Big doors and time-locks are likely to work better. Side-arms to protect computers is just security theater. The only reason I can think of to have armed guard

Big doors and time-locks are likely to work better. Side-arms to protect computers is just security theater. The only reason I can think of to have armed guards at a data center is if the people working there are at a real risk of armed attack, not the computers. edit - also if your site security and uptime is dependent on some people with guns at a datacenter, then you are doing it wrong.