Understanding data deduplication ratios SNIA（重复数据删除比率SNIA理解数据）.pdf

Understanding data deduplication ratios June 2008 Mike Dutch Data Management Forum Data Deduplication Space Reduction SIG Co-Chair EMC Senior Technologist Understanding data deduplication ratios Table of Contents Optimizing storage capacity 3 The impact on storage utilization 3 Multiple technologies3 Complementary technologies4 Space Reduction Ratios and Percentages5 Factors that influence space savings 7 Data characteristics and access patterns 7 Operational policies 8 Space reduction technologies 9 Summary12 About the SNIA13 About the Data Protection Initiative 13 About the Author13 List of Tables Table 1. Space Reduction Ratios and Percentages6 Table 2. Data deduplication ratio factors 12 List of Figures Figure 1. Space Reduction Ratio5 Figure 2. Space Reduction Percentages 6 Figure 3. Source data deduplication 10 Figure 4. Target data deduplication with replication10 2 of 13 2008 STORAGE NETWORKING INDUSTRY ASSOCIATION Understanding data deduplication ratios Optimizing storage capacity Data deduplication and other methods of reducing storage consumption play a vital role in affordably managing today’s explosive growth of data. Optimizing the use of storage is part of a broader strategy to provide an efficient information infrastructure that is responsive to dynamic busin