Both controllers behave well when writing to mirror arrays. The HighPoint is good with small data chunks while the Promise shows higher top speeds.
The HighPoint draws a zigzagging graph with the four-disk RAID0. Both controllers show good scalability, but the top speeds of the Promise’s arrays are always higher than those of the opponent controller’s.
The Promise shows higher top speeds with RAID5, too. The degraded arrays are almost as fast as the normal arrays.
The Promise controller seems to be fond of doing something odd with RAID6. This time around, both degraded arrays are faster than the normal one.