What is the RAID controller model installed on those servers !
Please specify what exactly you want to monitor? CPU usage, RAM, disk or servers availability at all?
Here a couple of links to the same discussions. Hope they will be useful.
The RAID controller varies depending on the make/model. Here are some:
I only care about disk failures at this time. I have ways to monitor other things, but I don't currently have a convenient way to individual disks that are part of a RAID setup.
I can detect some errors (such as power supply failures) with this command:
esxcli hardware ipmi sel list
However, that doesn't show anything if I pull out a disk.