1 Feb
2023
1 Feb
'23
5 a.m.
On 1/31/23 20:16, Ali via cctalk wrote:
If I remember Spinrite would read and write each
sector back in Level I or
II and gave you a constant update.... I still have a license from long
ago.... I think the last version came out in early 2000s...
If you look at the specs for SSDs or any flash medium for that matter,
they're rated in terms of *write* cycles, which is why you don't want to
abuse that.
However, it may well be that writing is the only way to refresh cells,
as reading won't, if I understand flash operation correctly. But
rewriting a sector or block of a file doesn't usually write back to the
original, because of the write-leveling firmware in the drive.
JEDEC requires data retention of a consumer drive for at least 1 year,
which doesn't sound like much; real retention is probably much longer.
You can write a script that write-refreshes every file on the drive.
The easiest thing is to buy a second drive and ping-pong the data
between them periodically. That way, if one fails, you still have the
other for backup.
FWIW,
Chuck