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WD Red and WD Se NAS HDD Enterprise RAID Report - RAID 5 4K Random Read/Write


By: | HDDs in Storage | Posted: Oct 9, 2013 2:01 pm

RAID 5 4K Random Read/Write

 

wd_red_and_wd_se_nas_hdd_enterprise_raid_report_21

 

Write performance takes a huge hit with the RAID 5 arrays, and while the Se experiences significant variability the array of Reds delivers a very tight performance profile. The Se clearly wins in this test with a much higher average of 582 IOPS compared to the 149 IOPS from the WD Reds.

 

wd_red_and_wd_se_nas_hdd_enterprise_raid_report_22

 

The read performance is on par with the results obtained in RAID 0, with an average of 604 IOPS for the Se, and 543 IOPS at QD256 for the Red array.

 

wd_red_and_wd_se_nas_hdd_enterprise_raid_report_23

 

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.

 

Both arrays experience a slope of degraded performance as we progress into heavier write workloads. This is an expected result of the RAID 5 write performance penalty.

 

wd_red_and_wd_se_nas_hdd_enterprise_raid_report_24

 

The Se clearly has the upper hand in the latency scores for RAID 5 random writes.

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