How can I create snapshots of system (similar to what VM have) of a centOS 6 to a network location? That is I need to know what software/package should I use and maybe some ways to work with it.
Are we talking about Physical or Virtual machine ? Physical i guess...
If Physical, of course you cannot create snapshot similar to VMWare ! This question doesn't make much sense.
However, an alternative could be to create an image of the entire disk of the machine and store the image in a safe location, to recover the machine later.
Something like CloneZilla will do this job. It allows you to store direclty the image on a network location.