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Seagate NAS and WD Red HDD DAS RAID Performance Analysis - RAID 5 4K Random Read/Write

Seagate NAS and WD Red HDD DAS RAID Performance Analysis

The Seagate NAS and the WD Red hard drives go head-to-head in our DAS RAID 0 and RAID 5 tests. Let's see which one is the best choice. (NASDAQ:STX, NASDAQ:WDC)

| HDDs in IT/Datacenter | Posted: Jan 20, 2014 9:31 pm

RAID 5 4K Random Read/Write

 

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Write performance takes a huge hit with the RAID 5 arrays; the Reds average 149 IOPS to the 113 IOPS from the Seagate NAS HDD at QD256.

 

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The read performance is comparable with results obtained in RAID 0, with an average 543 IOPS at QD256 for the Reds, and 410 IOPS for the Seagate NAS HDD.

 

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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. The Seagate NAS HDD exhibits less variability, though it does trail in performance. The gap between the two drives is significantly smaller in parity environments.

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