Was the replacement RAM you used absolutely identical down to the part numbers and number of sticks inserted? I had a very bizarre problem a year or two ago with similar behaviour in non-Dell hardware and it turned out to be the mainboard. The system would lock up in certain scenarios, however swap the RAM out (four sticks down to two, lower FSB) and it was perfectly stable. The original RAM in an identical mainboard in a different system was also stable. I put it down to VRM/power issues on the board, and a replacement mainboard solved the problem.
Just a thought.. Richard -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Henrik Schmiediche Posted At: 03 February 2010 16:33 Posted To: Hostmaster Conversation: PowerEdge 1950 ECC question... Subject: RE: PowerEdge 1950 ECC question... Did that. The system is up using new RAM and OMSA and related utilities are running. There are no memory related entries in the ESM log. Old ram freezes system, but no error of any kind is generated in ESM, memtest, mpmemory, dell diags. -Henrik -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tino Schwarze Sent: Wednesday, February 03, 2010 10:30 AM To: [email protected]; [email protected] Subject: Re: PowerEdge 1950 ECC question... On Wed, Feb 03, 2010 at 10:21:10AM -0600, Henrik Schmiediche wrote: > I cannot get the node to startup to the point where OMSA runs. It freezes on > startup with the bad RAM. Just take out all RAM (and note which DIMM was in which slot), insert known-good RAM; then have a look at the ESM log. It will tell you where the errors occured (exact DIMM location). Then move all other RAM in, and perform a extensive memory test. HTH, Tino. > - Henrik > > -----Original Message----- > From: Ryan Miller [mailto:[email protected]] > Sent: Wednesday, February 03, 2010 10:19 AM > To: Henrik Schmiediche; [email protected] > Subject: RE: PowerEdge 1950 ECC question... > > Are you running OMSA? It usually is able to pinpoint which stick is the > cause of single bit errors. It can be helpful to stress the RAM with some > heavy compiles/DMA to make the bad stick throw an SBE sooner. > > > -----Original Message----- > > From: [email protected] [mailto:linux-poweredge- > > [email protected]] On Behalf Of Henrik Schmiediche > > Sent: Wednesday, February 03, 2010 11:09 AM > > To: [email protected] > > Subject: PowerEdge 1950 ECC question... > > > > Hello, > > Is it possible to turn ECC off on the PowerEdge 1950? I have servers > > from > > other manufacturer where this is possible, but I cannot find this > > option in > > the PE 1950. I'd like to test the memory with ECC turned off. > > > > Here is Background: > > > > I have a PowerEdge 1950 (one of over 100+ identical systems) that > > freezes on > > startup. I can reimage the node fine, the freeze on startup persists. > > The > > node passes Dell Diagnostics including overnight memory testing. > > Nothing in > > the ESM log. > > > > I reseated the RAM and other components. No solution. > > > > On a lark I decided to change all 8 memory sticks.. this solved the > > problem! > > The system starts up fine. > > > > So it seems there is a bad memory module, but I have no idea which > > ones. I > > am trying to avoid the one-by-one (or batch-by-batch) testing method > > and I > > was thinking that (maybe) turning ECC off might help locate the bad > > module. > > > > Any ideas? > > > > - Henrik > > > > > > _______________________________________________ > > Linux-PowerEdge mailing list > > [email protected] > > https://lists.us.dell.com/mailman/listinfo/linux-poweredge > > Please read the FAQ at http://lists.us.dell.com/faq > > _______________________________________________ > Linux-PowerEdge mailing list > [email protected] > https://lists.us.dell.com/mailman/listinfo/linux-poweredge > Please read the FAQ at http://lists.us.dell.com/faq -- "What we nourish flourishes." - "Was wir nähren erblüht." www.lichtkreis-chemnitz.de www.tisc.de _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq All E-Mail communications are monitored in addition to being content checked for malicious codes or viruses. The success of scanning products is not guaranteed, therefore the recipient(s) should carry out any checks that they believe to be appropriate in this respect. This message (including any attachments and/or related materials) is confidential to and is the property of Computer Service Centre, unless otherwise noted. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. Any views or opinions presented are solely those of the author and do not necessarily represent those of Computer Service Centre. _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
