Permabit, a Cambridge, MA, startup, is bringing software to market that could revolutionize the way organizations store and access data. The software automatically distributes files among computers at different company locations, with just enough duplication to assure business continuity in case of physical disaster. When someone modifies a file, the system resaves only those sections of it that have changed, lowering the demand for transmission bandwidth. The data is encrypted such that it is impossible to trace to its creator-protecting the system administrator from potential legal liability and maintaining user privacy. Designed to provide backup storage as well as management of “live” data, the system will allow companies to dispense with slow and expensive storage tapes. The technology is expected on the market late this summer.