Sequential flow test
Speed (Mb / s) SATA Standalone 3
Disc 1: Read Write = 108 = 161
Disc 2: Read Write = 146 = 149
Disc 3: Read Write = 143 = 145
Disc 4: Read write = 118 = 122
fashion Raid5 64 KB
Read Write = 44 = 286
there is no error it is 44MB / s write!
on top of that the instructions supplied only available in German!
luckily there google translation