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 DLT and SDLT?
SDLT (Super DLT) is the high-capacity evolution of DLT, developed by Quantum. It offers native capacities ranging from 110 GB (SDLT 220) to 300 GB (SDLT 600), compared to a maximum of 40 GB for DLT-IV.
What is the difference between SLR and QIC?
SLR (Scalable Linear Recording) is the evolution of the QIC (Quarter-Inch Cartridge) format. Both use a quarter-inch tape, but SLR offers higher capacities and transfer rates. We recover data from both formats.
What is the difference between a logical and a physical failure?
A logical failure affects the file system or the data itself (accidental deletion, formatting, corruption, virus). The storage device functions normally, but the files are inaccessible. A physical failure affects the hardware components (read/write heads, motor, memory chips, connector). The storage device does not start, makes abnormal noises, or is no longer detected. A physical failure requires intervention in an ISO 5 cleanroom environment.