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ESXi 4.1 Virtual machines appear as unknown in inventory on host and invalid in vCenter Server

Hi Experts,

We've copied a VM from the datastore of an ESXi 5.0 to the datastore of ESXi 4.1 Host. The issue is that, when we try to add the VM to the inventory of the ESXi 4.1 host, the VM appears to be invalid in the vCenter and Unknown in ESXi 4.1 Host.

May you please advise if what's the best way of moving the VM from an ESXi 4.1 host to ESXi 5.0. Please note that both of the host is not on a cluster.

Please help. Thanks in advance!
1 Solution
Stelian StanCommented:
If on ESXi 5 that vm is running virtual hardware v8 and VMFS v5 you will not be able to move the vm to another host running ESXi 4.1

If you want to move  a vm from ESXi 4.1 to 5.0 then upgrade your VMs to virtual hardware v8, upgrade VMFS to v5, then upgrade vmtools on guests. This requires a reboot for each guest.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
this should have worked for you, but maybe the VMX was corrupted or not copied correctly.

two methods:-

Please See my EE Articles

HOW TO: Clone or Copy a virtual machine in VMware vSphere Hypervisor ESX/ESXi 4.x or ESXi 5.0

another method is to use VMware vCenter Converter Standalone 5.0, and complete a V2V.

HOW TO:  P2V, V2V for FREE - VMware vCenter Converter Standalone 5.0

HOW TO: Improve the transfer rate of a Physical to Virtual (P2V), Virtual to Virtual Conversion (V2V) using VMware vCenter Converter Standalone 5.0

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