Can I somehow exclude a folder when I compress an archive like this?
$compress = Compress-Archive $DestinationPath $DestinationPath\\ARCHIVE\\archiv-$DateTime.zi
you can use -update option of Compress-Archive. Select your subdirs with Get-ChildItem and Where
like it:
$YourDirToCompress="c:\temp"
$ZipFileResult="C:\temp10\result.zip"
$DirToExclude=@("test", "test1", "test2")
Get-ChildItem $YourDirToCompress -Directory |
where { $_.Name -notin $DirToExclude} |
Compress-Archive -DestinationPath $ZipFileResult -Update