Solution : https://service.sap.com/sap/support/notes/785888 (SAP Service marketplace login required)
Key words : 
1     general2     pre-installation3     installation4     post-installation5     high availability date       section   description -----------------------------------------------------------------------01/dec/10    3, \\<sapglobalhost>\sapmnt\<sapsid>\sys\exe\<nuc\uc>\nt<amd64, mirror redo log05/jan/05    2       windows server 2003 standard edition, code page conversion failed             rc = 2the problem, unicode conversion error16/nov/05    5       high availability, symptom sap web application server abap 6, sapinst installation screen abap system > instance directories, s-<digit>11/jul/06    3       application server installation, remember                    command line parameters02/dec/04    3       problems, domain user21/jul/05    2       environment variable path
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