Exhibit 12.1

Digital Realty Trust, Inc.

Statement of Computation of Ratios

 

     Three Months Ended March 31,
     2006    2005

Income before minority interests

   $ 6,918    $ 4,895

Interest

     11,388      8,121

Interest within rental expense

     60      20

Minority interests in consolidated joint ventures

     15      3
             

Earnings available to cover fixed charges

   $ 18,381    $ 13,039

Fixed charges:

     

Interest

   $ 11,388    $ 8,121

Interest within rental expense

     60      20

Capitalized interest

     762      —  
             
     12,210      8,141

Preferred stock dividends

     3,445      1,271
             

Fixed charges and preferred stock dividends

   $ 15,655    $ 9,412

Ratio of earnings to fixed charges

     1.51      1.60

Ratio of earnings to fixed charges and preferred stock dividends

     1.17      1.39