NFS Server using CX4-120

Hi,

I am new to EMC CX4 series. I have a question in regards to the same.

Can I setup NFS server on CX4-120 system?  coz I was reading some articles and ti was said often that we need to buy a special NS head to achieve the NFS server setup.

Please let me know what needs to be in place when ordering a hardware for CX4-120 to use as NFS server.

Thanks,

ShivD.