Abstract: In one embodiment, an apparatus comprises a source system comprising a processing device coupled to memory. The processing device is configured to obtain an IO operation corresponding to an address of the source system. The IO operation comprises first user data. The processing device is further configured to store metadata associated with the IO operation in a first journal barrier of a replication journal of the source system and to close the first journal barrier. The processing device is further configured to determine that the first user data associated with the IO operation is missing from the first journal barrier and to obtain second user data from the address. The processing device is further configured to identify an interval from the first journal barrier to a second journal barrier and to provide the first journal barrier and the interval to a destination system.

Abstract: An apparatus comprises a source system comprising a distribution layer, a management component and a plurality of replication components. The distribution layer is configured to obtain an input-output operation corresponding to an address and to identify a given replication component that corresponds to the address based at least in part on a distribution instance. The distribution layer is configured to assign a first distribution identifier corresponding to the distribution instance to the input-output operation and to provide the input-output operation to the given replication component with the first distribution identifier. The given replication component is configured to obtain a second distribution identifier from the management component and to determine whether or not the first distribution identifier is equal to the second distribution identifier.

Abstract: In one embodiment, an apparatus comprises a source system comprising a processing device coupled to memory. The processing device is configured to obtain an IO operation corresponding to an address of the source system. The IO operation comprises first user data. The processing device is further configured to store metadata associated with the IO operation in a first journal barrier of a replication journal of the source system and to close the first journal barrier. The processing device is further configured to determine that the first user data associated with the IO operation is missing from the first journal barrier and to obtain second user data from the address. The processing device is further configured to identify an interval from the first journal barrier to a second journal barrier and to provide the first journal barrier and the interval to a destination system.

Abstract: An apparatus comprises a source system comprising a distribution layer, a management component and a plurality of replication components. The distribution layer is configured to obtain an input-output operation corresponding to an address and to identify a given replication component that corresponds to the address based at least in part on a distribution instance. The distribution layer is configured to assign a first distribution identifier corresponding to the distribution instance to the input-output operation and to provide the input-output operation to the given replication component with the first distribution identifier. The given distribution component is configured to obtain a second distribution identifier from the management component and to determine whether or not the first distribution identifier is equal to the second distribution identifier.