Date: Wed, 18 Jul 2012 06:50:10 +0700 From: Erich Dollansky <erichfreebsdlist@ovitrap.com> To: Andy Young <ayoung@mosaicarchive.com> Cc: freebsd-hardware@freebsd.org Subject: Re: Server memory problems Message-ID: <201207180650.11035.erichfreebsdlist@ovitrap.com> In-Reply-To: <CAHMRaQfrg-TZU1X%2BjNe%2BLj5W_Zg2jK%2BNHD2xSi8x-oSt7AfJRA@mail.gmail.com> References: <CAHMRaQeaKeGhaHOj%2B7RxQPjBs90uuMqNg3ttXKjgT4byP5TBsA@mail.gmail.com> <201207170759.44995.erichfreebsdlist@ovitrap.com> <CAHMRaQfrg-TZU1X%2BjNe%2BLj5W_Zg2jK%2BNHD2xSi8x-oSt7AfJRA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi, On Wednesday 18 July 2012 00:16:33 Andy Young wrote: > > Why would the power supply be suspect since the machine is perfectly stable > with 64 GB of memory in it? > because the machine needs more electricity with the extra modules. If it is at the limits without, it could go behind with the additional modules installed. > The server won't stay up long enough to run memtest. Also when you boot directly into the memory test? You did not answer the question regarding ECC. Did you mix the modules? Put modules back in reversed order. Can you insert modules only into the sockets which seem to fail and leave all other empty? If you can and the machine works then, I assume it is caused by the power supply. If the machine fails then, it is the motherboard. At least it looks like this from distance as you said that it is most unlikely that the modules are faulty. Erich > > Andy > > On Mon, Jul 16, 2012 at 8:59 PM, Erich Dollansky < > erichfreebsdlist@ovitrap.com> wrote: > > > Hi, > > > > On Tuesday 17 July 2012 06:45:18 Andy Young wrote: > > > I am having trouble with one of our servers and I'm not sure what to try > > > next. It has a Supermicro H8DGi-F motherboard with two 16-core AMD > > > processors and two memory banks, one for each processor. When I > > originally > > > built it, I only had one processor and 40 GB of ram. Everything worked > > > awesome. I recently upgraded it, adding another processor and another 40 > > GB > > > of ram. It was incredibly unstable and constantly rebooted within minute > > or > > > two of uptime, sometimes it wouldn't even boot all the way before > > crashing > > > and rebooting again. Seemed like a memory issue so I scaled it back to > > two > > > processors and 32 GB (4x8GB) of ram. Worked well so I added the > > remaining 8 > > > GB sticks I had, bringing it up to 64 GB. Still worked great. The sticks > > I > > > had left were a mix and match variety of 8GB and 4GB sticks. Thinking > > maybe > > > there was some problem with mixing them, I ordered more 8GB memory just > > > like the ones in the box. While waiting for the new memory, the machine > > > performed great with no issues. New memory arrived and I added two more > > 8GB > > > sticks. Immediately the constant crashing returned. It seems really > > > unlikely that I got bad memory in two separate orders. Does anyone have > > any > > > other ideas? Again, its perfectly stable with two processors and 64 GB of > > > memory but goes nuts when I more. > > > > > could it be caused by the power supply? > > > > Did you run a memory test? > > > > If possible, try different power supplies. > > > > > I really appreciate the help!! > > > > > > Motherboard: Supermicro H8DGi-F > > > CPU: 2 x AMD 6274 (2.2 Ghz 16-core) > > > Memory: Kingston 8GB DDR3 1333 > > > > No ECC? > > > > Erich > > > > > > -- > Andrew Young > Mosaic Storage Systems, Inc > http://www.mosaicarchive.com/ > > Follow us on: > Twitter <https://twitter.com/#!/MosaicArchive>, > Facebook<http://www.facebook.com/MosaicArchive>; > , Google Plus<https://plus.google.com/b/102077382489657821832/https://plus.google.com/b/104681960235222388167/104681960235222388167/posts>; > , Pinterest <http://pinterest.com/mosaicarchive/>; >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201207180650.11035.erichfreebsdlist>