system_files.tar.gz is part of the d3backup run.
This gzipped file contains some AIX or Linux files to be included as part of the file-save run. The
contents of this file is controlled by the d3backup.conf file:
For example in /etc/d3backup.conf:
Saved System Files: /etc/d3backup.conf /etc/inittab /etc/httpd/conf /usr/lib/pick/pick0
So, this is a quick way to capture some important configuration files within the operating system. This gzipped file is ftp-ed after
the file-save is ftp-ed.
Note: As of this writing, it does not keep archives of this file, just one copy that is overwritten each day on the remote ftp site.
In future versions, it will save daily revisions.