I do believe that this is a general issue since i have at least 5 very different servers with these mpt chips (not only 1030) that all did behave the same. My understanding for now is that
-there is no issue with the settings between the scsipi layer and the virtual disk (TQ, WIDE, SYNC, etc.) -even the WRITE CACHE bit in the raid volume settings page is set; and the write speed increases up to over 60MB/s as soon as I just pull the upper disk out of the server i am testing with -that eventually the link between the raid chip and the upper disk isnĀ“t setup the same way as with the lower disk (Maybe no TQ, WIDE, SYNC) -it MUST be an issue in the netbsd driver, as other OSses perform well on exactly the server I am testing with But what may that be?