I noticed this thread on the VMTN communtity which discussed a time-out during a cluster election process. The one thing all scenarios described in the topic is that they upgraded from 4.1 to 5.0 or 5.0 base to a higher patch level. Marc Sevigny posted in the same thread that it is a known issue which the HA team is [...]

I am just playing around in my lab and needed to do a couple of common ESXi commandline tasks which I figured I would document as they will come in handy at some point. List all VMs registered to this host (This reveals the Vmid needed for other commands) vim-cmd /vmsvc/getallvms Unregister a VM vim-cmd /vmsvc/unregister <Vmid> Register a VM [...]

I was playing around with vShield App and I locked out my vCenter VM which happened to be hosted on the cluster which was protected by vShield App. Yes I know that it is not recommended, but I have a limited amount of compute resources in my lab and I can’t spare a full server just for vCenter so I [...]

Today I was working on a couple of test scenarios in a remote lab. For some reason the latency was a lot higher than normal and I was very difficult to type anything in the Remote Console through the vCenter Client. Every single character I tried popped up 2 or 3 times… which makes it very difficult to type a [...]

Frank and I have discussed this topic multiple times and it was briefly mentioned in Frank’s excellent series about over-sizing virtual machines; Zero Pages, TPS and the impact of a boot-storm. Pre-vSphere 4.1 we have seen it all happen, a host fails and multiple VMs need to be restarted. Temporary contention exists as it could take up to 60 minutes [...]

One of our partners was playing around with vCloud Director and noticed that they could create a Provider vDC and link it directly to an ESX Host. vCloud Director did not complain about it so they figured it would be okay. However it is a requirement for vCloud Director to have DRS. One of the reasons for this being is [...]

I introduced Opvizor a couple of days ago and figured why not give it a spin with a vm-support files of one of my hosts in my lab. I used vCenter to create the vm-support file, for those who have never done that it is really simple: open the vSphere Client Click Administration Click “Export System Logs” Select the server [...]