Using HCI Mesh with a stand-alone vSphere host?

Last week at the French VMUG we received a great question. The question was whether you can use HCI Mesh (datastore sharing) with a stand-alone vSphere Host. The answer is simple, no you cannot. VMware does not support enabling vSAN, and HCI Mesh, on a single stand-alone host. However, if you still want to mount a vSAN … [Read more...]

Can I vMotion a VM while IO Insight is tracing it?

Today during the Polish VMUG we had a great question, basically, the question was if you can vMotion a VM while vSAN IO Insight is tracing it. I did not know the answer as I had never tried it, so I had to test and validate it in the lab. While testing it became obvious that IO Insight and vMotion are not a supported … [Read more...]

What if the disk controller driver included in my vendor’s ESXi image is not on the vSAN HCL?

Sometimes unfortunately there are situations where a vendor’s ESXi image includes a disk controller driver that is not on the vSAN HCL/VCG (VMware Compatibility Guide). Typically it is a new version of the driver which is supported for vSphere, but not yet for vSAN. In that situation, what should you do? So far … [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...]

How to login to the vCLS VMs!?

I was asked this question this week, how you can login to the vCLS VMs. Now before I share the video, I want to mention that I do not encourage people doing this, but as it is documented and supported I do want to provide a simple “how to” for how this works. If you want to login to the vCLS VM, maybe for … [Read more...]

Which vSAN policy changes will trigger a rebuild?

A couple of years ago I did a VMworld session with Cormac and we discussed the top things everyone should know about vSAN. One of the items discussed was which policy changes would trigger a rebuild. We tested the various situations and documented them. Two weeks ago a question around this was asked on a VMware … [Read more...]

Did you know vSphere 7.0 Update 1 also has a Skyline Health Check for vSphere Clustering Services?

I did not know this, but yesterday the PM for vCLS reached out to me and informed me that we now have a Skyline Health Check as well for vSphere Clustering Services. The funny thing is that I actually requested this health check to be added after having a discussion on the topic of vCLS with the PM. Very impressive how … [Read more...]

vSAN 7.0 U1 File Services with SMB and NFS support demo

Advertise here with BSA I created this quick demo last week, and I figured I would share it here. It shows vSAN 7.0 U1 File Services with SMB and NFS support. I wrote about vSAN File Services and what is new in this post here, make sure to read that as well, and of course, it also details all the other introduced … [Read more...]

What’s new for vSAN 7.0 U1!?

Advertise here with BSA Every 6-9 months VMware has been pushing out a new feature release of vSAN. After vSphere and vSAN 7.0, which introduced vSphere Lifecycle Manager and vSAN File Services, it is now time to share with you what is new for vSAN 7.0 U1. Again it is a feature-packed release, with many “smaller … [Read more...]