On Thu, Mar 12, 2015 at 10:10 PM, Matthew Dillon <[email protected]> wrote: > Not necessarily. Data degradation is a natural process so it depends what > the controller decides to do with it. It will probably reallocate the block > and bump the Reallocated_Event_Count counter in the smart status, but that > doesn't mean that the SSD is going bad. If the counter starts increasing > regularly though that could be an indication of future problems brewing. > > The biggest indicator of problems is the Offline_Uncorrectable counter... > that means data went bad that the SSD controller couldn't recover. Flash > wear characteristics are such that controllers are supposed to be able to > detect and rewrite weak data before it actually goes bad so if data does > actually go bad it's probably a good idea to replace the SSD.
Sounds like an SSD will take better care of write-once data compared to a spinning disk. > On Thu, Mar 12, 2015 at 2:00 PM, Carsten Mattner <[email protected]> > wrote: >> >> On Thu, Mar 12, 2015 at 9:42 PM, Matthew Dillon >> <[email protected]> wrote: >> > When left powered, SSDs do internal scans and will slowly fix up >> > cells >> > before the data becomes unrecoverable. >> >> Does that mean those cells are marked dead? > >
