DFS Replication as Migration Method

I've seen several old posts about DFS Replication and the Isilon but I'm not sure if what I want to do is what is being described.  It's been some time since I've worked with DFS.  The theme I see most is that DFS replication isn't supported by the Isilon, nor by any non-Windows system, but I've seen this work with an NS20 (long time ago) but I wasn't the main admin.

The idea is to take some current shares on another file server and replicate them to new shares on the Isilon using DFS.  We've done this in the past with other storage appliances, and were successful.  Some of our techs prefer this method as they find it non-disruptive.  Adding a folder target is no problem, but when we go set up replication, we have to pick a computer object in AD.  We find our object for the Isilon (was created when I set up the AD authentication provider, has all correct SPN records) but selecting it results in an error about not being able to resolve.

Is this strictly a DNS issue where I request some sort of alias or other record from the AD record name to my SmartConnect zone alias, if that is even possible?  Or is there something deeper to DFS replication that means it truly won't work even if it could resolve?

If a DNS issue alone, what do I request?  Something pointing to the SIP?  Something pointing to my delegated zone for the Isilon?