Data in Nexus365’s OneDrive is recoverable by Microsoft if there is a major disaster, such as one of their datacentres being destroyed. Documents you save to OneDrive keep a history of editing activity meaning that you can easily return to a previous version of a file. However, your OneDrive files are not backed-up to tape in the way that you may be used to. There are some protections against accidental file deletions but if you are concerned that you will always need the ability to fully recover files from backup tapes, particularly after a long period of time, OneDrive will not be a good fit for your needs.