We have nightly backups to second hard drive in each server. Although we attempt to make sure your data is safe and take utmost care in everything we do, we still suggest each account holder keep their own backup on their own local drive. We do not guarantee the backups we have to be free from error or claim in every instance to be able to restore your account in full in case of loss of data. Some file extensions are not included in automatic backup. For example we do not backup the backups.
Bottom line is if your data is important to you never leave it in someone else's hands for safe-keeping.
Do not trust us or any hosting company for backups. You must take care of your own data.