Your new HDD is in 512e format: 4096b physical sector size, 512b logical emulated. While RAID HDDs was in 512 format: 512b physical sector size. 512 logical. You cannot mix in RAID arrays disks with different formats. Read the detailed specs of HDDs in store, you need a 512 format one, not 512e or 4K native.
Hmm, I don't have the funds to get yet another HDD. With me running off of the recovery right now, what would happen if I uninstall IRST? Would that make the recovery drive the Master drive? Or maybe I uninstall IRST & then have to change the recovery to the Master in the BIOS? I've thought about just doing a fresh install of Windows 7 on my new HDD, but my Acer recovery discs aren't working unless I have the recovery drive hooked up, but I would want to make sure it's on the new drive....