Re: [gentoo-user] Re: problem formatting new 256 GB USB stick : glances at gparted

[Dale <rdalek1967@gmail.com>]

Grant Edwards wrote:
> On 2025-02-20, Frank Steinmetzger <Warp_7@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

Well, I may swap it out with a better brand later.  I tend to update
those backups every month or so.  They don't change a lot.  Should have
stuck with Samsung or whatever, even tho it costs twice as much.  I
could use the Crusial just to move data from one system to another
still.  Should be good for that.

Dale

:-)  :-)