Flash Storage Fingerprint Collision Handling for Deduplicated Writes

The patent introduces a buffer layer between the host and storage drives that acts as an intermediary for write operations. This buffer receives write commands, performs deduplication operations, and manages fingerprint collision resolution without requiring immediate write operations to the storage drives, thereby improving reliability by eliminating unnecessary writes while maintaining write operation efficiency

The system performs preliminary deduplication operations in the buffer before data is written to storage drives. By calculating fingerprints and detecting duplicates in advance, the system prevents unnecessary write operations from occurring, thus improving both reliability and write operation efficiency

The buffer performs preliminary deduplication operations before data reaches the storage drives, calculating fingerprints and identifying duplicates in advance. This preliminary action enables comprehensive deduplication to be achieved without adding latency to the critical write path, as the deduplication work is completed beforehand in the buffer layer

The buffer layer autonomously performs deduplication operations using its own processing capabilities and fingerprint calculation mechanisms. By self-serving the deduplication function without requiring additional processing steps in the main data path, the system achieves comprehensive deduplication while minimizing latency impact