Re: Insufficient resources to satisfy configured failover level for vSphere HA

There probably is a reservation set on one of your virtual machine's which skews the outcome of the algorythm used by Admission Control. I have written a dozen articles on this topic. First I would suggest to check for reservations, you can do this very simply by using an awesome tools like RVTools (http://www.robware.net/)

Second, I would suggest reading some of the following blog posts:

http://www.yellow-bricks.com/vmware-high-availability-deepdiv/#HA-admission

http://www.yellow-bricks.com/2012/12/04/insufficient-resources-to-satisfy-ha-failover-level-on-cluster/

Or just do a search on my blog:

http://www.yellow-bricks.com/?s=admission%20control