What is the difference between inline vs. post-process deduplication?
Inline and post process both are the methods for deduplication. Inline deduplication is a method in which the data is deduplicated before it is written to disk. And, In post process deduplication, the data reduces after it has been stored to disk. Post-process deduplication is mostly used in the backup applications. More
Inline deduplication means the data is deduplicated before it is written to disk (inline). Post-process deduplication analyzes and reduces data after it has been stored to disk. Inline deduplication is the most efficient and economic method of deduplication. Inline deduplication significantly reduces the raw disk capacity needed in the system since the full, not-yet-deduplicated data set is never written to disk. If replication is supported as part of the inline deduplication process, inline also optimizes time-to-DR (disaster recovery) far beyond all other methods as the system does not need to wait to absorb the entire data set and then deduplicate it before it can begin replicating to the remote site. Post-process deduplication technologies wait for the data to land in full on disk before initiating the deduplication process. This approach requires a greater initial capacity overhead than inline solutions. It increases the lag time before deduplication is complete, and by extension,
