Category Archives: admission control

HA Futures: Admission Control – Part 2 of 4 – (Please comment, feedback needed!)


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Admission Control is always a difficult topic when I talk to customers. It seems that many people still don’t fully grasp the concept, or simply misunderstand how it works. To be honest, I can’t blame them. It doesn’t always make sense when you think things through. Most recently for Admission Control we introduced a mechanism […]

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HA Admission control: How can I check how much reserved resources are used?


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I had this question twice in the past three months, so somehow this is something which isn’t clear to everyone. With HA Admission Control you set aside capacity for fail-over scenarios, this is capacity which is reserved. But of course VMs also use reservations, how can you see what the total combined used reserved capacity […]

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Posted in 6.0, 6.5, 6.7, admission control, BC-DR, Book, cloud, drs, ha, Server, u1, vSphere | Comments Off on HA Admission control: How can I check how much reserved resources are used?

Insufficient configured resources to satisfy the desired vSphere HA failover level on the cluster


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I was talking to the HA team this week, specifically about the upcoming HA book. One thing they mentioned is that people still seem to struggle with the concept of admission control. This is the reason I wrote a whole chapter on it years ago, yet there still seems to be a lot of confusion. […]

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Posted in 6.5, 6.7, admission control, BC-DR, ha, Server, VMware, vSphere | Comments Off on Insufficient configured resources to satisfy the desired vSphere HA failover level on the cluster