Enter the deduplication ratio or deduplication percentage into the calculator to determine the missing variable.
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Deduplication Formula
The following formula is used to calculate the deduplication percentage for a given deduplication ratio.
P = (1 - (1 / R)) * 100
Variables:
- P is the deduplication percentage
- R is the deduplication ratio
To calculate the deduplication percentage, subtract the reciprocal of the deduplication ratio from 1, and then multiply the result by 100 to convert it to a percentage.
What is Deduplication?
Deduplication is a data compression technique used to eliminate duplicate copies of repeating data. This process improves storage utilization and can also be applied to network data transfers to reduce the number of bytes that must be sent. In the context of data storage, deduplication ensures that only one unique instance of data is retained on storage media, while redundant data is replaced with a reference to the unique data copy. This technique is commonly used in backup and disaster recovery solutions, as well as in primary storage systems to optimize storage efficiency.
How to Calculate Deduplication?
The following steps outline how to calculate the deduplication percentage from the deduplication ratio.
- First, determine the deduplication ratio (R).
- Next, calculate the reciprocal of the deduplication ratio (1 / R).
- Subtract the reciprocal from 1.
- Multiply the result by 100 to convert it to a percentage.
- After inserting the values and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Deduplication Ratio (R) = 4
Deduplication Percentage (P) = ?