RAID 5 128K Sequential Read/Write
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.
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.
The performance gap is smaller in RAID 5 as we mix in heavy write workloads.