Replication Engine(s) For Preserving Discontiguous And Fragmented Compressed Data Units

A method comprising:

• receiving, by a replication engine, a replication request to replicate one or more data blocks from a source storage system to a destination storage system;
• determining, by the replication engine, a first compressed data extent (CDE) comprising a first subset of data blocks based on the replication request, wherein the first subset of data blocks comprises the one or more data blocks;
• determining, by the replication engine, a transfer map associated with the replication request;
• determining, by the replication engine, that a replication state associated with the one or more data blocks is an unreplicated state based on the transfer map;
• and
• initiating, by the replication engine, replication of the first subset of data blocks of the first CDE in compressed form from the source storage system to the destination storage system based on the replication of the one or more data blocks, regardless of the replication state of the other data blocks in the first CDE.

A non-transitory computer-readable storage medium comprising processor-executable instructions configured to cause one or more processors to:

• receive, by a replication engine, a replication request to replicate one or more data blocks from a source storage system to a destination storage system during a transfer process, wherein the one or more data blocks are compressed in a first compressed data extent (CDE);
• determine, by the replication engine, a transfer map associated with the transfer process;
• determine, by the replication engine, that a replication state associated with the one or more data blocks is an unreplicated state based on the transfer map;
• and
• initiate, by the replication engine, alterations to the replication of the first CDE in compressed form from the source storage system to the destination storage system based on the replication state associated with the one or more data blocks, regardless of the replication state of the other data blocks in the first CDE.