Our data is stored on servers hosted by Rackspace, one of the best hosting providers in the business. Rackspace trades on the New York Stock Exchange (NYSE: RAX) and currently has more than 33,000 business customers. They rock, plain and simple. That’s why we use them.
The software runs on secured servers and your access to your data is secured with the industry standard SSL/TLS encryption. See "Security policy" for more details on this.
Your data is stored at one of Rackspace's datacenters. They have 24 hour surveillance and restricted key card access. The data is then replicated in real-time to an additional server to ensure that your data is available, even when there is a hardware failure. All data is also backed up nightly. Nightly backups are kept on file for two weeks, weekly backups are kept on file for one year, and monthly backups are kept on file for two years.
If you'd like to keep a copy of your data on your own computer, it's an easy thing to do. See "Export data from Buildium"