I'm doing a document to prove that we need a cluster environment for our virtual machines, as we have only one IBM X650 M3 hosting a load of virtual machines at our datacentre. There is no SAN either. All of the disks being used are internal on the actual X3650 which I believe we have around 14disks. I'm about to find out what sort of RAID has been set up.
I am making the documentation simple for board/management, but wanted to include 'what's wrong with his scenario' to show the sort of problems that could go wrong.
The current X3650 M3 has dual power supply, so that can't be a reason. Storage though may be an issue as if more than two disks die, we would lose all virtual machines that are business critical.
What other possibilities are there? Faulty Ram? Motherboard dying? Faulty RAM?
Thanks for helping