Hello again xu, Apologies over a bad mistake in the earlier post, I believe I had it wrong. The replication is done as you had explained, so do not get confused by my saying that the NN manages it after the writes (I've said this around as well, learnt the right thing thanks to Matthew Foley today!).
i.e. Please disregard this: > The writing process originally only writes only a single copy. The > replication is done by the NN later-on (as part of DN commands sent > via heartbeats). -- Harsh J