Rsnapshot is an open source utility that provides incremental back ups.
Install the pacman:package using
# pacman -S rsnapshot
In the install process, the config file is created. It is recommended you make a back up of this file in case you need to reconfigure the file again.
# cp /etc/rsnapshot.conf /etc/rsnapshot.conf.default
The rsnapshot.conf config file is well commented, and much of it should be fairly self-explanatory. For a full reference of all the various options, please consult the rsnapshot man page. Type:
# man rsnapshot
Choose the directory where you want to store the file system back ups, in this case I will store the back ups in /mnt/backups/
# All snapshots will be stored under this root directory. # snapshot_root /mnt/backups