More companies are storing their data in the cloud as part of a hybrid onsite and offsite storage solution, but many admit they are not able to back-up large chunks of their data at all.

Research company Vanson Bourne surveyed 650 IT decision makers across the US, the UK, France, Germany and the Netherlands, which highlighted the way Cloud backup and storage is now seen as a key component of hybrid storage environments. Some 66 percent of those surveyed said they would increase the amount of data they store in the cloud by 2015.

Among those already using hybrid storage systems, improved data security was cited as the reason why 66 percent moved from their old backup and recovery tools to onsite and offsite data protection. Some 57 percent said they preferred such a solution because their rapidly growing business critical data required protection against natural disaster and theft.

But 24 percent of respondents admitted to not telling their CEOs they are not backing up all files, especially those on mobile devices. The survey found 38 percent worried about their data not being saved securely, or whether data had been backed up at all.

A similar survey in in 2011 found that 31 percent of organisations had experienced data loss within the last 12 months - on average twice. In 2012 this has increased to 53 percent experiencing a loss, so the worries seem to be well founded.

Data storage software firm EVault sponsored the survey. Terry Cunningham, president of EVault, highlighted the impact of employees using personal devices at work and how that further impacts their data growth and management issues."

The survey found that a fifth (22 percent) of companies had staff who kept company data on their phones, but that most IT leaders (94 percent) had concerns about the mix of personal and corporate data used by employees on their own mobile devices.

Over two-thirds (67 percent) expressed concerns about the retention and security of their data on mobile devices, and its possible deletion from a mobile device. An additional 57 percent highlighted worries about the legal issues that could stem from the BYOD (bring your own device) trend.