FAQ: Can I use another storage backend than HBase?
FAQ: Can I use another storage backend than HBase?

Change-Id: I441daf8b910860187f39769516ef6e39eb0df62b

manolama/opentsdb.net,OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net,manolama/opentsdb.net,OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net,manolama/opentsdb.net,OpenTSDB/opentsdb.net,geoffreyanderson/opentsdb.net