What OS is this? And that this is not going to be used as a boot array?
And a ICH controller that supports a 2TB+ data volumes support?
So in windows with RST you made a RAID 5 array that is listed over 2TB right?
Ok so you have to redo the partition in disk management by doing the following.
Right click on your disk 1 (left side) and click “convert to GPT disk” if its greyed out click “Convert to dynamic disk” then GPT now you can make a partition more then 2TB and make partitions after 2TB.