CS01-HS

I guess I should mark this solved.

If Windows backs up on the same day every week you could add a user script to unRAID that runs later or the next day.
I just wrote one similar for another device.
 
You may have to tweak it slightly for unraid/your use case. Carefully test it because it calls rm and you don't want to accidentally wipe your array (or at least comment out the rm line until you're sure it works.)
 
#!/bin/bash # # Backup critical files # ## Options # Number of backups to keep NUM_TO_KEEP=6 # directory to be backed up BACKUP_SOURCE="/mnt/hdd/share/unraid" # directory to store backups BACKUP_DEST="/mnt/hdd/share/backup" # Begin backup dest_file="${BACKUP_DEST}/unraid-$(date '+%Y-%m-%d')" echo "Archiving critical files to: ${dest_file}.tar.gz" tar -czf ${dest_file}.tar.gz ${BACKUP_SOURCE} if [[ $? != 0 ]]; then     # Alert     echo "Critical Backup Archiving FAILED"     exit 1 fi # make it readable by all chmod a+r ${dest_file}.tar.gz # Clear out all but X most recent (cd ${BACKUP_DEST}/ && rm `ls -t *.tar.gz | awk "NR>$NUM_TO_KEEP"`) 2>/dev/null # Alert succes echo "Critical Backup Archiving Completed" exit 0