I need to backup on the Google Storage, files having name with russian characters. Is there any solution? I get this kind of error:
'ascii' codec can't encode characters in position 203-213: ordinal not in range(128)
I assume you're getting this error when trying to upload(copy) your files to the Google Cloud Storage using 'gsutil' tool. 
In order to resolve the issue install UTF-8 version of your Russian font on your computer.
gsutil api google storage nearline