Each disk should have a unique identifier that you can see by selecting the Host and then going to Configuration > Storage. Click on the Devices View for easiest sorting. Compare that to what you have created. It should show you somewhere in the RAID interface that info.
In the odd chance you can't determine it that way. Try taking one or more of the LUNs offline to see which is which.
That said, make sure that you are not creating too many separate disks. You said this was a single server. I should be a pretty big server to have that many separate disks that are RAID 0 and 1. Otherwise they're likely sharing the same Physical Drives and you might be better served changing that up.
On a side note:
Just yesterday I created a few Datastores for a new SQL server and had planned on making 2 of them 1TB each. I didn't feel matching the IQNs so I just made one 900GB for now.
Hope that all helps.