DPM 2010 and spaces in names of SQL mdf and ldf files.

For some reason, DPM cannot backup properly SQL Database when there is a space at the beginning or at the end of mdf/ldf file. For example database with mdf file “  BaseA.mdf” won’t be backed up and there won’t be any clear error message just something like “Replica creation failed”. So if you have any problem with SQL backup it’s good to start investigation with checking file names – in my case it was bull’s eye. I have found description of similar problem in DPM 2007, let’s hope that it will be fixed sooner or later.