Backup solution equivalent to online backup availability

Customer has been running the SMA-SM environment in production environment.

The need araised to backup the nodes in an online manner.

The request has been caused by the fact  of doing several backups with the environment taken offline, during the day span, will not fit the need.

The manual states clearly that the online snapshot is not a way to make a copy of the node.

Would there be any alternative serving same purpose any of you have been using / are aware of ?