Abstract:
This paper describes replication management
policies in distributed file system, and shows a
decentralized dynamic replication management
mechanism dependent on accessing frequency
detecting named FDRM (Frequency Detecting
Replication Management). In FDRM, in order to
support better system performance and decrease
network traffic, system nodes scan their local
replicas to monitor replicas’ access pattern, and
makes decision independently to add, delete or
migrate replicas. In addition, the scanning interval of
a replica is variable according to the accessing
frequency to that replica, which makes FDRM more
sensitive to the change of system behaviors, so that
one can receive better performance with less system
overhead.
