Migrate a VM fro ESXI 3.5 to ESX 4

Looking for the best way to migrate an Exchange 2007 VM server from ESXI 3.5 to ES 4. Does the migrate have to been with the VM powered off or can downtime be eliminated? Do I use VMware converter standalone or should I boot the VM from the converter CD?
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vmichAsked:
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coolsport00Commented:
How is your storage to the VM configured for your Information Stores/Storage Groups?

Yes, you can use vCenter Converter STandalone to convert/move it to the new host. You will then need to upgrade VMware Tools (MUST BE DONE FIRST), then upgrade your VMware Hardware.

~coolsport00
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vmichAuthor Commented:
The storage is on an SAN.
So I should upgrade the VMware tools on the exchange VM that I am migrating before I migrate it?
Not sure what you mean by upgrade the VMware hardware, could you explain that?
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coolsport00Commented:
Is the VM stored on the SAN...the Storage Groups...or both? I doesn't really matter if the VM alone is on the SAN. You can keep the current Exchg VM powered on and use the Converter tool. For the 'Source' in the Converter wizard, you would just select "Powered-on Machine". This would keep your Exchg VM up and running. If your Storage Groups are connected to your VM from the SAN using RDM, you simply do *not* convert those volumes in the Conversion wizard process because you can reconnect those RDMs to the new VM once it's moved/converted.

You cannot upgrade the tools & hardware until your VM is on the (new) vSphere version. So no, you will upgrade these after you migrate/convert your VM.

Yes, your VM runs hardware/drivers. If you click on your VM within your VI Client now, you should see a VMware Tools heading and VMware Hardware version 4, correct? When you move the VM to ESX4, you will need to upgrade both the VMware Tools and VM Hardware (see: http://www.vmware.com/pdf/vsphere4/r40/vsp_40_upgrade_guide.pdf, pg. 85).

Hope that helps.

~coolsport00
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vmichAuthor Commented:
Yes all of your information was very helpful. I know what steps to perform now.
Thanks
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