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During the data reduction process a hash ID is generated when data is passed through the data reduction hardware. The hash table stores the unique hash IDs that are used for comparison as part of the dedupe process. Hash IDs stored in the table are a unique representation of data in a dedupe relationship. Hash IDs generated by the data reduction hardware and the SHA-256 algorithm for new writes are compared against the IDs already populating the hash table. If a matching hash ID already exists in the hash table, then a dedupe relationship is generated for the newly written data. During the comparison if the hash ID does not exist the table is updated, and that hash ID is added.