Unsolved
This post is more than 5 years old
6 Posts
0
61793
PE 2850: BMC PS Redundancy Sensor (redundancy lost)
We had a warm up in our server room and both our PE 2850 had a warning on the front that stated the ambient temperture got high. We got the room cooled down and I've noted daily errors since then in the Windows Event Viewer and now in the OpenManage Server Advisor
Windows: Event Id: 1154 Server Administrator: Event Details: Voltage sensor detected a failure value Sensor location: BMC ROMB Battery Chassis location: Main System Chassis Previous state was: OK (Normal) Discrete voltage state: Bad
Dell OpenManage: System Boot BMC PS Redudancy sensor redundancy lost
NOTE: The OpenManage ones only occur at system reboot while the Windows Event triggered 5 times in 24 hours.
- Can someone explain to me what this is about and how to correct?
- Bad battery or sensor?
- Likely caused by "warm up" in the server room?
- What issues will it cause in the future?
I have read many on the google-sphere state that Dell will often say to upgrade all bios as well as OpenManage but this error also lists with Windows.
Thank you for any contructive comments.
Shawn
Ohio
theflash1932
7 Technologist
7 Technologist
•
16.3K Posts
0
September 4th, 2010 08:00
The event in the Windows logs as put there by the OpenManage software, so it something was wrong with the software, Windows wouldn't know the difference. As the controller controls the ROMB battery state, the BMC controls reporting of hardware, OpenManage is the GUI link to the BMC, and the BIOS supports it all, it stands to reason that some problems can be resolved - even before they are problems - by updating the system firmware.
Chances are the excessive heat caused some kind of damage, but I would recommend reseating the ROMB battery cable connection and the entire riser card. Also, swap positions with the two power supplies to see if the bad power supply follows the slot or the unit. After reseating these and updating the firmware, then you will replace hardware as the messages indicate.
Power supply is pretty self-explanatory, but having a bad ROMB battery - at best - can disable your onboard cache for the RAID controller, degrading its performance. At worst, it will cause data corruption or possibly even prevent the system from POSTing.