extreme_ii_240gb_raid_0_ssd_report_33

 

Average Disk Response

 

sandisk_extreme_ii_240gb_raid_0_ssd_report_34

 

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. Read response times are class leading and the main reason the Extreme II is considered a Hyper-Class SSD.

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