I have a project I am working on that entails two linux servers with 50 dumb terminals. One of the linux servers contains all of the applications and data and the other one is used for email and internet connectivity. There are about 100 users total, some of which access these servers remotely. I am trying to get some input on what might be the best backup device and/or software to use for this system and what some of the security risks are that need to be looked at other than the obvious (email virus, etc.) Trying to do an overall plan for this project. If you have any ideas on where to start please help. Thanks.