Azure to on premise V2V issue

[Hammerfist]

Hello,

I've been asked to look at moving a few VMs in Azure back to our on premise VMware estate. I've tried VMware's converter, but that gives me an I/O error as soon as I try to convert a VM. So I thought I'd try StarWinds V2V which get's much further.

I've installed it on a server in our VMware estate and managed to get it connected to Azure where I can see my test VM with 2 partitions. I select the VM and it start to convert and it gets to 99% and I get the error:

"You have requested access to an area of the virtual disk that is out of bound"

Anyway I go to vCenter and the VM boots up fine to the desktop but the additional partition is not there and if I go to Disk Manager it sees the partition but wants to format it as if it's a new drive.

I then decided to build a new test VM in Azure with just the C drive and I converted that and once again it gets the same error at 99% but still boots up find in VMware so I don't think it's an error to worry about.

I need to somehow get the additional partitions over successfully, please advise.

Reddit post and screenshots here https://www.reddit.com/r/sysadmin/comme ... v2v_using/

Thanks

[yaroslav (staff)]

Greetings,

Welcome to StarWind Forum.
This might be related to VMware https://support.quest.com/appassure/kb/ ... of-bounds-.
What you can try is to either reduce the size of the offending partition(s) or increase the size of the disk.

Let me know if that helps.

[Hammerfist]

Thanks,

The thing is the Azure partition is using Azure template.

c:/127GB - weird size but works
e:/32GB - comes through as new disk and needs formatting in VMware, seems StartWinds does know how to handle additional disks after the OS disk.

[Hammerfist]

Also read Azure to HyperV then HyperV to Azure is a better way?

[yaroslav (staff)]

Greetings.

seems StartWinds does know how to handle additional disks after the OS disk.

That's wrong as the disk has undergo the conversion. Did a conversion of VMs to and from Azure with multiple disks some time ago with the current V2V Converter build and it worked.

That looks to me like an ESXi related problem and here is the resolution https://support.quest.com/appassure/kb/ ... of-bounds-. Do you use IP of the ESXi host?
If there is a problem with disk partition, could you extend the virtual disk that causes troubles? See how it can be done in Azure https://querysurge.zendesk.com/hc/en-us ... pand-Disk-.