Since moving my home server to Snow Leopard, AKA OS X 10.6 I recently bought a drobo to keep all my archives on for relatively fast access. At least faster than searching my archives with CD Finder, then pulling out the appropriate DVD to restore. One thing that I was really excited to use was spotlight on my archives. After setting up my AFP shares to my drobo, I tried searching. I got a big fat nothing. Local or networked, a big fat nothing in the results. I looked in my sharing preferences which had Enable Spotlight Indexing properly checked. Hopefully, if you’re reading this you had this problem too. The solution is simple (at least it was for me).
Make sure that you turn on SMB sharing as well.
Once I enabled SMB on the same drive/folder that was running the AFP share, the spotlight icon lit up instantly to show that it was indexing. Now I have a healthy 1GB index instead of the paltry 1.1MB that works quite well over the network. I guess the question I’m left with is why in the hell do you need to enable SMB, a non apple file format in order to get spotlight to index a network drive?