we have several R900 servers with PERC 6/E card in it. Recently 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. My 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? I 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. Why?
5. When replace PERC 6/E card and power on. Server ask "import configuration" should I answer "yes"?
6. where can I find documentation which mention "import configuration"?
Thanks.
On Wed, Jan 5, 2011 at 9:47 AM, mcclnx mcc mcclnx@yahoo.com.tw wrote:
we have several R900 servers with PERC 6/E card in it. Recently 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. My questions are:
some battery only use one year (some even shorter) and already this problem.
How come PERC 5/E does not have this issue?
where is DISK array information store for PERC 6/E? I did NOT see NVRAM on PERC 6/E card.
when replace PERC 6/E card and power on server sometime it will ask you "import configuration" ans some time it won't. Why?
When replace PERC 6/E card and power on. Server ask "import configuration" should I answer "yes"?
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).
Brian Mathis wrote:
On Wed, Jan 5, 2011 at 9:47 AM, mcclnx mcc mcclnx@yahoo.com.tw wrote:
we have several R900 servers with PERC 6/E card in it. Recently 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. My questions are:
<snip>
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.
Or go to the LSI website, and d/l MSM, and install that ("MegaRAID"), which gives you a nicer GUI than the one you get when you boot the system, and hit <ctrl-somethingorother> <snip> mark
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@gmail.com 寫道：
寄件者: Brian Mathis brian.mathis@gmail.com 主旨: Re: [CentOS] way to replace DELL PERC 6/E card??? 收件者: "CentOS mailing list" centos@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@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:
- some battery only use one year (some even shorter)
and already this problem.
How come PERC 5/E does not have this issue?
where is DISK array information store for PERC 6/E?
狢 did NOT see NVRAM on PERC 6/E card.
- when replace PERC 6/E card and power on server
sometime it will ask you "import configuration" ans some time it won't. hy?
- When replace PERC 6/E card and power on. 䒷erver
ask "import configuration" should I answer "yes"?
- 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@centos.org http://lists.centos.org/mailman/listinfo/centos
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@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@gmail.com 寫道：
寄件者: Brian Mathis brian.mathis@gmail.com 主旨: Re: [CentOS] way to replace DELL PERC 6/E card??? 收件者: "CentOS mailing list" centos@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@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:
- some battery only use one year (some even shorter)
and already this problem.
How come PERC 5/E does not have this issue?
where is DISK array information store for PERC 6/E?
狢 did NOT see NVRAM on PERC 6/E card.
- when replace PERC 6/E card and power on server
sometime it will ask you "import configuration" ans some time it won't. hy?
- When replace PERC 6/E card and power on. 䒷erver
ask "import configuration" should I answer "yes"?
- 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@centos.org http://lists.centos.org/mailman/listinfo/centos
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Wed, Jan 05, 2011 at 10:47:09PM +0800, mcclnx mcc wrote:
we have several R900 servers with PERC 6/E card in it. Recently 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. My questions are:
some battery only use one year (some even shorter) and already this problem.
How come PERC 5/E does not have this issue?
where is DISK array information store for PERC 6/E? I did NOT see NVRAM on PERC 6/E card.
when replace PERC 6/E card and power on server sometime it will ask you "import configuration" ans some time it won't. Why?
When replace PERC 6/E card and power on. Server ask "import configuration" should I answer "yes"?
Yes, it'll import your raid configuration without data coruption. It would also work with disks taken from older version of Perc.
- where can I find documentation which mention "import configuration"?
-
Brian Mathis -
Dominik Zyla -
m.roth＠5-cent.us -
mcclnx mcc