Of course its possible. i create at the moment a Dell Data Domain and Networker monitoring for a customer.
Its not difficult, but may be a bit complex as you need several points into attention. If you now how to create policies and do some scripting its not a difficult task, but also not done in 5 Minutes.
so as a hint, check if your storage can send SNMP traps (mib2policy is your friend) or better use syslog to get the events to OBM.
What i do at the moment is to active query the Data Domain for performance data and store them in the OA Agent for Dashboards and of course alarming, too. for this you need to do a bit of scripting. You can check if there a already scripts available for other monitoring tools and modify them for OBM.