With a good controller, sequential read performance equals that of a single
drive, random read performance scales up with number of drives in a RAID.
Thanks. These were the sorts of descriptions that led me to hope that
raid 1 would lead to improved read performance. Eg, one site says that
"Read performance is faster than a single disk; (if the array controller
is capable of performing simultaneous reads from both devices of a
This is why I was then suspecting that the motherboard implementations
are poor. On the other hand, it might be just that the test was more
reflective of sequential than random read performance.
Can anyone suggest a raid 1 array that has improved performance?