How does powering on an ssd help keep the data? Can it refresh without causing wear equivalent to a rewrite?
Edit: Apparently erasing is what causes wear, not writing
Posts from the RSS Feed of HackerNews.
The feed sometimes contains ads and posts that have been removed by the mod team at HN.
How does powering on an ssd help keep the data? Can it refresh without causing wear equivalent to a rewrite?
Edit: Apparently erasing is what causes wear, not writing
AFAIK, an ssd uses different amounts of charge per transistor to store a 1 or a 0. An unpowered ssd would seemingly eventually lose that charge signifying the 1 or a 0, and thus lose the information it represented.
Haven't looked into that thoroughly though, so could be totally off base.
Apparently
SSD's endurance rating is calculated based on how long it can store data if left unplugged after a certain amount of data has been written, hence the importance of this testing.
That said I thought it was more of a byte write life for SSDs.