Sandisk PLEASE update/modify your sandisk toolkit to recognise drives in Raid!

http://forums.sandisk.com/t5/SanDisk-Extreme-SSD/SanDisk-Extreme-SSD-Firmware-download-for-MAC-and-Linux-and-PC/td-p/274488

Maybe you should read the stickies before you post a comment?

The normal process simply creates a boot USB anyway, so firmware updates are never done in windows anyway.