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We know there are two ways to create a mongoDB cluster :-

1.) Sharding

2.) Replication

My question is can we combine both sharding & replication like we have in elastic cluster?

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In MongoDB 3.6 and newer, shards must be deployed as a replica set. Replication provides data redundancy and high availability for each shard; sharding enables a collection to be distributed across multiple shards.

For more information see Sharded Cluster Components and the Deploy a Sharded Cluster tutorial in the MongoDB documentation.

  • Thanks a lot @Stennie for your comment. I will look into this. SO, basically if i will deploy a shard with mongoDB version 3.6 or newer then it will be the same. – abhi Jan 13 at 17:37
  • @abhi In versions of MongoDB earlier than 3.6 it was optional (but recommended) for shards to be replica sets. In MongoDB 3.6+ replication this changed to a requirement. – Stennie Jan 13 at 18:17
  • Thanks for the explanation. Do you mind connecting on linkedin incase if i will be having more question. – abhi Jan 13 at 18:30
  • @abhi If you have more questions it would be good to ask them on public forums like DBA StackExchange so others can also learn and participate in the conversation. – Stennie Jan 13 at 21:40

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