Recent Posts

Troubleshooting vMotion

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In previous blog posts, we looked into the vMotion process (The vMotion Process Under the Hood) and how to utilize high bandwidth networks to lower live-migration times (How to Tune vMotion for Lower Migration Times?). This blog post is dedicated to gaining more knowledge on what to do when troubleshooting vMotion if a live-migration is Read more...

How to Tune vMotion for Lower Migration Times?

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In an earlier blog post, The vMotion Process Under the Hood, we went over the vMotion process internals. Now that we understand how vMotion works, lets go over some of the options we have today to lower migration times even further. When enabled, by default, vMotion works beautifully. However, with high bandwidth networks quickly becoming Read more...
vSphere Rocket

Announcing vSphere 6.7 Update 3

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We are excited to announce the future release of VMware vSphere 6.7 Update 3. This new vSphere release comes with enhancements that will continue to deliver on our goal of providing a highly performant, efficient and more secure hybrid cloud platform to our partners and customers. Next to various enhancements and driver updates, we again will include new Read more...

The vMotion Process Under the Hood

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The VMware vSphere vMotion feature is one of the most important capabilities in today’s virtual infrastructures. Since its inception in 2002 and the release in 2003, it allows us to migrate the active state of virtual machines from one physical ESXi host to another. Today, the ability to seamlessly migrate virtual machines is an integral part Read more...

Enhanced vMotion Compatibility (EVC) Explained

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vSphere Enhanced vMotion Compatibility (EVC) ensures that workloads can be live migrated, using vMotion, between ESXi hosts in a cluster that are running different CPU generations. The general recommendation is to have EVC enabled as it will help you in the future where you’ll be scaling your clusters with new hosts that might contain new CPU models. Read more...

Performance Study on PMEM in vSphere

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Persistent Memory (PMEM) is modern technology that provides us with a new storage tier that will be beneficial for Enterprise Applications that need reduced latency and flexible data access. Examples are (in-memory) database platforms for log acceleration by caching, data writes and reduced recovery times. High Performance Computing (HPC) workloads can also greatly benefit from Read more...

vFlash Read Cache Deprecation Announced

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We announced the deprecation of vFlash Read Cache (vFRC) in the release notes of vSphere 6.7 Update 2. vFRC continues to be supported for vSphere 6.0/6.5/6.7. However, the next major release will not. VMware vSphere Flash Read Cache is being deprecated. While this feature continues to be supported in the vSphere 6.7 generation, it will be Read more...

What is the Impact of the VMKlinux Driver Stack Deprecation?

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Current versions of ESXi 6.x are shipped with both the VMKlinux and the Native driver stack. Modern hardware is, in many cases, using the new Native drivers. However, older hardware may still depend on a VMKlinux driver module. We announced to deprecate the VMKlinux driver stack back in 2017. This blog post goes into detail Read more...