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IBM服务器出现Cache data was lost due to an unexpected power-off or reboot during a write operation的处理办法

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现有一台IBM X3650 M3服务器,硬件无告警,开启后出现:

Critical Message
Cache data was lost due to an unexpected power-off or reboot during a write operation,but the adapter has recovered.This could be due to memory problems,bad battery,or you may not have a battery installed.Press any key to continue or ‘C’ to load the configuration utility.
Enter Your Import Here:

出现这种现象的原因是阵列卡配备了回写缓存,数据会先写入缓存再写入硬盘,但是因为突然断电、手动强制关机、服务器宕机等等,数据只写入缓存还没写入硬盘,这个时候缓存中的数据可能就丢失了,服务器通电启动后,阵列卡自检发现有未写入的数据就会出现这个报错。

解决的办法就是在Enter Your Input Here处输入字母a再按回车:

image-1-1024x658.png

然后会提示Critical Message handing completed.Please exit.

按Y再继续。一般如果不是硬件故障,那么阵列卡RAID状态一般都是正常的,但是如果无法引起系统或者操作系统报错,则需要排查下硬件故障。

因为这个问题的出现是因为缓存中的数据丢失,所以可以有以下几个办法来降低缓存数据丢失的问题:
1、将回写模式改成直写模式Write Through
2、加装电池
3、为服务器配备UPS

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