ESX Migration

We are preparing for a server migration and I'm trying to find the best way to do this.

They currently have two servers with ESX 4.0 and about a dozen VMs between the two physical machines.  We'll be moving to two new physical servers with ESXi 6.0.

We want to copy/move the VMs from the ESX 4.0 servers to the new ESXi 6.0 servers.  This is all in production so we're trying to minimize downtime.

Is it possible to use vMotion to migrate the VMs from the ESX 4.0 servers to the the ESXi 6.0 servers?  Would that be compatible and our best way to do it?

If not, what would you suggest?
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Peter HutchisonSenior Network Systems SpecialistCommented:
A suggested migration method:
1. Upgrade or migrate  the current vSphere Center Manager server to v6.
2. Shutdown VMs in turn
3. vMotion servers to new ESX servers
4. Check config esp. network, cpu and power them on
5. Update VMWare tools
Justin StearCommented:
As per: http://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.upgrade.doc%2FGUID-CD26D0E7-D18C-482F-88BC-69139BDEC0FB.html

I don't believe a direct upgrade from 4.0 is doable.  You can upgrade to 5.5 and then upgrade to 6.0, but it would probably be best to do a new load to 6.0.

Here are some other links that may help you out:
https://www.vmware.com/products/vsphere/upgrade-center/upgrade

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2109711

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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is it possible to use vMotion to migrate the VMs from the ESX 4.0 servers to the the ESXi 6.0 servers?  Would that be compatible and our best way to do it?

Yes, compatible and the easiest.
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