Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Smith Stephen M
   2. Issuer Name and Ticker or Trading Symbol
EQUINIX INC [EQIX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO & President
(Last)
(First)
(Middle)
ONE LAGOON DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
02/16/2011
(Street)

REDWOOD CITY, CA 94065		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/17/2011   M   20,718 A $ 0 66,434 D  
Common Stock 02/18/2011   S(1)   9,686 D $ 91.2664 (2) (3) 56,748 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units $ 0 02/16/2011   A   41,436     (4)   (5) Common Stock 41,436 $ 0 41,436 D  
Restricted Stock Units $ 0 02/17/2011   M     20,718   (4)   (5) Common Stock 20,718 $ 0 20,718 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Smith Stephen M
ONE LAGOON DRIVE
REDWOOD CITY, CA 94065		   X     CEO & President  

Signatures

 Darrin B. Short, Attorney-in-Fact   02/18/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Shares sold pursuant to a 10b5-1 Trading Plan.
(2) The average price of $91.2664 consists of the following blocks of shares: 100 shares sold at $90.67, 100 at $90.72, 108 at $90.74, 100 at $90.75, 300 at $90.77, 10 at $90.78, 100 at $90.7855, 300 at $90.79, 300 at $90.81, 100 at $90.82, 100 at $90.83, 100 at $90.85, 100 at $90.86, 100 at $90.87, 210 at $90.88, 100 at $90.89, 100 at $90.90, 200 at $90.91, 200 at $90.92, 100 at $90.93, 87 at $90.96, 245 at $90.97, 100 at $90.99, 200 at $91.00, 100 at $91.10, 100 at $91.11, 100 at $91.13, 100 at $91.15, 100 at $91.19, 17 at $91.20, 100 at $91.21, 100 at $91.24, 100 at $91.25, 100 at $91.26, 100 at $91.27, 200 at $91.28, 200 at $91.29, 100 at $91.30, 100 at $91.322, 100 at $91.33, 100 at $91.34, 100 at $91.38, 100 at $91.40, 300 at $91.42, 100 at $91.43, 200 at $91.44, 100 at $91.45, 100 at $91.46, 9 at $91.47, 100 at $91.48, 100 at $91.51, 200 at $91.52, 200 at $91.54, 100 at $91.545, 100 at $91.55, 100 at $91.56, 100 at $91.57.
(3) Additional blocks of shares were 200 at $91.58, 200 at $91.59, 300 at $91.60, 100 at $91.62, 100 at $91.63, 300 at $91.64, 50 at $91.645, 50 at $91.65, 100 at $91.68, 100 at $91.70, 200 at $91.73, 100 at $91.74, 100 at $91.81, 100 at $91.82, 100 at $91.84, 100 at $91.91, 100 at $91.93 and 100 at $91.97.
(4) On March 15, 2010, the reporting person was granted performance restricted stock units, the vesting of which was subject to both continued service and the attainment of certain revenue and EBITDA targets for 2010. These targets were achieved at the rate of 110.5% out of a possible 120%, therefore 50% of the achievement level of the award vested on 2/17/2011, with 25% additional units of the achievement level of the award scheduled to vest on each of February 15, 2012 and February 15, 2013, subject solely to continued service.
(5) Restricted stock unit award expires upon reporting person's termination of employment.

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