SSD data retention highly depends on temperature: write while they’re hot (50C), store/read them cold (20C), for theoretically up to 50 years retention. I’d still keep a checksum, scrub and recover periodically. Rewriting the whole drive every few years might also be beneficial (uses up a rewrite cycle, but should reset the retention period). Under ideal conditions, rewriting periodically every 10 years, theoretically an SSD with 500 R/W cycles could last for thousands of years (the plastic will likely degrade first).
SSD data retention highly depends on temperature: write while they’re hot (50C), store/read them cold (20C), for theoretically up to 50 years retention. I’d still keep a checksum, scrub and recover periodically. Rewriting the whole drive every few years might also be beneficial (uses up a rewrite cycle, but should reset the retention period). Under ideal conditions, rewriting periodically every 10 years, theoretically an SSD with 500 R/W cycles could last for thousands of years (the plastic will likely degrade first).