This is pretty simple, cause it´s a .msi Installer. Just use
msiexec /i "%~dp0\SysMgmtx64.msi" ADDLOCAL=ALL /quiet /l*v %TEMP%\dell_omsa_7.3.0-x64.log
For more information about msi command line parameters take a look at the following Microsoft Page:
http://technet.microsoft.com/en-us/library/cc759262(v=ws.10).aspx
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