3 ms·

Low latency optane ssd's are incredible for so many reasons - really hope those don't become discontinued as well :( Many here seem to miss how deeply complex

Low latency optane ssd's are incredible for so many reasons - really hope those don't become discontinued as well :( Many here seem to miss how deeply complex SSD's are and how truly different optane is from most consumer and enterprise SSD offerings. Most consumer ssd's only optimize for sequential reads and writes and at that max throughput, not latency for random access. Glossing over a lot of detail, but this is where optane truly shines.

paulmd 4y ago
> Many here seem to miss how deeply complex SSD's are and how truly different optane is from most consumer and enterprise SSD offerings. Most consumer ssd's only optimize for sequential reads and writes and at that max throughput, not latency for random access. Glossing over a lot of detail, but this is where optane truly shines. Yep. Optane was much much closer to an "ideal" block device. There is no block write/page erase mechanism, no garbage collection, no interpolation layer between you and the hardware at all actually. Reads and writes onto a platonic block device. Latency is very low for xpoint so that's fine, on paper. It also means, that for ZFS, it's basically fine even without the battery backup. The xpoint isn't lying to you about a committed write so there's no reason to have a caching layer to manage the physical flash pages, in the way that flash SSDs need backup power for their controllers to flush the cache.