DOCUMENT:Q313874 11-JAN-2002 [sms] TITLE :SMSINST: SMS Installer Does Not Overwrite Identical Files PRODUCT :Microsoft Systems Management Server PROD/VER::2.0 OPER/SYS: KEYWORDS:kbsms200 smsinst ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Systems Management Server Installer version 2.0 ------------------------------------------------------------------------------- SYMPTOMS ======== SMS Installer may not overwrite a file as you instruct it to if the same file exists on a client computer. CAUSE ===== To alleviate excessive network traffic, a binary comparison is performed instead of simply overwriting the file. MORE INFORMATION ================ SMS Installer performs a binary comparison of the files that are to be replaced. SMS Installer does not replace files that are identical on the client, even if you choose always to overwrite in the script. This decision was made based on the network traffic that occurs when identical files are copied. The binary comparison ensures that files are skipped only if they are identical on the client. If the cyclical redundancy check (CRC) determines that the files are exactly the same, the file is skipped. This cuts down on network traffic and essentially allows installations to continue where they left off after interrupted installations. The end result is exactly the same as in the previous version of SMS Installer in all cases. The only difference is in the text in the log files. Additional query words: prodsms ====================================================================== Keywords : kbsms200 smsinst Technology : kbSMSSearch kbSMSI200 Version : :2.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.