To ensure fast and efficient MongoDB replica set recovery at the disaster site, it is recommended to provide at least three or more stand-by servers with ActiveDR replicated volumes connected (not mounted). MongoDB binaries should be installed as well. Host names or IP addresses, depending on how the replica set was configured must match the production site configuration. MongoDB version should be the same on all hosts (production and disaster recovery) as well. Furthemore, mongod user ID and group membership should be the same on production and disaster recovery servers to ensure that mongod process has the proper file system permissions.