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SubjectRe: Hyper-Threading Vulnerability
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> > They turned it off by default, which according to disk vendors
> > lowers the MTBF of your disk to a fraction of the original value.
> >
> > I bet the total amount of valuable data lost for FreeBSD users because
> > of broken disks is much much bigger than what they gained from not losing
> > in the rather hard to hit power off cases.
>
> Aren't I/O barriers a way to safely use write cache?

yes they are. However of course they also decrease the mtbf somewhat,
although less so than entirely disabling the cache....

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