Quantum completes acquisition of ADIC

NEW DELHI

AUGUST 23, 2006

Quantum Corp. announced the completion of its acquisition of Advanced Digital
Information Corp.

With the close of the acquisition, Quantum will provide customers of all
sizes with a comprehensive range of innovative products and services designed to
meet their current and future data protection and retention needs.

The combination is also expected to expand Quantum's market access,
increase its opportunities for growth and strengthen its financial position.

Under the terms of the definitive agreement announced on May 2, 2006, and
following approval of the transaction by ADIC shareholders last Friday, Quantum
acquired all of ADIC and its outstanding shares for approximately $770 million,
primarily in cash.

Quantum is funding the transaction through a combination of cash on hand and
approximately $500 million in financing from a group of banks and other lending
institutions. The annual interest expense resulting from the financing is
expected to be approximately $50 million.

Quantum expects the transaction to be up to 15 cents accretive on an earnings
per share basis, with the accretion beginning to appear in its financial results
in the March quarter of next year.

As a result of intensive integration planning over the last few months, the
company has identified annualized cost synergies of approximately $75 million to
$80 million, compared to the $45 million it had initially estimated when it
announced the definitive agreement.

Quantum expects to begin realizing the benefit of a significant portion of
these synergies by the end of this calendar year, the majority of the synergy
savings by the end of its fiscal year (March 31, 2007), and the remaining
synergy benefits in the following two quarters after that. The synergies will
reduce both cost of goods sold and operating expenses and primarily be generated
by eliminating redundancies in internal programs, processes and employee
positions, rationalizing facilities, leveraging higher manufacturing volumes to
reduce supply chain costs, and streamlining procurement processes.