I have three Drobo Pro’s and I found the following technical support article, that states that you need need to open ports 5000 and 1024-65536. Drobo Dashboard connects to port 5000 and then randomly picks a port in the range for broadcasting.
Is the port TCP, UDP or both? The technical support article doesn’t say.
If I am using iSCSI with a Drobo Pro and it is a self-assigned IP address (i.e. 169.254.4.160) what IP address group would it be assigned in Mac OS X Server (i) Any, (ii) 10-net, or (iii) 192.168-net?