The following is a list of the common replication terms.
clone - A replicated package can be cloned into a mutable project. A clone can be managed like any other project on the system.
full sync or full update - A replication operation that sends the entire contents of a project and some of its shares. The initial sync of a project and/or share is be a full sync.
incremental update - A replication operation that sends only the differences in a project and its shares since the previous update (whether that one was full or incremental).
recovery point objective (RPO) - The maximum tolerable amount of data loss, expressed in unit of time, in the event of a disaster or major outage. The RPO is defined as part of a disaster recovery plan and represents the last consistent set of data that is available for recovery. The lower an RPO value, the less data loss.
replica - Replicated data contained in the replication package on the replication target.
replication action - Describes the data to be replicated, the replication schedule, and data transfer properties such as enabling or disabling encryption of the network link. See Replication Action Properties.
replication group - The set of datasets (exactly one project and some number of shares) that are replicated as a unit. See Project vs. Share Replication.
replication package - Exists on the replication target and is associated with a replication action. It is a special object that contains the replica. A replication package can be exported, cloned, severed, or reversed, which allows for write access to the data within the project.
replication source - An appliance that sends replication updates to one or more target appliances, periodically, continuously, or on demand. Individual appliances can act as both a source and a target, but are only one of these in the context of a particular replication action.
replication target - An appliance that receives and stores data replicated from one or more source appliances. This term also refers to a configuration object on the appliance that enables it to replicate to another appliance.
reverse replication - A replication relationship that exchanges the source and target roles. Following a disaster recovery, roles can be reversed again.