ADIC Advanced Digital Information (MM)

Advanced Digital Information Corporation (Nasdaq:ADIC) announced that at a special meeting of shareholders held today, a majority of shareholders approved the proposed merger of ADIC with Quantum Corporation (NYSE:DSS) announced on May 2, 2006. Quantum has previously announced that subject to such shareholder approval, it expects to close the transaction on Tuesday, August 22, 2006. About ADIC Advanced Digital Information Corporation (Nasdaq:ADIC) is a leading provider of Intelligent Storage(TM) solutions to the open systems marketplace. ADIC is the world's largest supplier of automated tape systems using the drive technologies most often employed for backing up open system, client-server networks.(a) The Company's data management software, storage networking appliances, and disk-based backup and restore solutions provide IT managers innovative tools for storing, managing, and protecting their most valuable digital assets in a variety of disk and tape environments. ADIC storage products are available through a worldwide sales force and a global network of resellers, OEMs and partnerships, including Apple, Dell, EMC, Fujitsu-Siemens, HP, IBM, and Sun. On May 2, 2006, ADIC announced that it entered into an agreement to merge with Quantum Corporation (NYSE:DSS). Further information about ADIC and the proposed merger is available at www.adic.com. (a) Market Share: Gartner Dataquest, Tape Automation Systems Market Shares, 2004, F. Yale, August 2005. ADIC and Scalar are registered trademarks and Intelligent Storage is a trademark of Advanced Digital Information Corporation. All other trade or service marks mentioned in this document should be considered the property of their respective owners. On July 20, 2006, Quantum filed with the SEC a Registration Statement on Form S-4/A containing a definitive Proxy Statement/Prospectus regarding the proposed transaction between Quantum and ADIC. Investors and shareholders are urged to carefully read the Proxy Statement/Prospectus because it contains important information about Quantum, ADIC, the transaction and related matters. The Proxy Statement/Prospectus was mailed to shareholders of ADIC on or about July 21, 2006. The Registration Statement and the Proxy Statement/Prospectus and other relevant materials and any other documents filed by ADIC or Quantum with the SEC may be obtained free of charge at the SEC's website at www.sec.gov. Investors and shareholders may obtain free copies of the documents filed by ADIC with the SEC by contacting Investor Relations, 425-881-8004 or Invest@adic.com, and of the documents filed by Quantum with the SEC from Quantum by contacting Investor Relations at 408-944-4450 or IR@quantum.com. ADIC and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of ADIC in connection with the transaction described herein. Information regarding the special interests of these directors and executive officers in the transaction described herein is included in the Proxy Statement/Prospectus described above.