It is the physical properties of the HDD that are crucial when processing large files, so there is no wonder the HDDs from Seagate and Maxtor are on top here.
The drives have similar speeds on small files. Note the good results of the HDDs from Hitachi and Maxtor and yet another discomfiture of the WD4000KS.
Now the file-sets are going to be copied.
There’s no clear winner here, although the hitherto unremarkable WD4000YR is the fastest in two out of three arrays. Well, each of the three drives from WD did well in this test.
The Hitachi failed in RAID10, and the drives from Maxtor and Seagate in RAID5.
The WD4000KS is brilliant in RAID10, but far from that in RAID5. The Hitachi leaves the others behind when working in RAID0 – quite to my surprise.
The WD4000KS copes best with the task of copying small files, but the Hitachi is following it very closely.