QUERY Section A: We are in the process of migrating VMs from a Vendor to OpenStack . The Vendor has hosted the VMs using RedHat Virtualization and HyperV around 100 VMs. Each VM size varies from 50 GB to 150 GB size. What is the best way to migrate these VMs to New Hardware infra Installed with OpenStack Ussuri. What need to be done at the existing live VMs with the Vendor and in what file format we have to ask the vendor to give the snapshot of VMs to be migrated ? I am new to the migration of VMs from a live production setup ( the present Vendor deployed VMs with all aplications running on the VM with HyperV and RedeHat KVM. ) We are also using KVM hypervisor. Kindly advise and direct me with all good practices followed to perform this migration from existing vendor to our own setup with OpenStack and KVM. Pls shed some light on this. QUERY SECTION B Another question below ffor a trail the existing vendor has given a demo VM, which is a Windows VM with an ERP application hosted on it . But the vendor handed over three files of single VM , Three qcow2 files. They handed over three qcow2 files for this VM as follows. 1. First file is OS image as qcow2 2. /boot as another qcow2 image 3. /lv-datat as another qcow2 image How to combine these files and we can create a Running VM from these files and put it on bare metal installed with KVM only. Is this possible ? How ? What need to take care while doing this operation?. your hints and direcitons highly appreciated. Thanks in Advance, Kris