Why Did My Host Shut Down Unexpectedly version 6.7.0

[MarcTW]

This morning around 1240am EDT, one of my 4 hosts shut down.  It took 7 servers with it.  I had performed no recent maintenance in vSphere.  I updated the versions of IMM and UEFI Sunday 10pm EDT. 

I have vshpere-webclient-xxxx entries stating API invocations and identifying the agent vmware vim-java 1.0. 

What would cause a host to go down?  Where's the best place to get assistance troubleshooting. 

I am an MSP and inherited this system, so I am dissecting it as I go. 

[a_p_]

How exactly did the host "shut down". Did it power off, or run into a PSOD?

If the host powered off, the first place to look for information are the server's hardware management logs, e.g. iLO for HPE, iDRAC for Dell, etc.

André

[maksym007]

The popular reason for such errors - Driver/Firmware compatibility.

Try to update everything starting from:

1. iLO/iDRAC

2. BIOS. 

3. ESXi to the latest version. 

4. Firmware/Drivers. 

it should bring stability. if not helps, check if RAM Modules are not causing issues, check in BIOS - > CPU settings.