Adding new esxi to existing essentials plus

I have a 5.5 essentials plus kit, with 3 esxi hosts in a cluster setup, connected to an IBM Stormwize storage.
I am getting short of resources in those 3 hosts, particularly since I want to leave enough room for vMotion in case of a host failure. I thought about buying an additional esxi host ( 6.5 standard ) . Can i add this esxi to the existing vCenter?

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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
Essentials and Essentials Plus have a limit of 3 servers, so the answer is no.
GreatSolutionsC.I.OAuthor Commented:
Ok, so is there a way for me to add a standalone esxi, and move machines from the cluster to the new esxi?
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
You are always able to remove machines from vCenter, and then manage directly via Web Interface or Infrastructure Client ("deprecated") by connecting to the vmHost instead of vCenter. Of course you loose all advanced features like vMotion for that machine.

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GreatSolutionsC.I.OAuthor Commented:
Thank you
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I want to leave enough room for vMotion in case of a host failure.

vMotion does not help you with that, unless you know the server is about the fail. VMware HA is the function which re-starts VMs on other hosts, in the event of host failure.

Discuss your requirements with VMware, they may offer you an upgrade from Essentials to Standard.
GreatSolutionsC.I.OAuthor Commented:
Hi Andrew
Thanks for jumping in. Indeed, i have it set up in a cluster, but now i know there is not enough space left to restart vm's in other hosts in case of failure, so my idea is to add an esxi ( not to the cluster, since i already have 3 hosts in it, the maximum for the license ) , move some vm's to that new host, and this way i'll free enough resources for the remaining vm's in the cluster to be HA protected
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
But the VMs you move will not be protected in a host failure!

and also you'll be stuck if you need to do host maintenance.

If you have the money to purchase more licenses, discuss with VMware, they'll offer you a deal, and upgrade...
GreatSolutionsC.I.OAuthor Commented:
You're right. Will check with them
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