The Fastbind feature of FLARE makes luns available immediately upon creation, but the underlying bind operation can take many hours (couple days) to complete depending upon the initial Bind rate defined.  Considering that you are binding 2.5TB SATA luns, that doens't surprise me.  I would suggest running a naviseccli 'getlun' command against the luns in question to see the current 'percent bound' state.
Following the creation of two new LUNs (approx. 2.5 TBytes in size each) in a RAID6 6+2 raid group on Saturday, July 3, we placed them in a storage group that is tied to a production Celerra ns40g. This morning, in Navisphere Manager, I noticed that we have the symbol T (in a circle) on our Celerra Host in the Storage Group. I believe the T is for transitioning. If that is correct, what is it trying to tell us? We ran rescan on the Celerra and picked up the 2 new LUNs on Saturday. Not sure what's happening now. This is running on a CX3-20 with Flare 03.26.020.5.016. Thank you.
storage groups and hosts transitioning