I guess you're using the onboard ESRT2 RAID. A new drive will not "passthrough" automatically. To use it, create a RAID 0 VD using only that physical drive.
Yes of course there is a tool to configure/manage RAID in Windows. It's call RAID Web Console 2, and it can be downloaded here.
I had downloaded the RAID web console after I posted. The only option I saw there was to create a hot spare with the drive. Creating a striped array makes no sense, even if I had seen it I wouldn't have chosen it, because I would have assumed that I didn't have the required number of disks for a RAID 0.
Pressed for time and results I connected the drive with a USB>SATA adapter and left it at that. Had I known of the onboard controller had such limitations I would have chosen something else entirely.
Thank you very much for your time,