I know - you must be thinking why would anyone want to upgrade a vSphere 4.0 environment to 4.1 when version 5.0 is out now. Well, I can think of a couple of reasons why one might think of doing that. One is the fact that many organisations are still not ready to move to version [...]
A few days back, we were hit by a problem on one of our vCenter servers (vCenter 4.0 Update 1) in that the "VMware VirtualCenter Server" service starting failing. The message in "System" event log was "The VMware VirtualCenter Server service terminated unexpectedly. It has done this n time(s). The following corrective action will be taken in 300000 milliseconds: Restart [...]
If you had a VM with a USB device attached, which was imported into ESX using some sort of conversion tool e.g. VMware Converter in the past, you may find that it refuses to boot after upgrade to vSphere 4. Possible symptoms include: An error saying something similar to "Device 'USB' is not supported", asking it to [...]