The -append option is not supported.

The -diff option is not supported.

The -atomic option causes a rename of the temporary data, so significantly increases the time to commit work at the end of the operation. Furthermore, as S3A does not offer atomic renames of directories, the -atomic operation doesn't actually deliver what is promised. Avoid using this option.

All -p options, including those to preserve permissions, user and group information, attributes checksums, and replication are ignored.

CRC checking will not be performed, irrespective of the value of the -skipCrc flag.