Hi Casey,
You should explore Active Storage as an option. We have installed Promise before, but since we went for an Active Storage you never go back. It is like switching from PC to Mac, you never look back.
Active has great online support, the units are amazing, the speeds we are getting are great and it is XSAN2 and FCP3 ready, Snow Leopard ready, and the soft is very intuitive and easy to configure and monitor. There is even an iPhone app to monitor the units.
We are based in Argentina, and have installed units in Mexico, Chile, Costa Rica, and some other places, and have not a had any issues.
I strongly recommend you to move to Active Storage. If you need any help contact me, I know some of the guys inside, I can hook you up.
Best.