Date: Thu, 12 Jul 2007 00:10:52 +0100 From: Feargal Reilly <feargal@fbi.ie> To: NetOpsCenter <noc@hdk5.net> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: Complete hang during boot at boot2 prompt Message-ID: <20070712001052.6fd1c78b@mablung.edhellond.fbi.ie> In-Reply-To: <4695148A.9010200@hdk5.net> References: <20070711182300.4634e278@mablung.edhellond.fbi.ie> <4695148A.9010200@hdk5.net>
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On Wed, 11 Jul 2007 07:34:02 -1000 NetOpsCenter <noc@hdk5.net> wrote: > Feargal Reilly wrote: > > >Hi, > > > >There, I yanked a memory module, and it booted fine, albeit > >complaining about the degraded RAID array. However, when I > >reinserted the memory, it continued to boot. I didn't have the > >foresight to try it before I fiddled with the disks, but I > >can't imagine that it had been seated incorrectly as the > >server had been up for two months without problem. Also, the > >BIOS tests passed, although I know they aren't too in depth. > >I'll run sysutils/memtest anyway, and see what that throws up. > > > >Any other suggestions as to what caused the failure? I know > >I've changed the conditions and may never be able to > >reproduce it (nor do I want to), but if I've failing > >hardware, I'd like a best guess as to where it is. > > > > I have had memory chips walk out of the slots on several > occasions. Sometimes its vibration or in Hawaii we have > humidity issues occasionally that tend to cause this too. > I have learned to spray the sockets and card connections with > contact cleaner about every 6 months to avaid this problem. > Especially in areas where servers are not in a cool > environment. > It was operating in a climate controlled server room, so in theory the sub-optimal, being stacked with three other servers, all without rails, so I guess vibration is one plausible explanation. -fr. -- Feargal Reilly, Chief Techie, FBI. PGP Key: 0xBD252C01 (expires: 2006-11-30) Web: http://www.fbi.ie/ | Tel: +353.14988588 | Fax: +353.14988489 Communications House, 11 Sallymount Avenue, Ranelagh, Dublin 6.
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