One of the worst things that can happen to your NEMS deployment is having your SD card fail. So keeping a current backup of your NEMS configuration is a smart idea.
Your NEMS Migrator snapshots are always accessible at http://NEMSIP/backup/ and will automatically generate and send a backup.nems file, which contains all the NEMS configuration settings, logs, data, etc. to allow an easy recovery by restoring to a new NEMS deployment.
Knowing this, it’s easy to add a NEMS backup to your daily backup script.
From your Linux server (where your backups run), simply add this to your backup task:
wget -O "/backup/backup.nems" http://NEMSIP/backup/ --user=YOURUSER --password=YOURPASSWORD
… where /backup/backup.nems is where you want it to output the download, NEMSIP is the actual internal IP address of your NEMS server and YOURUSER and YOURPASSWORD are those you set during nems-init. From there, I recommend you have your backup script run an rdiff-backup of your /backup folder (in this example) to allow for versioning.