Data recovery companies offer a variety of products and services, but they are not as good for your needs. Do not just accept what the company says about the success rate of data recovery. If the company says they have a success rate of 100%, that in itself is cause for concern about them.
In the best of circumstances, about 60 to 75% of all hard drive data can be restored. You need to figure out how to deal with the fact that the company and can give you all the backups and security you need.
You need to hire a qualified and certified data recovery company to restore your lost data. You can also look for a professional and qualified data recovery specialist for your needs.
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Each rank is lower than it means that you are taking a risk with your data in the recovery process. A dust particle can destroy the data, so companies without a certified is a false economy that could end up being a very costly mistake.
The data recovery company you choose should be certified. The particles of dust or fingerprints smallest is a threat to your data. If the recovery of data is done in a room that is not properly certified, your data may be corrupted.
If you choose a company with a lower rank, you take unnecessary risks with your data. You will need to investigate the ability of the mechanical repair company you are considering.