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So you have an ESXi host, which is currently hosting a vCenter Appliance VM ? - yes.<br />
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and this ESXi host is being managed by the appliance which it's hosting ?<br />
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and what are you doing with the ESXi host ?<br />
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Migrating the host where ?<br />
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or do you mean, you are about to add the Host to the Appliance? so it can be managed by vCenter Server.
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Yes sir the ESXi host (we'll call it ESX03) is hosting the vCenter appliance (we'll call this one new vCenter).<br />
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ESX03 is currently managed by the old vCenter server; I want to migrate it to the new vCenter Server appliance. So I will be moving ESX03 from old vCenter to new vCenter; New vCenter is on ESX03. <br />
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I am adding ESX03 to new vCenter so I can manage it from there going forward. Thank you for helping me and let me know if you need any more info.
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Worked like a charm; thanks a lot!!!
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Should I be concerned about migrating an ESXi host that has the new vCenter Server Appliance on it that the ESXi host is being migrated to? I can't find any documentation that would suggest this would be a problem as long as the host and its VMs meet all of the prerequisites according to <a href="https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004775" rel="ugc nofollow">this</a> KB. I just want to make sure before I migrate this host. Thank you in advance for any help you can provide.
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Should I be concerned about migrating an ESXi host that has the new vCenter Server Appliance on it that the ESXi host is being migrated to? I can't find any documentation that would suggest this would be a problem as long as the host and its VMs meet all of the prerequisites according to this (https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1004775) KB. I just want to make sure before I migrate this host. Thank you in advance for any help you can provide.

Should I be concerned about migrating an ESXi host that has the new vCenter Server Appliance on it that the ESXi host is being migrated to?

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.