That being said, these are based on averages. Depending on the nature of the data and applications, the industry you are in and other related factors, the change rate may be completely different. In such cases, estimating the change rate must be approached on a per application basis. An example of that would be Patient Medical Imaging data. Existing data is typically static but new images are created daily. The amount of data created daily then becomes the change rate to use.
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