[address]

3^rd February, 2016

Paul Auvil III, Chairman
Quantum Corp
224 Airport Parkway, suite 300
San Jose, CA 95110

Dear Paul,

Following our conversation and my subsequent discussion with the Board this afternoon, I would like to confirm my resignation from the Board of Quantum Corp effective today.

As I mentioned to you and the Board, I am resigning due to my belief in business strategies that are different from those of management and a majority of the Board members, and the practical reality that my own views will not prevail.

On a personal level, I have enjoyed working with you and the Quantum team, despite our differences on business issues.

I wish you and Quantum the very best of success going forward.

Sincerely,

/s/ Philip Black

Philip Black