Dell EMC NX3240 Network Attached Storage Small and midsized businesses will find the Dell EMC NX3240 to be a powerful, reliable, easy-to-use storage appliance that enables efficient and adaptable data sharing. Based on the R740xd rack server, the NX3240 supports both file (SMB and NFS) and block (iSCSI) protocols, and is easily managed using the Microsoft server management interface (Server Manager) or Dell EMC’s iDRAC9.