.. _faq: .. include:: global.rst.inc Frequently asked questions ========================== Which platforms are supported? ------------------------------ Currently Linux and MacOS X are supported. Can I backup VM disk images? ---------------------------- Yes, the :ref:`deduplication ` technique used by |project_name| makes sure only the modified parts of the file are stored. Which file attributes are preserved? ------------------------------------ The following attributes are preserved: * Name * Contents * Time of last modification (nanosecond precision with Python >= 3.3) * User ID of owner * Group ID of owner * Unix Permission * Extended attributes (xattrs) .. Note:: POSIX Access Control Lists (ACL_) are not yet preserved.