Exhibit 3.1

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

DOT HILL SYSTEMS CORP.

* * * * * * * *

ARTICLE I

The name of the corporation is Dot Hill Systems Corp. (the “Company”).

ARTICLE II

The address of the Company’s registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, Wilmington, New Castle County, Delaware 19801. The name of its registered agent at such address is The Corporation Trust Company.

ARTICLE III

The purpose of the Company is to engage in any lawful act or activity for which corporations may be organized under the Delaware General Corporation Law, as the same exists or as may hereafter be amended from time to time.

ARTICLE IV

This Company is authorized to issue one class of shares to be designated Common Stock. The total number of shares of Common Stock the Company has authority to issue is 1000 with par value of $0.001 per share.

ARTICLE V

In furtherance and not in limitation of the powers conferred by statute, the board of directors of the Company is expressly authorized to make, alter, amend or repeal the bylaws of the Company.

ARTICLE VI

Elections of directors need not be by written ballot unless otherwise provided in the bylaws of the Company.

ARTICLE VII

The liability of the directors for monetary damages shall be eliminated to the fullest extent under applicable law.

To the fullest extent permitted by applicable law, the Company is authorized to provide indemnification of (and advance of expenses to) directors, officers and agents of the Company

(and any other persons to which applicable law permits the Company to provide indemnification) through Bylaw provisions, agreements with such agents or other persons, vote of stockholders or disinterested directors or otherwise in excess of the indemnification and advancement otherwise permitted by such applicable law. If applicable law is amended after approval by the stockholders of this Article VII to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of a director to the Company shall be eliminated or limited to the fullest extent permitted by applicable law as so amended.

Any repeal or modification of this Article VII shall only be prospective and shall not affect the rights or protections or increase the liability of any director under this Article VII in effect at the time of the alleged occurrence of any act or omission to act giving rise to liability or indemnification.

ARTICLE VIII

Except as provided in Article VII above, the Company reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation.

*    *    *    *    *