Strategies of Object Migration for Object-based Storage System
基于对象的存储系统对象迁移策略

Object-based storage(OBS)is an important storage model for storage systems in the next generation Internet,where object management is one of the key components. In this paper we study an object migration strategy for object-based storage systems that dynamically adjusts the variable-threshold through a feedback model to determine the best OBS device for object migration that minimizes migration times. A Petri-net model is developed to analyze the performance of the proposed strategy. In this analytical model,a migration-controllable model is employed to reduce the complexity of the original Petri-net model. This study provides useful insight into the design of OBS systems and can help to make sensible design decisions.