Optical Data Archiving at the United Nations
You have come into possession of some of the world’s most important documents - 43,000 of them to be exact. Each one of them must be fully protected, their integrity guaranteed, and they must be 100 percent reliable against loss or destruction. Failure to shield even a single crucial document could cause worldwide havoc - even war. Your mission, should you choose to accept it, is to find a way to safeguard these documents, shield them from unauthorized alterations, yet make each one easily available to anyone requesting them.
Sound like a fantastic movie plot? Or perhaps the making of a great mystery novel? Well, it’s a real-world dilemma faced by the United Nations - custodian of all the world’s treaties. Dating back to 1947 when the organization was known as the League of Nations, the UN has stored more than a half-million pages of agreements between countries, divided into 1,600 volumes. These original papers are stored in its New York City headquarters. The paper documents, with the signing parties signatures affixed, each written in a number of languages, form the framework of accords among nations.
The UN embarked on an ambitious project to convert each page of every document into electronic media - making them available outside of the UN’s walls to Internet users and others who’d like to see them, without posing a risk to the documents.
Ron Van Note, an information systems consultant known for his work in the re-engineering workflow arena, oversees this undertaking at the UN. “After much reflection and many discussions, we decided to go with imaging and optical storage as the best alternatives for this enormous conversion task,” recalls Van Note. “With this combination of technology we can ensure the integrity of each document both during the electronic input process and afterward during the storage stage.”
Imaging vs. OCR
Van Note’s rational for selecting the imaging format over digital Optical Character Recognition was based on both cost and legal ramifications. Van Note explains that OCR, at best, is considered to be only 90- to 95-percent accurate. Because of the multiple languages used throughout the treaties, it would cost the world body millions to ensure the necessary 100-percent accuracy. During the conversion from paper to electronic media, the UN has to protect against adding something that is not there, or leaving anything out during translation.
Optical storage was chosen because of its immense capacities, permanency, and near-online storage capability. “A treaty is not a document that ever changes,” explains Van Note. “It will be stored forever. It can be modified by adding on to it, but the original is never touched. Optical’s permanency and large capacities are ideal for this type of data archiving. In the future, the UN will be putting the documents out over the Internet. It is essential to get the treaties into a form that can’t be damaged. Again, optical’s write-once feature meets our needs.
“The first phase of the UN’s conversion project has already been completed,” says Van Note. “It involved scanning all 1,600 existing volumes of treaties (about 600,000 pages) and storing them on the optical media. A Hewlett-Packard SureStore Optical 20XT jukebox with 16 five-and-a-quarter-inch disk platters were initially used. The jukebox is an magneto-optical device and WORM media was used to protect the documents against erasure or alteration.



