SH67H3

Q. Why the RAID BIOS and Windows show the incorrect array size when the size is over 2TB?

First, please refer below FAQ to check about large size HDD's limitation:
How to make my large size HDD (over 2TB) to be one partition with Windows operating system?

Second, this problem is Intel RAID ROM too old to support so large size, now the latest RAID ROM version can fix this problem, please download our latest BIOS and flash it to fix it:
SH67H000.115