Unified Hash Tables for Aligned and Unaligned Deduplication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional deduplication methods require separate hash tables for aligned and unaligned hashes, leading to inefficient search and storage operations.
Innovation Solution
A unified deduplication process that uses a single hash table to perform both aligned and unaligned deduplication by generating unaligned hash representations and comparing hash offset references to determine the appropriate deduplication operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate hash tables are used for aligned and unaligned hashes, then both aligned and unaligned deduplication operations can be performed, but the system complexity and search time increase due to maintaining and searching multiple hash tables
Solution Approach 1:
The patent combines separate aligned and unaligned hash tables into a single unified hash table. The hash table stores both aligned hash values (for aligned deduplication) and unaligned hash values (for unaligned deduplication) in the same data structure, eliminating the need to maintain and search multiple separate tables. This reduces system complexity while preserving the capability to perform both types of deduplication operations.
Solution Approach 2:
The unified hash table is designed to serve multiple functions: it can perform both aligned deduplication operations (using aligned hash values) and unaligned deduplication operations (using unaligned hash values). The hash table structure and search mechanisms are made universal to handle both operation types, reducing the need for separate specialized structures and improving overall system efficiency.
2Reliability
If separate hash tables are maintained for aligned and unaligned hashes, then comprehensive deduplication coverage is achieved, but the storage space and computational overhead increase
Solution Approach 1:
By merging the aligned and unaligned hash tables into a single unified structure, the patent reduces the total storage space required for hash tables and decreases the computational overhead associated with maintaining and searching multiple separate tables. The unified hash table uses a single data structure and search mechanism, improving efficiency while maintaining comprehensive deduplication coverage for both aligned and unaligned data blocks.
3Adaptability or versatility
If separate hash tables are used for aligned and unaligned deduplication, then both operation types are supported, but the search time and processing speed decrease due to sequential searches
Solution Approach 1:
The patent merges the search operations for aligned and unaligned hashes into a single unified search process within one hash table. Instead of performing sequential searches across multiple separate hash tables, the unified hash table allows for more efficient single-pass or consolidated searches, improving search speed and processing efficiency while still supporting both aligned and unaligned deduplication operations.
Data Source
AI summary
A method, computer program product, and computing system for receiving a user data page for storing in a storage system. An unaligned hash representation of the received user data page may be generated. The generated unaligned hash representation may be identified within a hash table, thus defining an identified hash representation. A user data page associated with the identified hash representation may be identified, thus defining an identified user data page. A hash offset reference of the identified user data page may be compared with a hash offset reference of the received user data page. A deduplication operation may be performed on the received user data page based upon, at least in part, the comparison of the hash offset reference of the identified user data page with the hash offset reference of the received user data page.