You should try XSIBackup, you can download it at: https://33hops.com/xsibackup-vmware-esxi-backup.html
- It performs hot backups, so your VMs will always be available.
- It also performs cold backups, shutting down your VM prior to the backup and turns it on when the backup has finished.
- Warm backups allow maximum compatibility with more exotic OSs while minimizing downtime to some seconds.
- It is cron programmable.
- Can automatically make room for your new backup in the backup device once it is full based on the full size of the device or a configurable space limit.
- It is capable of using Rsync to perform differential backups, mirrored to a second ESXI box or to a local datastore.
- Can overwrite backups or create a new folder for each new backup.
- It's self contained, will run in the hypervisor without the need of additional hardware.
- Works on the free version of the ESXi hypervisor.
- Will create and use it's own SSL key pair allowing to stablish trust relationships between different servers that will be preserved across reboots.
- It's super easy to install with this a downloadable installation script.
- A Pro version is available whith lots of additional features, like:
- OneDiff: instant differential backups.
- XSITools: all terrain differential deduplication engine.
- XSIDiff: zero aware over IP copy.
You can find the man page at: http://33hops.com/xsibackup-help-man-page.html
And a lot of useful articles at: http://33hops.com/blog-main.asp?lang=EN
