Re: ESXi4: "No free memory for file data"???
Meanwhile I discovered that the problem has somehow to do with the onboard IPMI on the mainboard.
First I deactivated the IPMI (BMC) feature by jumper.
I booted up ESXi and let it run for a few hours. No more error messages. No more problems.
Then I deactivated the CIM-feature in ESXi and activated the mainboard IPMI again.
Now the server is already running for 48h without any problems.
The setting is under the configuration tab, advanced settings:
Default was 1 and I set it to 0.
Now ESXi cannot show sensor status anymore but I can live with that for the moment.
Perhaps some firmware update or ESXi update will sort this out sometime in the future...