I have a low power consumption/low performance (Brasswell=Atom) 24/7 MongoDB database server on one hand, and on the other a high power consumption/high performance (Xeon) backup server which is usually only powered on once a day for about 10 minutes. It's not backing up the MongoDB data because no steps have been taken for this to be done.
Does it make sense to create a replica set on the Braswell, add an arbiter on the Brasswell, and then create a priority=0 replica member on the Xeon, so that it backs up the Brasswell whenever it comes online? Since it's a priority=0, would it even be possible to ditch the arbiter?
If it would work, would I have failing inserts on the primary for a short moment when the Xeon goes offline?