As filed with the Securities and Exchange Commission on March 6, 2006
                                                     Registration No. 333-123468
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                         POST-EFFECTIVE AMENDMENT NO. 1

                                       To

                                    FORM S-8
                        REGISTRATION STATEMENT UNDER THE
                             SECURITIES ACT OF 1933

                             DataMirror Corporation
             (Exact name of Registrant as specified in its charter)

               Ontario                              Not Applicable
   (Jurisdiction of Incorporation)      (I.R.S. Employer Identification No.)

                       3100 Steeles Avenue East, Suite 700
                            Markham, Ontario, Canada
                                     L3R 8T3
                                 (905) 415-0310
   (Address and telephone number of Registrant's principal executive offices)

                    DataMirror Corporation Stock Option Plan
                              (Full title of plan)

                                DataMirror, Inc.
                           1600 Golf Road, Suite 1200
                            Rolling Meadows, IL 60008
                                 (847) 981-5066
            (Name, address and telephone number of agent for service)

                          ----------------------------
                                    Copy to:
                             Riccardo Leofanti, Esq.
                    Skadden, Arps, Slate, Meagher & Flom LLP
                            Suite 1750, P.O. Box 258
                                 222 Bay Street
                        Toronto, Ontario, Canada M5K 1J5
                                 (416) 777-4700



                           TERMINATION OF REGISTRATION

         This Post-Effective Amendment relates to the Registration Statement on
Form S-8 (File No. 333-123468) filed on March 21, 2005, pertaining to the common
shares of the Registrant issuable upon exercise of the options granted under the
DataMirror Corporation Stock Option Plan.

         The undersigned Registrant hereby removes and withdraws from
registration all securities registered pursuant to these Registration Statements
which remain unissued.



                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this
Post-Effective Amendment to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Toronto, Province of Ontario, Canada,
on March 6, 2006.

                                           DATAMIRROR CORPORATION


                                      By:  /s/ Peter F. Cauley
                                           -------------------------------------
                                           Peter F. Cauley
                                           Vice President, Finance and Chief
                                           Financial Officer


         Pursuant to the requirements of the Securities Act of 1933, this
Post-Effective Amendment has been signed below by or on behalf of the following
persons in the capacities indicated, on March 6, 2006.

         Signature                                        Title
         ---------                                        -----

                   *
- --------------------------------
Nigel W. Stokes                        Chairman, President and Chief Executive
                                       Officer (Principal Executive Officer)
/s/ Peter F. Cauley
- --------------------------------
Peter F. Cauley                        Vice President, Finance and Chief
                                       Financial Officer (Principal Financial
                                       Officer and Principal Accounting Officer)

                   *
- --------------------------------
P. Kirk Dixon                          Director

                   *
- --------------------------------
Donald L. Lenz                         Director

                   *
- --------------------------------
Bryan E. Plug                          Director

                   *
- --------------------------------
Keith Powell                           Director

                   *
- --------------------------------
E. Herman Wallenburg Director

                   *
- --------------------------------
Donald Woodley                         Director

* /s/ Peter F. Cauley                  Attorney-in-fact
- --------------------------------
Peter F. Cauley



                            AUTHORIZED REPRESENTATIVE


         Pursuant to the requirements of the Securities Act of 1933, the
undersigned certifies that it is the duly authorized United States
representative of DataMirror Corporation and has duly caused this Post-Effective
Amendment to be signed on behalf of it by the undersigned, thereunto duly
authorized, in the City of Toronto, Province of Ontario, Canada, on March 6,
2006.



                                      DataMirror, Inc.
                                      (Authorized U.S. Representative)


                                      By: /s/ Peter F. Cauley
                                          --------------------------------------
                                          Name:  Peter F. Cauley
                                          Title: Director