CUPERTINO, Calif. & LONGMONT, Colo.--(BUSINESS WIRE)--Seagate Technology plc (NASDAQ:STX), a world leader in storage solutions, and Dot Hill Systems Corp. (NASDAQ: HILL), a trusted supplier of innovative software and hardware storage systems, today announced that they have entered into a definitive agreement under which a wholly-owned indirect subsidiary of Seagate will commence a tender offer for all of the outstanding shares of Dot Hill in an all-cash transaction valued at $9.75 per share, or