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EXHIBIT 99.1

DOT HILL SYSTEMS CORP.

OFFICERS' CERTIFICATE

        Pursuant to Section 906 of the Corporate Fraud Accountability Act of 2002 (18 U.S.C. § 1350, as adopted), James L. Lambert, Chief Executive Officer of Dot Hill Systems Corp. (the "Company"), and Preston Romm, the Chief Financial Officer of the Company, each hereby certify that, to the best of their knowledge:

1.    The Company's Quarterly Report on Form 10-Q for the period ended June 30, 2002, and to which this Certification is attached as Exhibit 99.1 (the "Periodic Report") fully complies with the requirements of section 13(a) or section 15(d) of the Securities Exchange Act of 1934, as amended.

2.    The information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

In Witness Whereof, the undersigned have set their hands hereto as of the 2nd day of August, 2002.

/s/  JAMES L. LAMBERT James L. Lambert
Chief Executive Officer /s/  PRESTON ROMM Preston Romm
Chief Financial Officer

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DOT HILL SYSTEMS CORP. OFFICERS' CERTIFICATE