Emulex (ELX) 10-Q 2003 Q3 Quarterly report

EXHIBIT 99.1

EMULEX CORPORATION

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Quarterly Report of Emulex Corporation (the “Company”) on Form 10-Q for the period ended March 30, 2003, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Paul F. Folino, the Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

     (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ Paul F. Folino

Paul F. Folino
Chief Executive Officer
May 13, 2003

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Quarterly Report of Emulex Corporation (the “Company”) on Form 10-Q for the period ended March 30, 2003, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Michael J. Rockenbach, the Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

     (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

/s/ Michael J. Rockenbach

Michael J. Rockenbach
Chief Financial Officer
May 13, 2003

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