OK, good point and I apologize for seeming rough, though the phrase "flying blind" is not an really an insult. Your post sounded a bit like someone who hasn't dealt with servers much. The typical answers for something like this are "read the manuals", and "call support to get a replacement if you have bad hardware". As you have over 100 Dell servers there's a high likelihood that you got a few bad ones, so I would just replace it and move on. There's really not much else to do. On Wed, Jan 5, 2011 at 11:43 AM, mcclnx mcc <mcclnx at yahoo.com.tw> wrote: > Thank you for your answer. Before you say something please be careful. I am NOT "blind". We have more than 100 DELL servers on different classes and use different tools to monitor system (include OPMN). > > We have been doing lots of research on this issue and also discuss With DELL support at least three times but NOT get good answer. > > This PERC 6/E is NOT on "battery lean cycle" and we understand what will happen on "battary lean cycle". > > > > --- 11/1/5 (三)，Brian Mathis <brian.mathis at gmail.com> 寫道： > >> 寄件者: Brian Mathis <brian.mathis at gmail.com> >> 主旨: Re: [CentOS] way to replace DELL PERC 6/E card??? >> 收件者: "CentOS mailing list" <centos at centos.org> >> 日期: 2011年1月5日,三,上午9:57 >> On Wed, Jan 5, 2011 at 9:47 AM, >> mcclnx mcc <mcclnx at yahoo.com.tw> >> wrote: >> > we have several R900 servers with PERC 6/E card in it. >> 袠ecently it we getting some message on /var/log/message >> say change to "write back" and change back to "write >> through". >> > >> > We figure out it is PERC 6/E card battery weak. 瓱y >> questions are: >> > >> > 1. some battery only use one year (some even shorter) >> and already this problem. >> > >> > 2. How come PERC 5/E does not have this issue? >> > >> > 3. where is DISK array information store for PERC 6/E? >> 狢 did NOT see NVRAM on PERC 6/E card. >> > >> > 4. when replace PERC 6/E card and power on server >> sometime it will ask you "import configuration" ans some >> time it won't. hy? >> > >> > 5. When replace PERC 6/E card and power on. 䒷erver >> ask "import configuration" should I answer "yes"? >> > >> > 6. where can I find documentation which mention >> "import configuration"? >> > >> > Thanks. >> >> >> Please install and learn about the Dell Open Manage >> Monitoring tools, >> and also read user guide for PERC/6 on Dell's web >> site. You seem to >> be flying blind here and just guessing at what's going >> on. They have >> a yum repository where you can "yum install" the software. >> >> Most likely the card performed a "battery relearn" cycle >> where it >> discharges and recharges the battery. During this >> process the battery >> level drops and this causes the cache memory to become >> disabled. >> >> It also sounds like you already got some new cards, which >> may have >> been a waste of money. Install Dell OMSA, review the >> OpenManage >> status and logs, and probably send back the new cards you >> already >> bought (maybe your Dell sales rep will be upset that you >> learned how >> to do this instead of just buy new stuff from him). >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >