Yesterday evening I witnessed a weird phenomenon. We had to bring down a complete environment to move a 19″ rack to a different location. We switched the SAN on, waited a couple of minutes and switched the ESX hosts on. When the ESX hosts finished booting we booted the VirtualCenter. Everything looked normal in the VI Client. I had all connections to the SAN and all ESX Hosts were up and running. So I decided to power up the first VM, it was a VM named LNX01. Within a second the VM got renamed to LNX05(1). I though I was going nuts. I checked the settings of the renamed VM and indeed it was pointing out to the LNX05 diskfiles/vmx.
Maybe it was just me, or this one VM so I decided to give another one a try, I powered up LNX02. Same happening here, within a second the VM was renamed to PS01(1) and booted fine. The settings were pointing out to PS01. I checked a couple of VM’s but could not find anything weird. I restarted the VirtualCenter service just to be sure. I started the VM LNX03 and again it was renamed… Than I decided to restart the “mgmt-vmware” services on all of the ESX hosts and the problem never returned again. It seems like VirtualCenter had a different view than the ESX hosts had. But I can’t think of a logical reason what could cause this. I searched the knowledge base but could not find any related problems, well besides an old article based on VirtualCenter 1.2.