PROM:A Support for Robust Replication in a Distributed Object Environment

The concept of object can be employed to achieve tolerance to hardware faults in distributed systems.Replication by introducing several copies for each object allows a continuous service even in case of failure.In particular,the paper describes an object model,PROM,which exploits replication by defining sev- eral passive back-up copies for any object.The system automatically recovers any failure of a copy in execu- tion by activating a spare copy and restarting it from a previous checkpoint. The aim of the …