Installation on Proxmox (KVM) Create a new Proxmox VM. CUCM expects a very specific hardware configuration when using VMWare. We are not using VMWare, so we will try to closely emulate the supported configuration with some minor changes for improved performance. Ensure the following settings are set: System -> Machine = i440fx System -> BIOS = SeaBIOS System -> SCSI Controller = VirtIOS SCSI single Disks -> Bus/Device = SCSI (0) Disks -> Disk size (GiB) = 110 CPU -> Cores = 2 (or 4) CPU -> Type = host Memory -> Memory (MiB) = 6144 (or 8192) Skip Ok Yes Proceed No Continue Europe/London -> OK Yes No No Configure network manually -> OK No Configure credentials -> OK Configure cert -> OK Yes Yes 162.159.200.1 (time.cloudflare.com) -> OK Configure password -> OK No Disable All Call Home on System Start -> OK Configure credentials -> OK OK