It is not unusual to find disketts or cartridges stored in steel file cabinets, desk drawers or other non-insulated containers.
Fire protection is a necessity.
Fire files and safes are designed to keep paper records protected in the event of a fire, but not data media. Many business have been through a fire to find the paper records stored in a fire file fine, but the disketts destroyed. The reason is the construction design. Fire files and safes are designed to keep internal temperatures below 350' F which is well below the burning point of paper. Unfortunatly, it happens to be 225' past the point at which the data is destroyed.