**Exhibit 32.1**

**CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002**

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|       | In connection with the Report on Form 10-Q of nStor Technologies, Inc. (the "Company") for the period ended June 30, 2005 as filed with the Securities and Exchange Commission on the date hereof (the "Form 10-Q"), I,Todd Gresham, Chief Executive Officer of the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that: |
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|       |                                                                                                                                                                                                                                                                                                                                                                  | 1. | The Form 10-Q fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
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|       |                                                                                                                                                                                                                                                                                                                                                                  | 2. | The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company. |
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|       |                                                                                                                                                                                                                                                                                                                                                                  |   |   | Date: August 12, 2005 |   | By: /s/ Todd Gresham |
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|       |                                                                                                                                                                                                                                                                                                                                                                  |   |   |   |   | Todd Gresham, Chief Executive Officer |