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Data recovery from RAID
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Data recovery from SSD / NVMe
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SSD drives - Solid State Drive
And NVMe drives - Non-Volatile Memory Express.
In addition to all the advantages of SSD drives, such as speed, energy efficiency and the lack of mechanical components, they are also susceptible to failure. The data structure in these devices is much more complex than in the most advanced RAID arrays.
Due to the imperfections of electronic memories, algorithms embedded in the firmware manage their behavior "on the fly" and are responsible for, among others: reading, writing, ECC (error correction), block mapping, encryption, etc. This is why data recovery from SSD media is one of the biggest challenges in the Data Recovery industry.
Unlike traditional magnetic drives, SSD drives usually do not inform the user about problems and data loss is usually unexpected. Apart from logical damage, we encounter two serious damages that prevent access to the contents on the memory chips. These include software and physical damage to the controller or damage to disk electronics components.
Software problems most often arise as a result of too many damaged cells in memory modules, which means that the controller loses access to their contents.
The most popular case of this behavior is a drive recognized by the hardware as SATAFIRM S11, SandForce{200026BB} or Sandisk Milpitas.
To put it simply, in case of problems with the firmware, you need to access the drive in technological mode to repair its firmware, restore it to proper operation and regain access to data.