Sorry for miss leading information, our PCIE SSD is software raid 1, not raid 0.

Since the drives are PCIE SSD, there is no raid controller that supports hardware raid. we raid those two drive from windows 2008R2 build in software raid.

Since we put the new Intel P3700 PCIE SSD into our server, we cannot see much speed improvement. but the disk speed test tell us the I/O traffic speed is on the promising level. we are not sure where is the bottle neck at the moment.

So we ask around for an idea to see if it's the drive itself, OS or database configuration.