There are critical differences in cloud storage according to backup size and priority. SMB – including education and small government agencies – primarily require acceptable backup and restore performance plus security and compliance reporting. The enterprise needs these things plus additional solutions for backing up larger data sets across multiple remote sites and/or storage systems and applications.
Note that no one is talking about backing up the corporate data center’s petabyte-sized storage to the cloud, not yet anyway. At its present level of development, online backup is best done for smaller scale systems. But even with this limited approach, it can have real advantages for business backup.
Cloud storage is not a do-all and be-all of data protection but it does have real benefits for some environments. One of its biggest advantages is replacing extensive off-site tape vaults. Tape libraries for active archives and massive on-site backup can be quite valuable in big data environments. But traditional off-site vaults require users to change tapes, label them, track usage, and order the truck to take them to the off-site vault; then go through another multi-step process to recover the tapes. In this respect online backup is far easier and less prone to manual error.