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.
Does SOS Data Recovery have security certifications?
Yes. Tesweb SA holds the CyberSafe label (awarded by the cyber-safe.ch association after a complete audit), complies with the nLPD (RS 235.1, which came into force on September 1, 2023), and is authorized to process confidential data for federal institutions. The laboratory is equipped with a laminar flow hood certified ISO 5 according to ISO 14644-1 (max. 3,520 particles ≥ 0.5 µm per m³). The premises are secured by cameras, access badges, and an alarm system, with media stored in a safe.
Is it possible to recover data from a physically damaged hard drive?
Yes, data recovery from physically damaged hard drives is our specialty. SOS Data Recovery has an ISO Class 5 certified laminar flow environment according to ISO 14644-1 (max. 3,520 particles ≥ 0.5 µm per m³) allowing us to open and repair media in dust-free conditions. Defective components are replaced using specialized equipment (PC-3000 from ACE Laboratory) before performing a complete bit-by-bit copy of the media.
What certifications do you have?
SOS Data Recovery (Tesweb SA) is CyberSafe certified and a CyberSafe partner by the cyber-safe.ch association after a comprehensive security audit. We are also authorized to process confidential federal data and are Swiss Label certified. Our laboratory operates under a laminar flow hood certified ISO 5 according to the ISO 14644-1 standard.
What certifications does SOS Data Recovery have?
SOS Data Recovery (Tesweb SA) is CyberSafe certified and a CyberSafe partner by the cyber-safe.ch association (complete security audit), authorized for the processing of confidential federal data, Swiss Label certified, and operates an ISO 5 certified laminar flow according to the ISO 14644-1 standard. The company has been active since 2006 and has processed over 11,300 media. Our customers give us a rating of 4.5/5 on Verified Reviews (249+ reviews).
What is an ISO 5 laminar flow?
An ISO 5 laminar flow (formerly Class 100) is a controlled environment in which the air contains a maximum of 100 particles of 0.5 micrometers per cubic foot. This level of purity is essential for handling the internal components of a hard drive without risking contamination.
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.