Quantum Corp. announced in connection with its previously announced tender offer for its 4.375% Convertible Subordinated Notes due 2010 (CUSIP Nos. 747906 AD 7 and 747906 AE 5), that it is increasing the purchase price pursuant to the tender offer from $700 per $1000 principal amount of Notes to $740 per $1,000 principal amount of Notes. Noteholders who have validly tendered and not properly withdrawn their Notes prior to the expiration date of 5:00 p.m. EDT, on May 12, 2009 (as such date and time may be extended), including noteholders who tendered their Notes prior to today’s announcement, will be eligible to receive the increased purchase price, subject to the terms and conditions of the tender offer.

Quantum also announced today that it is decreasing the aggregate principal amount of Notes it is offering to purchase pursuant to the tender offer from $142 million to $135 million. To the extent that acceptances of all validly tendered Notes would require Quantum to purchase more than $135 million in aggregate principal amount of Notes in the tender offer, Quantum will allocate acceptances on a pro rata basis among the tendering noteholders.

Except for the new terms announced, all terms and conditions of the tender offer remain unchanged. The complete terms and conditions of the tender offer are set forth in an Offer to Purchase, dated March 27, 2009, and the related Letter of Transmittal, each as amended or supplemented from time to time.

Quantum has retained Credit Suisse to act as the dealer manager for the tender offer. Requests for the Offer to Purchase and other documents relating to the tender offer may be directed to Global Bondholder Services Corporation, the information agent.

Neither Quantum, nor any member of its Board of Directors, nor the dealer manager nor the information agent is making any recommendation to noteholders as to whether to tender or refrain from tendering their Notes into the tender offer. Noteholders must decide whether they will tender in the offer and, if so, how many Notes they will tender.

This release is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell the Notes or any other securities. The tender offer is only being made pursuant to the tender offer documents, including the Offer to Purchase and the related Letter of Transmittal that Quantum is distributing to noteholders. The tender offer is not being made to noteholders in any jurisdiction in which the making or acceptance thereof would not be in compliance with the securities, blue sky or other laws of such jurisdiction.