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): October 3, 2005

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

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

|_|  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 October 3,  2005,  Equinix,  Inc.,  a Delaware  Corporation  ("Equinix")
entered into a definitive purchase and sale agreement  ("Agreement") with Trizec
Realty,  LLC, a California limited liability company  ("Seller").  The Agreement
governs the  purchase  by Equinix of an  office/warehouse  complex  known as the
Beaumeade Business Park ("Park") located in Ashburn, Virginia. Equinix purchased
the entire  32.6-acre  Park  containing  six  buildings,  within  three of which
Equinix  is  already a tenant.  The total  rentable  square  feet of the Park is
approximately  461,700  and it is  currently  95% leased.  Equinix  posted a $10
million  deposit  upon  entering  into the  Agreement,  which is  non-refundable
subject to Seller satisfying certain conditions prior to close. The deposit will
be applied  towards  the  purchase  price at  closing.  The  purchase  price was
determined through negotiations between Equinix and Seller, and is approximately
$53 million  dollars to be paid in cash at closing,  which is scheduled to occur
on or before  October 18, 2005.  Equinix  will  continue to operate our existing
data centers within the Park.  Equinix intends to sell those buildings that will
not be used  for our  expansion,  and  will  evaluate  opportunities  to  secure
long-term  financing  on  the  retained   buildings,   either  in  the  form  of
sale-leaseback  or  mortgage  financing  by  year-end.  Other than the  previous
landlord/tenant  status,  there is no material  relationship between Equinix and

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  October 6, 2005,  the  Company  issued a press  release  regarding  the
purchase of the Park  mentioned  above in Item 1.01,  and  discussed  previously
released financial guidance for 2005. A copy of the press release is attached as
Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits

     (c)  Exhibits.

     99.1      Press Release of Equinix,  Inc. dated October 6, 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:  October 6, 2005             By:  /s/  KEITH D. TAYLOR
                                         Keith D. Taylor
                                         Chief Financial Officer