A method for providing rapid recovery from a network file server failure through the use of a backup computer system. The backup computer system runs a special mass storage access program that communicates with a mass storage emulator program on the network file server, making the disks (or other...http://www.google.de/patents/US5812748?utm_source=gb-gplus-sharePatent US5812748 - Method for improving recovery performance from hardware and software errors in a fault-tolerant computer system 
