Rebalancing fast with mongodb I am implementing a sharding with MongoDB and have recently added another node, but the rebalancing of data is very slow. Servers have 64 Mac OS with RAM.

I need help on how I can run the mongod process faster.
Yes, mongod &lt;3.4 have slow balancing speed because of "internal throttling", but if you do your balancing work with script (using MoveChunk-command) it's much faster.

However, if you upgrade your system to 3.4 series, balancing will be about 10x faster and even faster if you have multiple shards (>=4)