Data recovery FAQ: answers to your questions
Find answers from our specialists to the most frequently asked questions about data recovery: hard drive failures, SSD, RAID, USB drives, pricing, turnaround times and process. SOS Data Recovery (Tesweb SA), Swiss specialist since 2006 with over 10,000 cases handled, answers your questions.
Why consult our data recovery FAQ?
Our technicians answer the most frequently asked questions about hard drive, SSD, RAID, NAS, USB drive and memory card failures. Each answer is based on over 10,000 cases handled since 2006 and regularly updated. If you cannot find the answer to your question, contact us — free diagnosis within 3 hours.
What is the difference between ISO 5 and other ISO classes?
The ISO 14644-1 classification defines air purity by the maximum number of particles per cubic meter. In ISO 5, the air contains a maximum of 3,520 particles of 0.5 µm/m³. In ISO 7 (a common class in the industry), this figure rises to 352,000 particles — 100 times more. For hard drive data recovery, ISO 5 is the minimum requirement because the read head flies over the platters at only 7 nanometers.