Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-137397, 333-119271, 333-118090, 333-104685, 333-52512, 333-92173, 333-77321 and 333-14241) of Adaptec, Inc. of our report dated May 27, 2010 relating to the consolidated financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

San Jose, California

May 27, 2010