NEC Express5800/T120e Maintenance Guidance page 34

Chapter 1 Maintenance
[?] The N8103-153/154 or N8103-155 additional battery is not recognized or the following message is
displayed in POST
The battery hardware is missing or malfunctioning,
or the battery is unplugged, or the battery could be
fully discharged. If you continue to boot the system,
the battery-backed cache will not function.
If battery is connected and has been allowed to charge
for 30 minutes and this message continues to appear,
then contact technical support for assistance.
Press 'D' to disable this warning (if your controller
does not have a battery.
 Are the cable between the battery pack and battery board and the control cable between the battery board
and battery connector connected correctly?

Connect the cables correctly.
 Is this message displayed after the battery is connected?

If the battery charging status is low, the battery may not be recognized. If the battery is not recognized
although 24 hours has passed, restart the system once.
If the battery is not recognized although the above action has been taken, the additional battery may be
faulty. Contact your sales representative.
[?] Event ID505: If the N8103-153/154 or N8103-155 additional battery is mounted, the following message may
be registered in the RAID log of Universal RAID Utility and OS logs (Windows event log, Linux syslog)
Event source : raidsrv
Event ID
Type
Description
 If the above event is registered, check the Cache Mode (current value) of the RAID Controller with Universal
RAID Utility.

If the Cache Mode (current value) is Write Back, use the battery as is because there is no problem.

If the Cache Mode (current value) is Write Through, the battery refresh operation causes the battery
temperature to rise temporarily. This event temporarily stops the refresh operation, so the battery
temperature drops and the refresh operation resumes. However, it may take time till the temperature
drops. After the refresh operation is completed, the Cache Mode (current value) changes to Write Back.
If the Cache Mode does not change to Write Back although 24 hours have elapsed, the battery may be
faulty. Replace the battery.
34
: 505
: Warning
: <RU0505> [CTRL: Number of RAID Controller] The temperature of Battery
is high.
Express5800/T120e Maintenance Guide
5. Troubleshooting