Hi,
onbar needs to work with a storage manager like ISM (Informix Storage Manager) or Veritas Netbackup (among others). Onbar takes care of the link to informix to get the data and the storage manager takes kere of the "where" to put it. You can't have more than one storage manager configured. You can look inside your $ONCONFIG file to see what you have for default (if nothing else is already configured).
Hope this helps.
Luis Torres