Not a missed step lol - CHECK YOUR FIBER FOLKS! My Dell fiber channel SFP+ modules call for multimode fiber. I had a single mode fiber running between my fiber channel switch and the PowerVault. I'm impressed that it detected it once, tbh - but yeah, I found ONE multimode LC fiber laying around and it sees both of my volumes, initialized and good to go I think! Don't worry, if I have any further trouble you'll hear from me. 
Hey all - I guess I'm hitting a bit of a roadblock. I'm unable to see the virtual disks I've configured over fiber channel from my virtualization cluster. I've created a host group containing the three hosts in our virtualization cluster, and each host is (obviously) attached to its respective WWN (I've already configured zoning on the fiber channel switches, with the PowerVault and the virtualization hosts in their own zone). I also added the virtual disks to this host group - but when I try to scan FOR those virtual disks, I don't see any of them.  I'm not sure what I'm doing wrong here?
Can't see virtual disks over fiber channel on Dell PowerVault MD3600f?