Perhaps even more crucial is teaching staff to back up regularly the kinds of in-house bibliographies, pathfinders, personnel records, and other key items usually built on office desktops. Loss of this data can be even more devastating than losing a week of circulation records. Disasters come in many sizes and shapes. The practice of backup built into the workday is a mighty preventive. So are standard tools like surge protectors and temperature and humidity controls.
Scheduling is a key concept.
Regular maintenance of computer equipment, hardware, software, and files contributes to disaster prevention. It isn't glamorous, but it works. Migration of files and records to upgraded systems also enables a library to keep on top of its data flow. If your server is fried, or drowned, and you are facing the specter of data loss, your backups and procedures may save you. These kinds of questions need to be answered in advance.