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source? this sounds like an urban myth. there's no way that every single consumer grade hard drive "returns before the flush is done", given that: 1. consumer g
by Hello71 6y ago
source? this sounds like an urban myth. there's no way that every single consumer grade hard drive "returns before the flush is done", given that: 1. consumer grade is not well-defined, 2. there are many different "flush commands", and it does not depend on whether a drive is "consumer grade", and 3. if this were the case, then filesystem and database corruption would be rampant, which it is eminently not.
it would be impossible to write a remotely reliable high-performance database or filesystem if flushing were useless. professionals doing formal analyses like https://www.sqlite.org/psow.html https://www.sqlite.org/psow.html would be a complete waste of time, because everyone would be just praying anyways.
- sandworm101 6y ago>> consumer grade is not well-defined WD has laid out a reasonable standard. Blue/Black/Green are consumer grades. Red is for NAS and Gold is for enterprise.
- kijiki 6y agohttps://brad.livejournal.com/2116715.html https://brad.livejournal.com/2116715.html some enterprise SCSI drives too. This was all back in the late 90's/early 2000's, no idea if it still happens with SATA or SAS drives...
- Hello71 6y agosure, and "consumer" filesystems/databases were also pretty bad. ext3 was only released in 2001, and Windows supported FAT system disk since at least Vista. the "standard" OSS database was MySQL until at least 2010, if not later. I argue 2020 is different though. despite the onslaught of mongodb 'engineers', data reliability is far better than it was in 2000.