Data recovery from SSD solid state drives is relatively difficult, mainly due to its unique working principle and characteristics.
First, SSDs use flash memory chips as storage media, which is fundamentally different from traditional mechanical hard drives in the way data is written. When writing new data, SSDs need to erase the original data first, a process called "erase cycle". As the number of erases increases, the performance of the flash memory chip will gradually decline, and the reliability of data storage will also be affected, which increases the difficulty of data recovery.
Second, SSDs have the phenomenon of "write amplification". The amount of data actually written may be greater than the amount of data written by the user, which further complicates data recovery. Because the data to be recovered may have been overwritten multiple times or scattered in different physical locations.
Furthermore, in order to improve performance and service life, modern operating systems send TRIM instructions to SSDs. This instruction tells the SSD which data blocks are no longer in use and can be erased. Once the TRIM instruction is executed, the lost data will be permanently erased, making it difficult for data recovery software to find this data.
In addition, many SSDs have encryption functions to protect user data security. When the encrypted data is stored, it will be processed by the encryption algorithm and turned into a string of seemingly meaningless characters. Without the correct encryption key, even professional data recovery software will find it difficult to decrypt and recover the data.
From the perspective of the causes of data loss, data loss caused by soft reasons such as accidental deletion and system failure is relatively easy to recover, while data loss caused by hardware damage, severe physical damage, etc. is more difficult to recover.
In the data recovery process, it is crucial to choose a suitable data recovery software. However, due to the characteristics of SSD and the differences between different brands and models, the compatibility and recovery success rate of data recovery software will also vary.
Data recovery of SSD solid state drives is relatively difficult, but not completely unrecoverable. After data loss, measures should be taken as soon as possible to select appropriate data recovery software for an attempt. At the same time, regular data backup is also an effective means to prevent data loss.
