If you own such a device, then the first thing you do with it is to upgrade its firmware to NextFW. The Support forum of Fujitsu-Siemens is full of useful How-Tos which help you reach your goal.     After you’ve done that, you may want to enable the rsync daemon . With a running rsync service you can have basically your own private online backup service. This is at least what I tried to achieve. But it is tricky to make it run correctly. Read here about rsync utility and here about rsync daemon (aka rsyncd).   Here is how I configured it so that it works also on Windows: amsadmin# cat /etc/rsyncd.conf lock file = /var/run/rsyncd.lock log file = /var/log/rsyncd.log pid file = /var/run/rsyncd.pid use chroot = no #max verbosity = 1 gid = wheel uid = amsadmin [backup] path = /mnt/home/storage/backup comment = bck export area for storage auth users = amsadmin secrets file = /mnt/.zap/etc/rsyncd.secrets read only = no write only = yes list = yes Make sure you make symlinks to /etc/rsyncd.conf and /etc/rsyncd.secrets.   # ln -s /mnt/.zap/etc/rsync.conf /etc/rsyncd.conf # ln -s /mnt/.zap/etc/rsync.secrets /etc/rsyncd.secrets   The file rsyncd.secrets is a standard plain text file containing something like:…