On 2025-02-20, Frank Steinmetzger <war...@gmx.de> wrote: > Another thing to consider: don’t put it into the safe for a year without > powering it up. As was explained in a previous mail, QLC uses sixteen > different levels of charge inside one single flash cell. The chance of a bit > flip increases the longer the SSD is powerless and charge slowly (very > slowly) dissipates. It’s hard to find exact numbers, and it’s more of a > statistical question. Could be a research topic for a slow Sunday. ;-) > Also, don’t you live in a hot area? > > I don’t know if an SSD does a re-charge regularly by itself, or whether you > need to actually read out the cells for the controller to notice any issues. > This may be another good research topic.
According to some sources I've read, (at least some) flash controllers do automatic refresh cycles in the background. I've no clue how long a complete device refresh cycle would take for any particular device, or how long between refresh cycles you would want to tolerate. -- Grant
