EXHIBIT 5


March 30, 2001


Equinix Inc.
2450 Bayshore Parkway
Mountain View, CA 94043

          Re:      Equinix Inc. Registration Statement
                   for 5,268,731 in Shares of Common Stock

Ladies and Gentlemen:

  We refer to your registration on Form S-8 (the "Registration Statement") under
the Securities Act of 1933, as amended, of (i) 4,618,731 shares of Common Stock
under the 2000 Equity Incentive Plan, (ii) 50,000 shares of Common Stock under
the 2000 Director Option Plan, and (iii) 600,000 shares of Common Stock under
the Employee Stock Purchase Plan.  We advise you that, in our opinion, when such
shares have been issued and sold pursuant to the applicable provisions of the
2000 Equity Incentive Plan, the 2000 Director Option Plan, and the Employee
Stock Purchase Plan, and in accordance with the Registration Statement, such
shares will be validly issued, fully paid and nonassessable shares of the
Company's Common Stock.

  We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement.

                                 Very truly yours,



                                 /s/ Renee Lanam

                                 Renee Lanam
                                 General Counsel