Online storage of files is perhaps the safest way of backing up vital documents. You can get hold of backup services that offer unlimited or limited storage space to customers. So select the unlimited or limited storage space option in accordance with your space requirements. For storing business data it is advised that you utilize the cloud spaces because cloud spaces have more storage capacity. While for personal data you can use the limited storage facility.
Try utilizing the trial pack offered by most of the online backup companies so that you get to know whether secure online backup services are provided by these companies or not. Cloud backup companies even provide storage and backup services for mobile phones nowadays. With the help of cloud storage facilities you can even share large sized files as and when required with the other people.