What is a username Ubuntu 14.04 Standar, i'm download from web proxmox
link:
http://download.proxmox.com/images/system/
file name: ubuntu-14.04-standard_14.04-1_amd64.tar.gz
link:
http://download.proxmox.com/images/system/
file name: ubuntu-14.04-standard_14.04-1_amd64.tar.gz