September 12, 2003
301 Velocity Way
Foster City, CA 94404
Re: REGISTRATION STATEMENT ON FORM S-3
Ladies and Gentlemen:
We have examined the Registration Statement on Form S-3 filed by Equinix, Inc. (the Company) with the Securities and Exchange Commission (the Commission) on September 12, 2003 (the Registration Statement), in connection with the registration under the Securities Act of 1933, as amended, of up to 500,000 shares of the Companys Common Stock of certain stockholders of the Company (the Shares). As your counsel in connection with this transaction, we have examined the proceedings taken and are familiar with the proceedings proposed to be taken by you in connection with the sale and issuance of the Shares.
It is our opinion that the Shares are legally and validly issued, fully paid and non-assessable.
We consent to the use of this opinion as an exhibit to the said Registration Statement, and further consent to the use of our name wherever appearing in said Registration Statement, including the prospectus constituting a part thereof, and in any amendment or supplement thereto.
Very truly yours,
/s/ Gunderson Dettmer Stough
Villeneuve Franklin & Hachigian, LLP
GUNDERSON DETTMER STOUGH
VILLENEUVE FRANKLIN & HACHIGIAN, LLP