Vmware Esxi Free Backup. I think veeam has no limits when choosing vms to back up however with altaro is limited to 2 vms per host or something like that. Xsibackup is another free script that runs on the esxi host and backups running virtual machines on free esxi hosts.
It will backup vmwarevm os & other partition as image. Enter login information for source vi://192.168.0.50/. It also has no limits with licensing.
Backup of esxi free, esxi and vcenter with iperius backup.
Vembu bdr suite offers a free backup solution that delivers powerful, flexible, and agile data protection for your vmware virtual machines at zero cost. Without this license, these apis cannot be invoked by backup exec's vmware agent. It could be highly possible that with your esxi 5.0 hosts, the free license of vmware included the vstorage api option. To save your esxi configuration, you can do it by command line on the esxi, more information: