A few weeks ago monitoring alerted that a V245 server we use was down.
The issue was found to be a PDU to its cabinet which had tripped out.
However this only fed one PSU on the server – the other PSU was still receiving power from another PDU.
I found that the server would not come up/boot with only one PSU receiving power – it needed both PSUs receiving power to come up.
This of course rather scuppers any thoughts of avoiding single points of failure.
Has anyone any dieas why this may the case?