says that one can copy the contents of the data directory and use it
on another machine. The example states the other instance is not in
the server list; what would happen if one did copy it to an offline
member of the quorum that then starts up?
Do the docs imply that one can copy the data directory as-is as a
backup method? Is it "restorable" to any crashed/hosed server, or only
the one with the same server id?
What is a valid backup method for zk data?