Backup Cow is the best software to backup multiple computers.You just need to run Backup Cow application on each netwotked computer, which you wish to backup from or backup to, then you can backup and sync files between computers. So you need run Backup Cow on at least two networked computers in order to implement network backup.
As for building the private cloud storage, it is the same way. You just need to run Backup Cow application on each netwotked computer that will be a cloud node or cloud user. Any network users can be a cloud storage contributor or consumer or both! Any cloud user can back up their files on to the private cloud.
Please read the Online Manual on our site http://backupcow.com/support.asp, which can help you install and start using this software. You may always contact us by email firstname.lastname@example.org or click Contact Us.