OpenFiler is a great system to implement NAS (Network Attached Storage) in a network using general purpose hardware.
On the ‘Net you can find great tutorial about how to setup with VMWare ESX servers, but it contains one important mistake:
When you define the ACL the netmask for every host is /32 or 255.255.255.255. Using /24 or 255.255.255.0 will prevent connection to OpenFiler.
I’ve tested and found it working with VMWare ESXi 3.5 free server.