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yuboyt | 1 year ago

You're missing the point. GP was mentioning the common assumption that all systems in the last 30 years are sector-atomic under power loss condition. Either the sector is fully written or fully not written. Optane was a rare counter example, where sector can become partially written, thus not sector-atomic.

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x1f604|1 year ago

It is not rare for flash storage devices to lose data on power loss, even data that is FLUSH'd. See https://news.ycombinator.com/item?id=38371307

There are known cases where power loss during a write can corrupt previously written data (data at rest). This is not some rare occurrence. This is why enterprise flash storage devices have power loss protection.

See also: https://serverfault.com/questions/923971/is-there-a-way-to-p...

namibj|1 year ago

I wish someone would sell an SSD that was at most a firmware update away between regular NVMe drive and ZNS NVMe drive. The latter just doesn't leave much room for the firmware to be clever and just swallow data.

Maybe also add a pSLC formatting mode for a namespace so one can be explicit about that capability...

It just has to be a drive that's useable as a generic gaming SSD so people can just buy it and have casual fun with it, like they did with Nvidia GTX GPUs and CUDA.