Are there any ramifications to running the same installation on two servers simultaneously?  We have our Linux installation on a share and setup with a boot script on server1.  But when server1 goes down, we want to be able to switch to server2 (run the same installation).  The concern is that when server1 comes back online and the boot script executes, we will have 2 servers running off the same installation.  We should be able to identify server1 as being back online and stop server2 relatively quickly, but there may be a few users who jump on server1 before we have a chance to stop server2.  Is there potential for resource conflicts?  If so, would we just see errors, or would bad things happen?