Exhibit 99.1


                                            Contact: Mark Fredrickson, EMC
                                                     508-435-1000 x77137
FOR IMMEDIATE RELEASE                                fredrickson_mark@emc.com


                        EMC ANNOUNCES COMPLETION OF
                         DATA GENERAL ACQUISITION

HOPKINTON, Mass. - October 12, 1999 - EMC Corporation, the world's leading
provider of intelligent enterprise storage systems, software, and services,
today announced the completion of its acquisition of Data General
Corporation.

         Under the terms of the merger agreement, which was announced
August 9, 1999, each share of Data General common stock will be exchanged
for 0.3125 shares of EMC common stock. This exchange ratio is based on the
average share price for EMC common stock during the 20-day trading period
that ended October 1.

         The acquisition of Data General will further strengthen EMC's
market-leading portfolio of intelligent enterprise storage systems,
software and services, through the addition of Data General's CLARiiON line
of midrange storage systems. Data General's AViiON server business will
continue to focus on the UNIX and Windows NT marketplaces, its
industry-leading NUMA (non-uniform memory access) technology, and serving
the needs of its substantial worldwide customer base.

         EMC Corporation, based in Hopkinton, Massachusetts, is the world's
technology and market leader in the rapidly growing market for intelligent
enterprise storage systems, software, networks and services. EMC's products
store, retrieve, manage, protect and share information from all major
computing environments, including UNIX, Windows NT and mainframe platforms.
With 1998 revenues of $3.97 billion, EMC has offices worldwide, trades on
the New York Stock Exchange under the symbol EMC, and is a component of the
S&P 500 Index. For further information about EMC and its storage solutions,
EMC's corporate web site can be accessed at http://www.emc.com .

         This release contains "forward-looking statements" as defined
under the Federal Securities Laws. Actual results could differ materially
from those projected in the forward-looking statements as a result of
certain risk factors, including but not limited to: (i) the operational
integration associated with acquisitions; (ii) delays in the development,
production or acceptance of either company's products; (iii) the transition
to new products; (iv) competitive factors, including but not limited to
pricing pressures, in the computer storage market; (v) the relative and
varying rates of product price and component cost declines; (vi) other
risks associated with acquisitions; and (vii) other one-time events and
other important factors disclosed previously and from time to time in EMC's
filings with the U.S. Securities and Exchange Commission.