disaster meaning in Information Science terminology / glossary / dictionary is:
An unexpected event that puts library or archivalcollections at risk of serious damage or destruction, the most catastrophic being fire, flood, and earthquake. Well-prepared libraries have a disaster plan in place for handling various kinds of emergencies. Click here to see the damage to the Hamilton Library caused by the 2004 flood at the University of Hawaii, Manoa. See also: disaster preparedness.