I have a 3.46 TB Raid disk array, but when I setup windows server 2012, it only refers to it as 2TB

I have a 3.46 tb raid disk array, but in volumes it shows it only as 2.00TB

What have I done wrong, and how can I fix it? Thanks Noam

You must use a GPT partition table for windows to use disks over 2TB. You've likely configured it as MBR.

You're using MBR, which supports a max of a 2 TB partition. Either make a new partition for the remaining space, or start all over again with a GPT partition.

http://msdn.microsoft.com/en-us/library/windows/hardware/gg463525.aspx

Did you format the disk to use GPT and not the MBR cause to use disk with more than 2To you have to use GPT as MBR is limited to 2To.