(Recovery Time Objective) maximum permissible interruption. This technical parameter is the time interval between the moment the data is lost and that when these are available again.
(Recovery Point Objective) maximum amount of data lost. This technical parameter is the time interval between the last data version available and the moment this was lost. It is more commonly referred to as "data freshness". If this interval is zero then no data is lost.
technology which consists in maintaining an exact copy of all data from the source primary storage or a destination storage volume. We distinguish between synchronous and asynchronous technologies, the latter does not wait for the validation of the last write before sending new data. Only the last version of the data is restorable from the target storage pool, this technology is known as Single Point In Time.
