[Users] Engine location best practice?

[Lance A. Brown]

I'm setting up an oVirt environment at $WORK and trying to decide where
to locate the ovirt-engine.  Is it better practice to put it on a
separate computer from the nodes?  If I co-locate it on a node machine,
then I have to worry about it being unavailable if that node is down.
How much of an issue is that likely to be?

Thanks,
  --[Lance]