Sun Storage 7000 Simulator 2010.Q1 is available to download from Oracle.
If you want to play with iSCSI/NFS/CIFS.... AND DE-DUPE its a must try simulator.
The simulator is fully functional, just limited on disk space.
* Requires VirtualBox 3.14 (Dropped support for VMware)
More details can be found at. 2010.Q1 simulator : Adam Leventhal's Weblog