Copying vs Migrating

cheto06
cheto06 used Ask the Experts™
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I need to migrate an 800+G vm to a new Data Store. I have vmotion but not svmotion.

The question is wheather to migrate or copy the vm using a toold like Veeam Backup.  Which one would it be faster? Safer?

Thanks,
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Login to the console, and copy at the ESX server prompt with cp.

it will be much faster if you peform a server side copy.

cp /vmfs/vm1/*.vmdk /vmfs/vm2/
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
if you use cp (for copy), it's faster and safer.

once you have TESTED (TEST TEST TEST and TEST some more), the new virtual machine, you can safely delete or archive the old.

To add to virtual machine, editing the Virtual Machine settings, select Remove Virtual Disk from Machine (do not use the second option Delete from disk).

and add and browse to new datastore and add the copied vmdk (disk).
Paul SolovyovskySenior IT Advisor
Top Expert 2008
Commented:
svmotion will give the ability to migrate live.  If you shutdown the VMs and migrate cold it's the easiest way to do this.  Another way to do this is to clone the VMs to the new datastore, thus leaving the old copy where it is until you're sure everything went over fine.
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Top Expert 2010
Commented:
You could also use vCenter Converter Standalone to convert/copy it to the 2nd datastore. That can be done with the VM still running, if that's a requirement you desire. It's easy to do, the VM is still up, and it's safe. Keep in mind, regardless of which method you choose, you have 800GBs to move...it will take several hours to do regardless.

Regards,
~coolsport00

Author

Commented:
Any idea is the cloning will be any faster than cold migration?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
i would expect them both to br the same.

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