EMC ACQUIRES PATENT PORTFOLIO OF MTI TECHNOLOGY CORP. COVERING KEY
STORAGE-RELATED AREAS

Agreement Valued at $40 Million Over Five Years Plus Shared License
Royalties; Patents Cover RAID, Fault-Tolerant and Network Technologies

HOPKINTON, MASS -- February 12, 1996 -- EMC Corporation, the world's
leading independent provider of intelligent information storage and
retrieval technology, today announced it has signed a definitive agreement
to acquire the patent portfolio of MTI Technology Corp., covering 29 U.S.
patents and non-U.S. counterparts, as well as certain pending
applications, in the areas of RAID (Redundant Arrays of Independent
Disks), fault-tolerant and networking technologies.

Under the agreement, EMC will pay $40 million over five years, and the two
companies will share additional royalties under certain conditions. The
agreement also includes a five-year licensing partnership, providing each
company with non-exclusive licensing right to each other's existing patent
rights, as well as certain future patents.

Michael C. Ruettgers, EMC President and CEO, said, "This agreement covers
some very important, strategic patents, and significantly enhances EMC's
ownership of the core technologies behind the movement, storage and
retrieval of data in today's information systems environments. These
patents have broad applicability to the technologies that will dominate
the future of the worldwide market for information storage systems -- a
growing market that, in total, represents more than $20 billion in annual
sales today. They will help us continue to build on our technology and
market leadership, especially in the rapidly growing open systems storage
market. This is also another step, after our recent acquisition of McDATA
Corporation, in establishing the early lead in the emerging market for
network- attached storage."

Ruettgers continued, "We have always looked for opportunities to acquire
basic patents to augment our own intellectual property portfolio. We
expect the future benefits of this patent portfolio to be far-reaching.
The software and hardware patents we are acquiring from MTI are quite
broad in the areas of RAID, fault-tolerant and network technologies. This
agreement includes patents that pertain to the origins of RAID. We are
exploring all possible avenues to exploit these patents." Steve Hamerslag,
MTI President and CEO, said, "MTI is very enthusiastic about this
agreement with EMC. We have long recognized the value of our patent
portfolio and, with this agreement, we can continue to take advantage of
that value. Further, through the technology-sharing arrangements in this
agreement, we believe we will enhance our leadership position as a
developer and marketer of emerging storage technologies."

MTI Technology Corporation, based in Anaheim, California, is a provider of
high-performance, cross-platform data storage management solutions for the
enterprise. MTI integrates distributed data management software, modular
storage systems and on-site services to meet the mass storage needs of its
customers. The company has offices in the United States, Europe and Canada
and trades on Nasdaq under the symbol MTIC. Further information about MTI
can all be accessed via MTI On-Line, the company's World Wide Web server
on the Internet at: http://www.mti.com.

EMC Corporation, based in Hopkinton, Massachusetts, is a world leader in
enterprise- wide information storage and retrieval technology, designing
systems for mainframe, midrange and open systems environments. The company
has offices worldwide and trades on the New York Stock Exchange under the
symbol EMC. For further information about EMC products and services, visit
EMC's home page at http://www.emc.com.
 
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