Have two Samsung 840 pro's in Raid 0 on Asus maximus 5 gene mobd using intel sata3 ports. Intel IRST running ver. 11.1.0.1006. Running ATTO test works fine until I use IRST to enable write-back caching. Then ATTO crashes the system and 1 drive drops out of array. This is a repeatable trouble. Have latest SSD firmware. Secure erased drives, started over, got same results. On similar system using Crucial M4's, this problem does not occur. Any ideas?