Exhibit 99 Form 4 Joint Filer Information Name: Global Innovation Manager, LLC Relationship to Issuer: Manager of Global Innovation Partners, LLC Address: 2730 Sand Hill Road, Suite 280 Menlo Park, CA 94025 Designated Filer: Global Innovation Partners, LLC Issuer & Ticker Symbol: Digital Realty Trust, Inc. (DLR) Date of Event Requiring Statement: November 30, 2004 Signature: /s/ Richard Magnuson Date: November 30, 2004 By: Richard Magnuson Title: Executive Managing Director The reporting person directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of the Common Units owned by Global Innovation Partners, LLC and, therefore, a "ten percent holder" hereunder. The reporting person disclaims beneficial ownership of the securities reported herein, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purposes.