In a situation where you are running: VMware Infrastructure 4.x with multiple hosts Over 150 VMs with a wide variety of operating systems (Linux in a half dozen distros, Solaris, every MS version, etc.) in multiple languages with almost every mix of installed software (luckily, no Exchange mail servers) Using an EMC fiber channel SAN The VWs that need need to be backed up use about 2 terabytes of data (total) The goal is to keep backups for about 3-months At this rough scale, what backup solutions have worked well for you? And, as an add-on question, did any of them have de-duplication that you thought was effective and useful?