On 15 oct. 2012, at 11:58, Peter Jeremy wrote: > This _does_ sound more like hardware than software
I do agree with that. > Have you tried replacing RAM & PSU? I, too, was about to suggest a test or replacement of the PSU. Also, I've had a (quite) similar problem years ago (no raid, no zfs, older freebsd…) where HDD would detach or be lost by the system on a random basis. I search a long time of the software side, but it was cured by a firmware update on HDDs. good luck with this issue. Patrick
