What are you running? Exchange??

Redundancy is nice, but email back-ups are futile. Backups might save
from most, but not all lost messages after a crash.

Anyway, before we divert to a some other topic, someone please answer
the question for the simplest case - we've already decided that every
RAID controller in the world cannot be trusted:

Now SATA controller - no cache, SATA disk - write-back cache disabled.
FFS mounted 'sync' on it. In most cases, can rename() provide the
quarantee as its man page? By most cases I mean typical usage
day-to-day usage without single-bit or other errors, or hardware going
flaky. I do know errors happen, ok?

Thanks!

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