V2V for large VMs, how to maintain consistency

VM image converter (VMDK, VHD, VHDX, IMG, RAW, QCOW and QCOW2), P2V migrator

Moderators: anton (staff), art (staff), Max (staff), Anatoly (staff)

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afb.nfz
Posts: 1
Joined: Tue May 09, 2023 10:47 pm

Tue May 09, 2023 10:56 pm

hi i'm trying to move a handful of VMs from a 2012R2 Hyper-V environment to a 2022 Hyper-V. StarWind V2V seems to work flawlessly, but i've only tested it on a VM with smaller (~100GB) disks.

A few of the VMs i need to migrate have 2-5TB of VHDs, and for various reasons i only have a 1Gbps connection between the hosts. So it's going to take a looooong time.

My question is, if this is snapshot-based replication, does V2V have the ability to do a 2nd incremental R/W to capture all the data that's changed on the source, between the initial snapshot and the time when the conversion is finished?

or is there another StarWind tool that DOES have this capability?

thanks
yaroslav (staff)
Staff
Posts: 2317
Joined: Mon Nov 18, 2019 11:11 am

Wed May 10, 2023 12:12 pm

Sadly no. You need to keep the VM offline for the entire conversion time.
Why don't you just move the VM between the Hyper-V hosts via Hyper-V Move, update the VM version, and register the VM in place.
herbertjones
Posts: 1
Joined: Mon May 15, 2023 7:53 am

Mon May 15, 2023 7:57 am

I think it's no.Your VM needs to be kept offline for the entire conversion period.
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anton (staff)
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Location: British Virgin Islands
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Tue Feb 27, 2024 3:11 pm

We do (Hyper-V) or will do soon (VMware & KVM) "live" conversion when you don't need to shut down any VMs. FYI.
herbertjones wrote:
Mon May 15, 2023 7:57 am
I think it's no.Your VM needs to be kept offline for the entire conversion period.
Regards,
Anton Kolomyeytsev

Chief Technology Officer & Chief Architect, StarWind Software

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