I am thinking of two different projects:
1) some application servers that are so much mission critical that would be so hard to reinstall and do all the customizations due to how many modules they have on them. so need to have some type of DR just so that we have multiple layers of protection. this would be hardware metal restore, and the image has to be an online sync (15 minute interval or something)
2) we have multiple servers that we are looking to move from one location to another (two different cities with 20mbs pipe via VPN) need to find a way to migrate those servers (old hardware) to the new servers in the other center. the question is, I would like to look at some type of software that can handle it (double take can do the job, though it is a little expensive) so i was hoping they have some other competitors. what do you think?