FTT

A deeper-dive into Fault Tolerant VMs running on vSAN

After receiving a number of queries about vSphere Fault Tolerance on vSAN over the past couple of weeks, I decided to take a closer look at how Fault Tolerant [...]

Which policy changes can trigger a rebuild on vSAN?

Some time ago, I wrote about which policy changes can trigger a rebuild of an object. This came up again recently, as it was something that Duncan and I [...]

How many hosts are needed to implement SFTT in vSAN Stretched Cluster?

Many of you who are well versed in vSAN will realize that we released a Secondary Failures To Tolerate (SFTT) feature with vSAN 6.6. This meant that not only [...]

Debunking some behavior “myths” in 3 node vSAN cluster

I recently noticed a blog post describing some very strange behaviors in 2-node and 3-node vSAN clusters. I was especially concerned to read that when they [...]

VSAN 6.2 Part 11 – Support for higher FTT with larger VMDKs

In the VSAN 6.0 Design & Sizing Guide, a caveat was placed around the size of a VMDK, and the Number of Failures to Tolerate (FTT) number. It reads like [...]

VSAN 6.0 Part 8 – Fault Domains

One of the really nice new features of VSAN 6.0 is fault domains. Previously, there was very little control over where VSAN placed virtual machine components. [...]

VSAN Part 36: Considerations when using Force Provisioning

One policy setting that I have yet to discuss in any great detail in my blog posts about VSAN. The ForceProvisioning policy setting, when placed in the VM [...]