We can't stress this enough, if you don't have backups you risk losing everything and having to start over from scratch with no music, imaging, or commercials.
The best way to backup is with an external USB drive.
Copy the JBData, JBMusic, and JBCoverart (if you have one) to the USB Drive.
You should make notes or take screenshots of the settings in all On Air and Production machines to configure the new machines with the same settings.
You should also schedule regular backups. Best practice is to do multiple backups and keep a backup offsite.
If the studio location takes a lighting hit, an external hard drive kept in a safe somewhere can save months of work.
If you also keep a copy in the studio location, don't leave the external drive connected for lightning reasons.
After a backup, you should browse the external drive and make sure everything is there.
Remember this is your product and the more recent a backup is, the fewer missing files you will have should disaster strike.
Multiple backups give you added security
Other reasons for backup:
Hardware failure: even the best hardware can and will fail eventually.
User error/malfeasance: files can be accidentally deleted and disgruntled employees can make accidents happen.