ELVM: A LVM-Based Remote Replication System

Remote replication, also called remote mirror, is the key technology for data disaster tolerance. Replication system can be divided into synchronous and asynchronous mode according to whether the reply from remote server is required. In this paper, a remote replication system based on LVM (Logical Volume Manager) and NBD (Network Block Device) is presented in terms of the user requirements and Linux characteristic. Experimental results show that the system performance is acceptable both on LAN and WAN.