History
2025: SSDs disconnected for years lose data
Solid-state drives (SSDs) can lose data when stored for a long time without connecting to a computer. This is evidenced by the study, the results of which were released in mid-April 2025.
According to Tom's Hardware, during the experiment, blogger HTWingNut used four Leven JS-600 SSD devices with a capacity of 128 GB. These drives are based on the TLC flash memory (three bits of information in a cell). 100 GB of random information was recorded on the device, and all files were provided with a checksum to check the integrity.
The two SSDs in the study were completely new. The other two drives were already under intensive operation: they had 280 TB of overwritten data with the manufacturer's declared resource of 60 TB. All devices were in a state disconnected from the computer (that is, did not receive power) for about two years.
Tests performed after the first year of storage showed that both new and worn SSDs are in good condition, and the files are not damaged. However, the test took a longer time than at the beginning of the experiment. Two years later, damaged files were found on badly worn drives, and their performance fell greatly. On new devices, the number of information blocks restored through the ECC function has significantly increased.
According to HTWingNut, the appearance of errors means that "the SSD-drive fails." Thus, even completely new solid-state devices on which a significant amount of data is recorded, in the absence of power over time, may face the risk of losing information. Another problem, the study showed, is performance degradation.[1]
Notes
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