Washington, DC 20549

                                    FORM 8-K

                             Current Report Pursuant
                          to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

       Date of Report (Date of earliest event Reported): September 7, 2005

                                  EQUINIX, INC.
             (Exact Name of Registrant as Specified in its Charter)

    Delaware                       000-31293                   77-0487526
------------------        ---------------------------   ------------------------
(State or Other            (Commission File Number)         (I.R.S. Employer
 Jurisdiction of                                          Identification Number)

                                301 Velocity Way
                          Foster City, California 94404
                                 (650) 513-7000
  (Addresses, including zip code, and telephone numbers, including area code,
                        of principal executive offices)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act 
    (17 CFR 230.425) 

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240.14a-12) 

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
    Act (17 CFR 240.14d-2(b)) 

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
    Act (17 CFR 240.13e-4(c))

Item 1.01. Entry Into A Material Definitive Agreement.

     On September 7, 2005,  Equinix Operating Co., Inc., a Delaware  Corporation
and  wholly-owned  subsidiary  of  Equinix,  Inc.  ("Equinix")  entered  into  a
definitive purchase and sale agreement ("Agreement") with 1920 East Maple LLC, a
Delaware  limited  liability  company  ("Seller").  The  Agreement  governs  the
purchase by Equinix of an  existing,  improved  107,000  square foot data center
located in El Segundo,  California.  The purchase price was  determined  through
negotiations  between Equinix and Seller, and is approximately  $34.5 million to
be paid in cash at closing.  The  transaction  is scheduled to close on or about
September  15,  2005.  Equinix  intends to operate the premises as a data center
consistent with other facilities they currently  maintain.  There is no material
relationship between Equinix and Seller.

Item 2.02. Results of Operations and Financial Condition

     The  information in Item 2.02 of this Current Report is being furnished and
shall not be deemed  "filed" for the  purposes  of Section 18 of the  Securities
Exchange Act of 1934, as amended,  or otherwise  subject to the  liabilities  of
that Section.  The  information in Item 2.02 of this Current Report shall not be
incorporated  by reference  into any  registration  statement or other  document
pursuant to the Securities Act of 1933, as amended, except as shall be expressly
set forth by specific reference in such filing.

     On September 13, 2005,  the Company  issued a press release  confirming our
previously  released  guidance for 2005. A copy of the press release is attached
as Exhibit 99.1.

Item 5.02.  Appointment of Principal Officers

     Renee  F.  Lanam  will  manage  Equinix's  expansion  efforts  and has been
appointed  the Company's  Chief  Development  Officer.  Keith D. Taylor has been
appointed the Company's  Chief  Financial  Officer.  Both of these  appointments
became  effective  September 13, 2005.  Prior to these  appointments,  Ms. Lanam
served as the  Company's  Chief  Financial  Officer and Mr. Taylor served as the
Company's Vice President, Finance and Chief Accounting Officer.

Item 9.01. Financial Statements and Exhibits

       (c) Exhibits.

       99.1  Press Release of Equinix, Inc. dated September 13, 2005, furnished 
             in accordance with Item 2.02 of this Current Report on Form 8-K.


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                          EQUINIX, INC.

DATE:  September 13, 2005                 By: /s/  KEITH D. TAYLOR

                                                   Keith D. Taylor
                                                   Chief Financial Officer