Cooper's tip of the moment, ALWAYS backup your Junos configurations. Hate when a customer does not, your router does not have raid (unless it has redundant REs, VC or is in a Chassis Cluster :)). It's a built in feature of Junos so use it! It even allows multiple sites, so if you have DR site with storage - Push it there too!
Here is the conf:
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set system archival configuration transfer-on-commit
set system archival configuration archive-sites "scp://junos@x.x.x.x/data/configs/DEVICE" password "bla"
set system archival configuration archive-sites "scp://junos@y.y.y.y/data/configs/DEVICE" password "bla"
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