When a RAID 5 volume with more than four member hard drives is created in the Intel® Rapid Storage Technology option ROM, the volume state does not change from Initialize to Normal.
This is expected behavior. Exit the option ROM user interface and continue to install or boot your operating system (OS).
The option ROM cannot completely initialize a new RAID 5 volume when there are more than four member hard drives. Volume initialization is completed by the RAID driver from within the Windows* OS.
If you are installing a new OS, initialization of the RAID volume will occur during the installation process. If the OS is already installed, initialization will occur when the OS has completed the boot process.