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Seagate NAS and WD Red HDD DAS RAID Performance Analysis - RAID 5 128K Sequential Read/Write


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

RAID 5 128K Sequential Read/Write

 

seagate_nas_and_wd_red_hdd_das_raid_performance_analysis_18

 

The 128K sequential speeds reflect the maximum sequential throughput of the HDD, using a file size encountered in normal NAS usage.

 

The WD Reds average 106 MB/s, while the Seagate NAS HDD stutters at QD256 with an average of 63 MB/sS at QD256; down from an average of 76 MB/s at QD128.

 

seagate_nas_and_wd_red_hdd_das_raid_performance_analysis_19

 

Read performance is again largely unaffected by RAID 5; the Seagate NAS HDD array shows an advantage at 462 MB/s at QD256, and the Red array averages 416 MB/s.

 

seagate_nas_and_wd_red_hdd_das_raid_performance_analysis_20

 

The performance gap is smaller in RAID 5 as we mix in heavy write workloads.

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