@dinhngtu here is the output from one of the VMs recently migrated: xe vm-param-get uuid=261634d9-b67c-1048-b028-2e33abea6329 param-name=PV-drivers-version micro: -1; xennet: XenServer 9.1.7.65 ; xeniface: XenServer 9.1.12.94 ; xenvif: XenServer 9.1.13.107 ; xenvbd: XenServer 9.1.9.82 ; xenbus: XenServer 9.1.11.115

@guiand888 Thank you for the feedback. Just a note: before running XenClean, please turn off the "Manage Citrix PV drivers via Windows Update" option; otherwise, Windows will try to reinstall Citrix drivers as soon as it's rebooted. For the storage perf, Xen PV does fluctuate a lot at I/O performance (both network and storage), so the real performance would be better seen with long benchmark runs (depending on your I/O backend).