I am installing a new Windows 7 on a computer with an ASUS P8Z68-V LX motherboard. I've set the BIOS to raid and I used the Intel Rapid Storage Technology BIOS (entered via CTRL-I) to set my two 4TB SATA drives to RAID-1 (instructions starting on page 16 of http://www.intel.com/content/dam/support/us/en/documents/chipsets/imsm/sb/irst_user_guide.pdf). All seemed well. However, when booting from DVD and installing Windows, it asks me to which volume I want to install and both drives are listed. I expected to see a single, 4TB volume.