You are right, if Dept A has the network infrastructure and able to reach VLAN B for Dept B.
In my case, it is different.
Using your example. SVM A has VLAN A for Dept A, and SVM B has VLAN B for Dept B. both SVM's and VLAN's host own Datastores and yet in respective two seperated Layer-2 and non-routeble networks. I would want to have Dept A to access datastores in SVM B. In this case, I would have to create LIF's in SVM B, and these new LIF's have to be created in VLAN A. Otherwise, Dept A cannot access Dept B's datastores.
So, in this case, there are two data LIF's per node, per SVM. Any thoughts on that?