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Deduplication has the greatest impact when the deduplication ratio has the lowest value. Here is the formula for the deduplication ratio calculation: Deduplication ratio = Unique data percentage + (1 – Unique data percentage) / Number of machines. This means that:

18.07.2008 · A data deduplication ratio over a particular time period is the number of bytes input to a data ... Comparing ratios is problematic because of the broad set of assumptions implicit in their calculation. The factors that influence space savings will be explored in the next section. Best practice considers .

Is there a way to determine the zfs dedup ratio on a per folder basis? I realize the potential difficulties in computing this as every block ...

26.05.2009 · How are these data deduplication ratios determined? The rate is calculated by taking the total capacity of data to back up (i.e., the data …

May 26, 2009 · The effectiveness of data deduplication is often expressed as a deduplication or reduction ratio, denoting the ratio of protected capacity to the actual physical capacity stored. A 10:1 ratio ...

May 08, 2008 · As a follow up to my two previous posts, Deduplication 101 and Deduplication 201, I am going to put up a deduplication calculator.I am doing so with some (considerable) reservations, because by no means should this be mistaken for a reliable or accurate tool.

19.07.2015 · In my opinion the honest answer is that you can't estimate. There is no good and accurate way to estimate deduplication and compression ratios because there are many variables that will affect the ratio. There are estimation tools available from different vendors but you will get most accurate numbers by testing different solutions with your actual…

15.10.2009 · So determining dedupe ratios is a complex process, and each product takes a different approach to deduplication. But most vendor calculators we looked at asked for just a few pieces of data ...

Veeam Community discussions and solutions for: Calculate Deduplication and Compression ratio of VMware vSphere.

Comparing ratios is problematic because of the broad set of assumptions implicit in their calculation. The factors that influence space savings ...

26.06.2007 · Data deduplication ratios are related to the number of changes occurring to the data. Each percentage increase in data change drops the ratio; the commonly cited 20:1 ratio is based on average data change rates of approximately 5%. Precompressed data Data compression is a key component in every vendor's data-reduction algorithm.

Data deduplication ratios are related to the number of changes occurring to the data. Each percentage increase in data change drops the ratio; ...

The talk will examine the following challenging question: how to predict what data reduction ratio one should ...

The general rule is: the more archival images you store, the lower your deduplication ratio is going to be. Why? Because an archival image ...

30.03.2016 · data deduplication ratio: A data deduplication ratio is the measurement of data's original size versus the data's size after removing redundancy .

Jun 26, 2007 · Data deduplication ratios are related to the number of changes occurring to the data. Each percentage increase in data change drops the ratio; the commonly cited 20:1 ratio is based on average data change rates of approximately 5%. Precompressed data. Data compression is a key component in every vendor's data-reduction algorithm. Vendors base ...

Jul 19, 2015 · Example solution #1 has dedupe ratio of 4 which looks good but solution #2 has dedupe ration 8 with same data. Try to use the same test data during different tests so the results would be comparable. Solutions. Microsoft Windows Server 2012 R2 – built in post-process deduplication engine. Check this page for more information.

There is no good and accurate way to estimate deduplication and compression ratios because there are many variables that will affect the ...

For that 10:1 ratio above, the formula is (1 - (1/10) * 100) to get a value in percent. So, 10:1 deduplication equates to 90% reduction in data stored to ...

Oct 15, 2009 · So determining dedupe ratios is a complex process, and each product takes a different approach to deduplication. But most vendor calculators we looked at asked for just a few pieces of data ...

Type of Data, Percentage of Capacity, Expected Deduplication Ratio. Virtual Server/Desktop. Database Workflow. Email. User Directories.

21.09.2016 · Space Reduction / Data Dedupe Ratios and Percentages. One thing that always gives me pause for thought when dealing with any of the new storage or HCI offerings is the discussion of dedupe or space savings. Some are presented as ratios while others are a percentage. I was recently telling a colleague I was getting 97% dedupe on some VDI ...

08.05.2008 · As a follow up to my two previous posts, Deduplication 101 and Deduplication 201, I am going to put up a deduplication calculator.I am doing so with some (considerable) reservations, because by no means should this be mistaken for a reliable or accurate tool.

11.01.2016 · Having sold HP StoreOnce & Catalyst solutions in a previous role, its fair to say that I've seen dedupe ratios with StoreOnce for VM's of between 24:1 through to in excess of 50:1. Check out the video on youtube.com from Federico Venier from VeeamOn 2015 - his lab tests show a 15:1 dedupe ratio, which is probably a very safe bet.

If you've considered data deduplication products, you may be familiar with the online calculators that purport to show dedupe ratios on the ...

Jul 18, 2008 · Space Reduction Ratios and Percentages . A data deduplication ratio over a particular time period is the number of bytes input to a data deduplication process divided by the number of bytes output. Figure 1 depicts the space reduction ratio relevant in most customer situations which reflects all of the complementary capacity