HOPKINTON, Mass. and ARMONK, N.Y., Feb. 28, 2011/PRNewswire/ -- EMC Corporation and IBM Corporation today announced the extension of a technology licensing agreement that enables customers to install and utilize EMC and IBM products in heterogeneous IBM zEnterprise mainframe server environments. The multi-year agreement facilitates interoperability of EMC(R) Symmetrix(R) DMX and VMAX™ storage systems with IBM Peer-to-Peer Remote Copy and Extended Remote Copy (XRC) functions.