I seem to have figured it out. Here's what I did for anyone with similar problems.
1. Initialised the raid in Windows Disk Management as a GPT 
2. Ran Testdisk again, After a couple seconds of deep scanning a partition showed up that was the right size, however upon stopping the scan it returned ...
					Search found 2 matches
- 02 Dec 2016, 08:22
 - Forum: Partition Recovery
 - Topic: RAID 10 Partition Recovery
 - Replies: 2
 - Views: 2155
 
- 30 Nov 2016, 16:04
 - Forum: Partition Recovery
 - Topic: RAID 10 Partition Recovery
 - Replies: 2
 - Views: 2155
 
RAID 10 Partition Recovery
I have a RAID 10 setup with 4x2tb drives, a couple days ago two of the disk got set to non-raid members and the raid failed. I have followed the following steps.
1) Enter the Ctrl-I configuration utility. Write your raid level, array size, stripe size and everything else that can be configured on ...
					1) Enter the Ctrl-I configuration utility. Write your raid level, array size, stripe size and everything else that can be configured on ...