Your site will be on one of the fastest most secure networks available, Rackspace, which includes daily and weekly backups. Even in the event of a catastrophe your site can be restored and fully functional in less than an hour!
Of equal importance is external threat security. All CMS platforms can experience security vulnerabilities. To combat this every account is covered by the most powerful security audit software available. Running in depth analysis of literally every single file and script on your server, including images!