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Examples of Data Deduplication Ratios for File Serving, SQL and Exchange

By Jim Hankins

If you remember back in my  HP Deduplication - Part 1 post when we announced our new deduplication products back in June, I said that the deduplication ratio you can expect from a product can vary based on a number of factors. We now can share with you deduplication test results from our D2D4000 Backup System conducted by a 3rd party, Binary Testing Ltd.

Binary Testing conducted testing that backed up and deduplicated data for file serving, SQL and Exchange environments with various data change rates over a simulated three month backup period. The results can be found here: 

Again, your mileage may vary but this report should give you some idea of what's possible if your business runs these types of applications.

Anonymous | ‎08-09-2008 02:13 AM

HP would be better of without such Reports:

-Very small data samples of 4GB

-Unclear change rates, are these per day, week, month or are they talking about 3 months?

-Unclear what they change, I realy don't understand how/why they are changing X% of Y% of the rows in SQL Server (what does it mean to change X% of a row??)?

-Database without almost no indexes because they didn't want the data layout to change to much!!!! So much for a real world test.

I prefer reports from HP itself instead of these kind of reports.

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