Exhibit 99.1

MTI Technology Corporation Appoints William Mustard to Board of Directors

    TUSTIN, Calif.--(BUSINESS WIRE)--May 2, 2005--MTI Technology
Corporation (Nasdaq:MTIC), a leading multi-national storage solutions
and services company, today announced the appointment of William
Mustard to its board of directors.
    Mr. Mustard has an extensive background as a senior executive,
with a proven track record in the financial marketplace. He currently
is President and CEO of the Canopy Group, Inc., a technology venture
fund, which seeds, incubates and accelerates emerging technology
companies. Prior to Canopy, Mr. Mustard held a number of positions
with the Stenbeck organization of companies including CFO of Millicom
Inc., an international telecommunications and media group; President
and CEO of Great Universal Inc., a start-up investment holding company
- -- a subsidiary of Millicom International Cellular S.A.; and Managing
Director of SISF, an international professional services organization
providing business risk management, financial investigation and
corporate governance services. Mr. Mustard was also a Managing
Director of Smooth Engine Inc., a growth consulting firm.
    "In joining the MTI board, I am thrilled to be working with a
strong management team at one of the fastest growing companies in
technology today. I look forward to the challenge and opportunity of
helping propel MTI to the next level," explained William Mustard. "As
a major shareholder in MTI, Canopy remains firmly committed to MTI's
growth strategy, and we look forward to continuing our long-term
relationship with the company."
    "We're truly excited to have a seasoned financial executive in
Bill Mustard join the MTI board, bringing with him a strong
entrepreneurial background and tremendous business acumen for building
successful companies," stated Tom Raimondi, Chairman, President and
CEO for MTI. "Moreover, we are pleased to continue the strong
partnership between MTI and Canopy. Bill's knowledge and experience
will be a solid addition to the board and we look forward to working
with him."

    About MTI Technology

    MTI is a leading multi-national provider of professional services
and comprehensive data storage solutions for mid to large-size
organizations. With more than 20 years of expertise as a storage
technology innovator, MTI is uniquely qualified to assess, design,
implement and support whole-office data storage and backup
initiatives. As a strategic partner of EMC (NYSE:EMC), MTI offers the
best data storage, protection and management solutions available
today. By employing a strategic, consultative approach, MTI provides
customers with a single point of contact that eliminates complexities
while delivering operational efficiencies and competitive advantages.
MTI currently serves more than 3,000 customers throughout North
America and Europe. Visit www.mti.com for more information.


    CONTACT: MTI Technology Corp.
             Victor Chynoweth, Investor Relations, 714-481-7828
             vchynoweth@mti.com
             or
             for MTI Technology Corp.
             Jamie Brown, Media Contact, 626-432-4594 x105
             Jamie@independentmktg.com