Which vSAN Maintenance Mode option was used on a host?

Last week there was a question on VMTN around maintenance mode, this customer wanted to find out which vSAN Maintenance Mode option was used while the host was placed in maintenance mode. The person who placed the host into maintenance wasn’t around, and I guess the customer wanted to know if data was moved from … [Read more...]

VMs which are not stretched in a stretched cluster, which policy to use?

I’ve seen this question popping up regularly. Which policy setting (“site disaster tolerance” and “failures to tolerate”) should I use when I do not want to stretch my VMs? Well, that is actually pretty straight forward, in my opinion, you really only have two options you should ever use: … [Read more...]

vSphere HA reporting not enough failover resources fault with stretched cluster failure scenario

Last few months I had a couple of customers asking why vSphere HA was reporting “not enough failover resources” fault in a stretched cluster failure scenario for virtual machines that are still up and running. Now before I explain why, let’s paint a picture first to make it clear what is happening … [Read more...]

Running vSphere 6.7 or 6.5 and configured HA APD/PDL responses? Read this…

Advertise here with BSA If you are running vSphere 6.7 or 6.5 and have not installed 6.7 P02 or 6.5 P05 yet and you have APD/PDL responses configured within vSphere HA it could be that an issue causes VMs not to be failed over when an APD or PDL occurs. This is a known issue in the release, and P02 or P05 solves this … [Read more...]

The ramdisk ‘var’ is full on ESXi host and fix (without maintenance mode or reboot)

I recently encountered an issue where vMotions on a host would fail, the host would disconnect from vCenter, and some other strange errors. This was an HP host installed with the HP ISO image, but not sure if that is the cause of this issue. When investigating the logs on the host I noticed that /var on the ramdisk was … [Read more...]