You want to make sure that the safe will fit into its designated space, but you also want enough internal space to store your valuables. It can be helpful to have the measurements of the largest item you will place in the safe to get a sense for the minimum dimensions you can accept. Keep in mind that a larger safe does not necessarily insure greater security. Although large safes can not be removed as easily by a burglar, they also cannot be removed by you in case of fire. These materials have special requirements because they are more fragile than paper documents.
Diskettes also require humidity below a certain level.
Due to these requirements, media safes tend to be very expensive, easily costing thousands of dollars. In most cases, a more cost-effective approach is to purchase a separate media chest or media drawer for computer disks. For the greatest level of security, safes should be installed into the wall or the floor. Installation charges will vary according to what is underneath the safe. If placed in concrete, the safes will not only be highly burglar resistant but will also be beyond the reach of most fires.