Humboldt-Universität zu Berlin - Institut für Bibliotheks- und Informations­wissen­schaft

Threats, Defenses and Economics in Digital Preservation - Abstract

Preserved digital content is subject to a broad range of threats, from bit rot, through obsolescence of hardware, software and formats, to external attack, insider abuse and government supression. Probably the most immediate threat to most preservation systems is economic failure. Designers of preservation systems need to be explicit about the threats
they are addressing, how they are addressing these threats, and the effect on system costs.

The talk will review the threat model developed for the LOCKSS (Lots Of Copies Keep Stuff Safe) system, the defenses it uses, and the economic rationale behind them. Building on this experience, the talk will also cover some of the scaling problems that can be expected as we try to preserve larger, petabyte-scale databases such as those one which e-science is increasingly based.