Last Saturday, someone called me and said the Dell OpenManage management server had an amber light in the front and it kept beeping. Today when I came to work to take a look at it, I found that it has one hard drive failed, and it was beeping loud.
Open up the OpenManage Server Administrator of the server, go to System->Storage->PERC 4/DC, click on Information/Configuration in its Properties. Here a couple Controller Tasks can be chosen to execute. Click on Available Tasks, and choose Quiet Alarm, click on Execute to run this task. It will stop the RAID controller’s beeping.