Seeking additional funds to accelerate development and increase adoption of its cloud backup service, Backupify has secured a $9 million Series C round, partly from Symantec and existing investors Avalon Venture, General Catalyst Partners and Lowercase Capital.

This means that the company has raised a total of $19.5 million in three years, which will be invested in developing the services it provides for the 5,000+ businesses that use it.

The company also says that it is now protecting more than 300 terabytes of data, including 2 billion emails. Its growth impressed Symantec, leading to a direct investment in its latest funding round.

Backupify has worked quickly to adapt its service to appeal to users of other cloud storage providers, most notably Google Drive. In May, the company announced that in its efforts to add an element of safety to Google Drive, it had updated its platform to support the search giant’s new file-synchronisation service, adding to its already deep coverage of Google’s other products.

Backupify already secured users’ Gmail, Docs, Calendar and Contacts accounts, backing up data so that it could be accessed elsewhere. Its new service allowed users to obtain access to their data if their account was deleted or compromised, doing the same with Google’s Dropbox-esque service.

The company has also integrated Salesforce support into its service, increasing its appeal in the Enterprise sector.

[Image Credit: mwichary]