Hey gais, pretty much the title. So far I was buying HDDs every few years always having a backup, had some drives fail tho. Today I was visiting a local data centre and they are using these cool but expensive high TBW enterprise TLC SSDs, (Samsung, Micron, Kioxia).
I know shiz about data preservation, if I buy one of those, do you think they are going to last longer without failing? If I lets say give them a power up once a while?
But it’s probably still way cheaper to just swap bad sector HDDs.
TBW is a measure of performance/resiliency for drives being written to very frequently.
You use the word “backup” which implies infrequent writing. “Redundancy” is what we call duplication of data that is copied very frequently. Very different application. So how frequent are you making these copies?
In the 20TB range, a few offline HDD are by FAR the most economical backup solution, even in triplicate. As far as reliability, the MTBF of an offline HDD stored properly is vastly greater than the upgrade cycle. Even less of a concern with triplicated backups.