I've looked at Remote Journalling and have a client that just needs very basic data mirroring between two like-configured systems. They don't need programs or users or other things; those can be managed/transferred on-demand.
What they want is a simple: "Keep the data on machine B in sync with machine A" where machine "B" is just sitting there waiting for the day when machine A fails or is destroyed or the power in that building goes out, etc.
I thought IBM released this back when the OS was still called OS/400? I guess not.
So if you don't want to spend the money on, or don't have the budget for one of the iTera, Vision, Mimix products, what do people use for backup/recover besides tape?