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 >