[Fixed]-What is the best way to achieve remote storage for users' files using django

If you can try moving the file storage to Amazon S3 Storage, Django Boto (https://github.com/qnub/django-boto) helps in integration and easy to use. For Better performance i would suggest virtualenv, nginx with uWSGI link:
http://uwsgi-docs.readthedocs.org/en/latest/tutorials/Django_and_nginx.html