This is already done on a regular scheduled interval. This occurs every 8 hours, daily and weekly.
::> set advanced
::*> system configuration backup show -node parisi-cdot-01
Node Backup Name Time Size
--------- ----------------------------------------- ------------------ -----
parisi-cdot-01
parisi-cdot.8hour.2013-09-18.02_15_06.7z 09/18 02:15:06 11.07MB
parisi-cdot-01
parisi-cdot.8hour.2013-09-18.10_15_06.7z 09/18 10:15:06 11.02MB
parisi-cdot-01
parisi-cdot.8hour.2013-09-18.18_15_06.7z 09/18 18:15:06 10.95MB
parisi-cdot-01
parisi-cdot.daily.2013-09-17.00_10_02.7z 09/17 00:10:02 10.57MB
parisi-cdot-01
parisi-cdot.daily.2013-09-18.00_10_06.7z 09/18 00:10:06 10.96MB
parisi-cdot-01
parisi-cdot.daily.2013-09-19.00_10_07.7z 09/19 00:10:07 11.27MB
parisi-cdot-01
parisi-cdot.weekly.2013-09-01.00_15_00.7z 09/01 00:15:00 5.16MB
parisi-cdot-01
parisi-cdot.weekly.2013-09-08.00_15_00.7z 09/08 00:15:00 7.53MB
parisi-cdot-01
parisi-cdot.weekly.2013-09-15.00_15_05.7z 09/15 00:15:05 9.93MB
9 entries were displayed.
The schedule is not modifiable. Backups can be offloaded to a remote server:
::*> system configuration backup settings show