BetterHost has three methods in place on web servers. Raid 5 arrays on most machines to guard against drive failures. A simple drive on the machines for storage of complete backups. Also remote backup software which copies the data to a different location outside the datacenter the web server is located. Though we try to protect everyone every way possible. We also request developers keep a local copy of files as well. This should make certain that all data is protected one way or another.